Datasheet

ManualsBrandsST ManualsDriversMotor Driver IC, SO-20, 600mA

L293D

L293DD

PUSH-PULL FOUR CHANNEL DRIVER WITH DIODES

600mA OUTPUT CURRENT CAPABILITY

PER CHANNEL

1.2A PEAK OUTPUT CURRENT (non repeti-

tive) PER CHANNEL

ENABLE FACILITY

OVERTEMPERATUREPROTECTION

LOGICAL ”0” INPUT VOLTAGE UP TO 1.5 V

(HIGH NOISE IMMUNITY)

INTERNAL CLAMP DIODES

DESCRIPTION

The Device is a monolithic integrated high volt-

age, high current four channel driver designed to

accept standard DTL or TTL logic levels and drive

inductive loads (such as relays solenoides, DC

and stepping motors) and switching power tran-

sistors.

To simplify use as two bridges each pair of chan-

nels is equipped with an enable input. A separate

supply input is provided for the logic, allowing op-

eration at a lower voltage and internal clamp di-

odes are included.

This device is suitable for use in switching appli-

cations at frequenciesup to 5 kHz.

The L293D is assembled in a 16 lead plastic

packaage which has 4 center pins connected to-

gether and used for heatsinking

The L293DD is assembled in a 20 lead surface

mount which has 8 center pins connected to-

gether and used for heatsinking.

June 1996

BLOCK DIAGRAM

SO(12+4+4) Powerdip (12+2+2)

ORDERING NUMBERS:

L293DD L293D

1/7

Summary of content (120 pages)

PAGE 1
L293D L293DD PUSH-PULL FOUR CHANNEL DRIVER WITH DIODES 600mA OUTPUT CURRENT CAPABILITY PER CHANNEL 1.2A PEAK OUTPUT CURRENT (non repetitive) PER CHANNEL ENABLE FACILITY OVERTEMPERATURE PROTECTION LOGICAL ”0” INPUT VOLTAGE UP TO 1.
PAGE 2
L293D - L293DD ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VS Supply Voltage 36 V V SS Logic Supply Voltage 36 V Input Voltage 7 V Enable Voltage 7 V Vi V en Io P tot Tstg, Tj Peak Output Current (100 µs non repetitive) 1.2 A 4 W – 40 to 150 °C Total Power Dissipation at Tpins = 90 °C Storage and Junction Temperature PIN CONNECTIONS (Top view) Powerdip(12+2+2) SO(12+4+4) THERMAL DATA Symbol DIP SO Unit Rth j-pins Thermal Resistance Junction-pins Decription max.
PAGE 3
L293D - L293DD ELECTRICAL CHARACTERISTICS (for each channel, VS = 24 V, VSS = 5 V, Tamb = 25 °C, unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit VS Supply Voltage (pin 10) VSS 36 V V SS Logic Supply Voltage (pin 20) 4.
PAGE 4
L293D - L293DD Figure 1: Switching Times TRUTH TABLE (one channel) Inpu t Enable (*) Output H L H L H H L L H L Z Z Z = High output impedance (*) Relative to the considered channel Figure 2: Junction to ambient thermal resistance vs.
PAGE 5
L293D - L293DD POWERDIP16 PACKAGE MECHANICAL DATA mm DIM. MIN. a1 0.51 B 0.85 b b1 TYP. inch MAX. MIN. TYP. MAX. 0.020 1.40 0.033 0.50 0.38 0.020 0.50 D 0.055 0.015 0.020 20.0 0.787 E 8.80 0.346 e 2.54 0.100 e3 17.78 0.700 F 7.10 0.280 I 5.10 0.201 L Z 3.30 0.130 1.27 0.
PAGE 6
L293D - L293DD SO20 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. A a1 MIN. TYP. 2.65 0.1 MAX. 0.104 0.2 a2 0.004 0.008 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.013 C 0.5 0.020 c1 45 1.772 D 1 E 10 12.6 0.039 10.65 0.394 1.27 0.050 e3 11.43 0.450 F 1 7.4 0.496 0.419 e 0.039 0.291 G 8.8 9.15 0.346 0.360 L 0.5 1.27 0.020 0.050 M S 6/7 inch MAX. 0.75 0.030 8° (max.
PAGE 7
L293D - L293DD Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned in this publication are subject to change without notice.
PAGE 8
L293B L293E PUSH-PULL FOUR CHANNEL DRIVERS .. .. .. OUTPUT CURRENT 1A PER CHANNEL PEAK OUTPUT CURRENT 2A PER CHANNEL (non repetitive) INHIBIT FACILITY HIGH NOISE IMMUNITY SEPARATE LOGIC SUPPLY OVERTEMPERATURE PROTECTION DESCRIPTION The L293B and L293E are quad push-pull drivers capableof delivering output currents to 1A per channel. Each channel is controlledby a TTL-compatible logic input and each pair of drivers (a full bridge) is equipped with an inhibit input which turns off all four transistors.
PAGE 9
L293B - L293E BLOCK DIAGRAMS DIP16 - L293B POWERDIP (16+2+2) - L293E 2/12
PAGE 10
L293B - L293E SCHEMATIC DIAGRAM (*) In the L293 these points are not externally available. They are internally connected to the ground (substrate). O Pins of L293 () Pins of L293E.
PAGE 11
L293B - L293E ABSOLUTE MAXIMUM RATINGS Symbol Vs Vss Vi Vinh Iout Ptot Tstg, Tj Parameter Supply Voltage Logic Supply Voltage Input Voltage Inhibit Voltage Peak Output Current (non repetitive t = 5ms) o Total Power Dissipation at Tground-pins = 80 C Storage and Junction Temperature Value 36 36 7 7 2 5 –40 to +150 Unit V V V V A W o C THERMAL DATA Symbol Rth j-case R th j-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient Value 14 80 Max. Max.
PAGE 12
L293B - L293E Figure 1 : Switching Timers Figure 2 : Saturation voltage versus Output Current Figure 3 : Source Saturation Voltage versus Ambient Temperature Figure 4 : Sink Saturation Voltage versus Ambient Temperature Figure 5 : Quiescent Logic Supply Current versus Logic Supply Voltage 5/12
PAGE 13
L293B - L293E Figure 6 : Output Voltage versus Input Voltage Figure 7 : Output Voltage versus Inhibit Voltage APPLICATION INFORMATION Figure 8 : DC Motor Controls (with connection to ground and to the supply voltage) Vinh A M1 B H H Fast Motor Stop H Run C= H;D=L Turn Right H L Run L Fast Motor Stop C = L; D =H Turn Left L X Free Running Motor Stop X Free Running Motor Stop C=D Fast Motor Stop C = X; D =X Free Running Motor Stop L = Low H = High M2 Figure 9 : Bidirectional D
PAGE 14
L293B - L293E Figure 10 :Bipolar Stepping Motor Control 7/12
PAGE 15
L293B - L293E Figure 11 :Stepping Motor Driver with Phase Current Control and Short Circuit Protection 8/12
PAGE 16
L293B - L293E MOUNTING INSTRUCTIONS The Rth j-amb of the L293B and the L293E can be reduced by soldering the GND pins to a suitable copper area of the printed circuit board as shown in figure 12 or to an external heatsink (figure 13). During soldering the pins temperature must not exceed 260oC and the soldering time must not be longer than 12 seconds. The external heatsink or printed circuit copper area must be connected to electrical ground. Figure 12 :Example of P.C.
PAGE 17
L293B - L293E DIP16 PACKAGE MECHANICAL DATA Millimeters Dimensions Min. 0.51 B 0.77 Max. Min. Typ. Max. 0.020 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 F 7.1 0.280 i 5.1 0.201 L 3.3 0.130 0.050 I 1.27 b1 L a1 Z b B DIP16PW.TBL a1 Typ. Inches e E Z e3 9 1 8 F 16 10/12 PMDIP16W.
PAGE 18
L293B - L293E POWERDIP (16+2+2) PACKAGE MECHANICAL DATA Millimeters Min. a1 0.51 B 0.85 b Inches Typ. Max. Min. Typ. 0.020 1.4 0.033 0.055 0.5 b1 Max. 0.020 0.38 0.5 D 0.015 0.020 24.8 0.976 E 8.8 0.346 e 2.54 0.100 e3 22.86 0.900 F 7.1 0.280 i 5.1 0.201 L 3.3 0.130 0.050 I 1.27 b1 L a1 Z B b e E Z e3 DIP20PW.
PAGE 19
L293B - L293E Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice.
PAGE 20
L295 DUAL SWITCH-MODE SOLENOID DRIVER PRELIMINARY DATA HIGH CURRENT CAPABILITY (up to 2.5A per channel) HIGH VOLTAGE OPERATION (up to 46V for power stage) HIGHEFFICIENCY SWITCHMODE OPERATION REGULATED OUTPUT CURRENT (adjustable) FEW EXTERNAL COMPONENTS SEPARATE LOGIC SUPPLY THERMAL PROTECTION DESCRIPTION The L295 is a monolithic integrated circuit in a 15 lead Multiwatt  package; it incorporates all the functions for direct interfacing between digital circuitry and inductive loads.
PAGE 21
L295 CONNECTION DIAGRAM (top view) BLOCK DIAGRAM THERMAL DATA Symbol 2/8 Value Unit Rth-j-case Thermal resistance junction-case Parameter max 3 °C/W R th-j-amb Thermal resistance junction-ambient max 35 °C/W
PAGE 22
L295 ELECTRICAL CHARACTERISTICS (Refer to the application circuit, Vss = 5V, Vs = 36V; Tj = 25°C; L = Low; H = High; unless otherwise specified) Symbol Parameter Vs Supply Voltage Vss Logic Supply Voltage Test conditions Min. Typ. Max. Unit 12 46 V 4.
PAGE 23
L295 APPLICATION CIRCUIT D2, D4 = 2A High speed diodes D1, D3 = 1A High speed diodes ) trr ≤ 200 ns R1 = R2 = 2Ω L1 = L2 = 5 mH FUNCTIONAL DESCRIPTION The L295 incorporates two indipenden t driver channals with separate inputs and outputs, each capable of driving an inductive load (see block diagram). The device is controlled by three micriprocessor compatible digital inputs and two analog inputs. These inputs are: chip enable (digital input, active low), enables both channels when in the low state.
PAGE 24
L295 If the oscillator pin (9) is connected to ground the load current falls to zero as shown in fig. 1. At this time t 2 the channel 1 is disabled, by taking the inputs Vin1 low and/or EN high, and the output transistor Q2 is turned off. The load current flows through D2 and D1 according to the law: I = ( VB R1 + IT2 ) e − R1 t L1 − VB R1 where VB = VS + VD1 + VD2 IT2 = current value at the time t2. Fig. 2 in shows the current waveform obtained with an RC network connected between pin 9 and ground.
PAGE 25
L295 SIGNAL WAVEFORMS (continued) Figure 3. With Vref changed by hardware. 6/8 Figure 4. Switching frequency vs. values of R and C.
PAGE 26
L295 MULTIWATT15 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 D E 0.063 1 0.49 0.039 0.55 0.019 0.022 F 0.66 0.75 0.026 G 1.02 1.27 1.52 0.040 0.050 0.030 0.060 G1 17.53 17.78 18.03 0.690 0.700 0.710 H1 19.6 0.772 H2 20.2 0.795 L 21.9 22.2 22.5 0.862 0.874 0.886 L1 21.7 22.1 22.5 0.854 0.870 0.886 L2 17.65 18.1 0.695 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.
PAGE 27
L295 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice.
PAGE 28
L297 L297D STEPPER MOTOR CONTROLLERS NORMAL/WAWE DRIVE HALF/FULL STEP MODES CLOCKWISE/ANTICLOCKWISE DIRECTION SWITCHMODE LOAD CURRENT REGULATION PROGRAMMABLE LOAD CURRENT FEW EXTERNAL COMPONENTS RESET INPUT & HOME OUTPUT ENABLE INPUT DESCRIPTION The L297/A/D Stepper Motor Controller IC generates four phase drive signals for two phase bipolar and four phase unipolar step motors in microcomputer-controlled applications.
PAGE 29
L297-L297D PIN CONNECTION (Top view) L297 L297D BLOCK DIAGRAM (L297/L297D) 2/11
PAGE 30
L297-L297D PIN FUNCTIONS - L297/L297D N° NAME FUNCTION 1 SYNC Output of the on-chip chopper oscillator. The SYNC connections The SYNC connections of all L297s to be synchronized are connected together and the oscillator components are omitted on all but one. If an external clock source is used it is injected at this terminal. 2 GND Ground connection. 3 HOME 4 A 5 INH1 6 B Motor phase B drive signal for power stage. 7 C Motor phase C drive signal for power stage.
PAGE 31
L297-L297D PIN FUNCTIONS - L297/L297D (continued) N° NAME FUNCTION 19 HALF/FULL Half/full step select input. When high selects half step operation, when low selects full step operation. One-phase-on full step mode is obtained by selecting FULL when the L297’s translator is at an even-numbered state. Two-phase-on full step mode is set by selecting FULL when the translator is at an odd numbered position. (The home position is designate state 1). 20 RESET Reset input.
PAGE 32
L297-L297D MOTOR DRIVING PHASE SEQUENCES The L297’s translator generates phase sequences for normal drive, wave drive and half step modes. The state sequences and output waveforms for these three modes are shown below. In all cases the translator advances on the low to high transistion of CLOCK. Clockwise rotation is indicate; for anticlockwise rotation the sequences are simply reversed RESET restores the translator to state 1, where ABCD = 0101.
PAGE 33
L297-L297D MOTOR DRIVING PHASE SEQUENCES (continued) WAVE DRIVE MODE Wave drive mode (also called ”one-phase-on” drive) is selected by a low level on the HALF/FULL input when the translator is at an even numbered state (2, 4, 6 or 8).
PAGE 34
L297-L297D ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter Test conditions Min. Typ Max. Unit Ileak Leakage current (pin 3) VCE = 7 V 1 µA Vsat Saturation voltage (pin 3) I = 5 mA 0.4 V Voff Comparators offset voltage (pins 13, 14, 15) Vref = 1 V 5 mV -100 10 µA 0 3 V Io Comparator bias current (pins 13, 14, 15) Vref Input reference voltage (pin 15) tCLK Clock time 0.
PAGE 35
L297-L297D APPLICATION INFORMATION TWO PHASE BIPOLAR STEPPER MOTOR CONTROL CIRCUIT This circuit drives bipolar stepper motors with winding currents up to 2A. The diodes are fast 2A types. Figure 2.
PAGE 36
L297-L297D DIP20 PACKAGE MECHANICAL DATA mm DIM. MIN. a1 0.254 B 1.39 TYP. inch MAX. MIN. TYP. MAX. 0.010 1.65 0.055 0.065 b 0.45 0.018 b1 0.25 0.010 D 25.4 1.000 E 8.5 0.335 e 2.54 0.100 e3 22.86 0.900 F 7.1 0.280 I 3.93 0.155 L Z 3.3 0.130 1.34 0.
PAGE 37
L297-L297D SO20 PACKAGE MECHANICAL DATA mm inch DIM. MIN. TYP. A a1 MAX. TYP. 2.65 0.1 MAX. 0.104 0.3 a2 0.004 0.012 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.013 C 0.5 0.020 c1 45 (typ.) D 12.6 13.0 0.496 0.512 E 10 10.65 0.394 0.419 e 1.27 0.050 e3 11.43 0.450 F 7.4 7.6 0.291 0.299 L 0.5 1.27 0.020 0.050 M S 10/11 MIN. 0.75 0.030 8 (max.
PAGE 38
L297-L297D Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned in this publication are subject to change without notice.
PAGE 39
L298 DUAL FULL-BRIDGE DRIVER .. .. . OPERATING SUPPLY VOLTAGE UP TO 46 V TOTAL DC CURRENT UP TO 4 A LOW SATURATION VOLTAGE OVERTEMPERATURE PROTECTION LOGICAL ”0” INPUT VOLTAGE UP TO 1.5 V (HIGH NOISE IMMUNITY) DESCRIPTION The L298 is an integrated monolithic circuit in a 15lead Multiwatt and PowerSO20 packages. It is a high voltage, high current dual full-bridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors.
PAGE 40
L298 ABSOLUTE MAXIMUM RATINGS Symb ol Value Unit VS Power Supply 50 V VSS Logic Supply Voltage 7 V –0.3 to 7 V 3 2.5 2 A A A VI,Ven IO Vsens Ptot Tstg, Tj Parameter Input and Enable Voltage Peak Output Current (each Channel) – Non Repetitive (t = 100µs) –Repetitive (80% on –20% off; ton = 10ms) –DC Operation Sensing Voltage –1 to 2.
PAGE 41
L298 PIN FUNCTIONS (refer to the block diagram) MW .15 Po werSO Name 1;15 2;19 Sense A; Sense B Between this pin and ground is connected the sense resistor to control the current of the load. Fu nctio n 2;3 4;5 Out 1; Out 2 Outputs of the Bridge A; the current that flows through the load connected between these two pins is monitored at pin 1. 4 6 VS Supply Voltage for the Power Output Stages. A non-inductive 100nF capacitor must be connected between this pin and ground.
PAGE 42
L298 ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter T est Con ditio ns Min. T yp. Max. Unit T1 (Vi) Source Current Turn-off Delay 0.5 Vi to 0.9 IL (2); (4) 1.5 µs T2 (Vi) Source Current Fall Time 0.9 IL to 0.1 IL (2); (4) 0.2 µs T3 (Vi) Source Current Turn-on Delay 0.5 Vi to 0.1 IL (2); (4) 2 µs T4 (Vi) Source Current Rise Time 0.1 IL to 0.9 IL (2); (4) 0.7 µs T5 (Vi) Sink Current Turn-off Delay 0.5 Vi to 0.9 IL (3); (4) 0.
PAGE 43
L298 Figure 3 : Source Current Delay Times vs. Input or Enable Switching. Figure 4 : Switching Times Test Circuits.
PAGE 44
L298 Figure 5 : Sink Current Delay Times vs. Input 0 V Enable Switching. Figure 6 : Bidirectional DC Motor Control.
PAGE 45
L298 Figure 7 : For higher currents, outputs can be paralleled. Take care to parallel channel 1 with channel 4 and channel 2 with channel 3. APPLICATION INFORMATION (Refer to the block diagram) Each input must be connected to the source of the 1.1. POWER OUTPUT STAGE driving signals by means of a very short path. TheL298integratestwo power outputstages(A ; B).
PAGE 46
L298 This solution can drive until 3 Amps In DC operation and until 3.5 Amps of a repetitive peak current. On Fig 8it is shown the driving of a two phase bipolar stepper motor ; the needed signals to drive the inputs of the L298 are generated, in this example, from the IC L297. Fig 9 shows an example of P.C.B. designed for the application of Fig 8. Fig 10 shows a second two phase bipolar stepper motor control circuit where the current is controlled by the I.C. L6506.
PAGE 47
L298 Figure 9 : Suggested Printed Circuit Board Layout for the Circuit of fig. 8 (1:1 scale). Figure 10 : Two Phase Bipolar Stepper Motor Control Circuit by Using the Current Controller L6506.
PAGE 48
L298 MULTIWATT15 (VERTICAL) PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 D 0.063 1 0.039 E 0.49 0.55 0.019 0.022 F 0.66 0.75 0.026 0.030 G 1.14 1.27 1.4 0.045 0.050 0.055 G1 17.57 17.78 17.91 0.692 0.700 0.705 H1 19.6 0.772 H2 L 10/12 inch MAX. 20.2 0.795 22.1 22.6 0.870 0.890 L1 22 22.5 0.866 0.886 L2 17.65 18.1 0.695 0.713 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.
PAGE 49
L298 PowerSO20 PACKAGE MECHANICAL DATA mm DIM. MIN. inch TYP. MAX. A MIN. TYP. MAX. 3.60 a1 0.10 0.1417 0.30 a2 0.0039 0.0118 3.30 0.1299 a3 0 0.10 0 0.0039 b 0.40 0.53 0.0157 0.0209 c 0.23 0.32 0.009 0.0126 D (1) 15.80 16.00 0.6220 0.6299 E 13.90 14.50 0.5472 0.570 e 1.27 0.050 e3 11.43 0.450 E1 (1) 10.90 11.10 E2 0.4291 0.437 2.90 G 0 0.1141 0.10 h 0 0.0039 0.0314 0.0433 1.10 L 0.80 1.10 N 10° (max.) S 8° (max.) T 10.0 0.
PAGE 50
L298 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice.
PAGE 51
L6201 - L6201P L6202 - L6203 DMOS FULL BRIDGE DRIVER SUPPLY VOLTAGE UP TO 48V 5A MAX PEAK CURRENT (2A max. for L6201) TOTAL RMS CURRENT UP TO L6201: 1A; L6202: 1.5A; L6203/L6201P:4A RDS (ON) 0.3 Ω (typical value at 25 °C) CROSS CONDUCTION PROTECTION TTL COMPATIBLE DRIVE OPERATING FREQUENCY UP TO 100 KHz THERMAL SHUTDOWN INTERNAL LOGIC SUPPLY HIGH EFFICIENCY DESCRIPTION The I.C.
PAGE 52
L6201 - L6201P - L6202 - L6203 PIN CONNECTIONS (Top view) POWERDIP SO20 GND 1 20 GND N.C. 2 19 N.C. N.C. 3 18 N.C. OUT2 4 17 ENABLE VS 5 16 SENSE OUT1 6 15 Vref BOOT1 7 14 BOOT2 IN1 8 13 IN2 N.C. 9 12 N.C.
PAGE 53
L6201 - L6201P - L6202 - L6203 PINS FUNCTIONS Device Name Function 10 SENSE A resistor Rsen se connected to this pin provides feedback for motor current control. 11 ENAB LE When a logic high is present on this pin the DMOS POWER transistors are enabled to be selectively driven by IN1 and IN2. 3 N.C.
PAGE 54
L6201 - L6201P - L6202 - L6203 THERMAL DATA Symbol Rth j-pins Rth j-case Rth j-amb Value Parameter Thermal Resistance Junction-pins Thermal Resistance Junction Case Thermal Resistance Junction-ambient L6201 L6201P L6202 L6203 15 – 85 – – 13 (*) 12 – 60 – 3 35 max max. max. Unit °C/W (*) Mounted on aluminium substrate. ELECTRICAL CHARACTERISTICS (Refer to the Test Circuits; Tj = 25°C, VS = 42V, Vsens = 0, unless otherwise specified).
PAGE 55
L6201 - L6201P - L6202 - L6203 ELECTRICAL CHARACTERISTICS (Continued) LOGIC CONTROL TO POWER DRIVE TIMING Symbol Parameter Test Conditions Min. Typ. Max. Unit t1 (Vi) Source Current Turn-off Delay Fig. 12 300 ns t2 (Vi) Source Current Fall Time Fig. 12 200 ns t3 (Vi) Source Current Turn-on Delay Fig. 12 400 ns t4 (Vi) Source Current Rise Time Fig. 12 200 ns t5 (Vi) Sink Current Turn-off Delay Fig. 13 300 ns t6 (Vi) Sink Current Fall Time Fig.
PAGE 56
L6201 - L6201P - L6202 - L6203 Figure 5: Normalized RDS (ON)at 25°C vs.
PAGE 57
L6201 - L6201P - L6202 - L6203 Figure 8a: Two Phase Chopping Figure 8b: One Phase Chopping Figure 8c: Enable Chopping 7/20
PAGE 58
L6201 - L6201P - L6202 - L6203 TEST CIRCUITS Figure 9: Saturation Voltage Figure 10: Quiescent Current Figure 11: Leakage Current 8/20
PAGE 59
L6201 - L6201P - L6202 - L6203 Figure 12: Source Current Delay Times vs. Input Chopper 42V for L6201P/02/03 Figure 13: Sink Current Delay Times vs.
PAGE 60
L6201 - L6201P - L6202 - L6203 CIRCUIT DESCRIPTION The L6201/1P/2/3 is a monolithic full bridge switching motor driver realized in the new Multipower-BCD technology which allows the integration of multiple, isolated DMOS power transistors plus mixed CMOS/bipolar control circuits. In this way it has been possible to make all the control inputs TTL, CMOS and µC compatible and eliminate the necessity of external MOS drive components. The Logic Drive is shown in table 1.
PAGE 61
L6201 - L6201P - L6202 - L6203 Boostrap Capacitors To ensure that the POWER DMOS transistors are driven correctly gate to source voltage of typ. 10 V must be guaranteed for all of the N-channel DMOS transistors. This is easy to be provided for the lower POWER DMOS transistors as their sources are refered to ground but a gate voltage greater than the supply voltage is necessary to drive the upper transistors.
PAGE 62
L6201 - L6201P - L6202 - L6203 Quiescent Energy The last contribution to the energy dissipation is due to the quiescent supply current and is given by: EQUIESCENT = IQUIESCENT ⋅ Vs ⋅ T Total Energy Per Cycle ETOT = EOFF/ ON + ELD + ECOM + + EON/OFF + EQUIESCENT The Total Power Dissipation PDIS is simply : PDIS = ETOT/T T r = Rise time T LD = Load drive time T f = Fall time T d = Dead time T = Period T = Tr + TLD + Tf + Td DC Motor Speed Control Since the I.C.
PAGE 63
L6201 - L6201P - L6202 - L6203 BIPOLAR STEPPER MOTORS APPLICATIONS Bipolar stepper motors can be driven with one L6506 or L297, two full bridge BCD drivers and very few external components. Together these three chips form a complete microprocessor-tostepper motor interface is realized. As shown in Fig. 18 and Fig. 19, the controller connect directly to the two bridge BCD drivers. External component are minimalized: an R.C.
PAGE 64
L6201 - L6201P - L6202 - L6203 It could be requested to drive a motor at VS lower than the minimum recommended one of 12V (See Electrical Characteristics); in this case, by accepting a possible small increas in the RDS (ON) resistance of the power output transistors at the lowest Supply Voltage value, may be a good solution the one shown in Fig. 20. Figure 21: Typical RTh J-amb vs.
PAGE 65
L6201 - L6201P - L6202 - L6203 Figure 24: Typical Transient Thermal Resistance for Single Pulses (L6202) Figure 25: Typical RTh J-amb of Multiwatt Package vs.
PAGE 66
L6201 - L6201P - L6202 - L6203 POWERDIP18 PACKAGE MECHANICAL DATA mm DIM. MIN. a1 0.51 B 0.85 b b1 TYP. MAX. MIN. TYP. MAX. 0.020 1.40 0.033 0.50 0.38 0.055 0.020 0.50 D 0.015 0.020 24.80 0.976 E 8.80 0.346 e 2.54 0.100 e3 20.32 0.800 F 7.10 0.280 I 5.10 0.201 L Z 16/20 inch 3.30 0.130 2.54 0.
PAGE 67
L6201 - L6201P - L6202 - L6203 SO20 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 2.65 0.1 0.104 0.3 a2 MAX. 0.004 0.012 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.013 C 0.5 0.020 c1 45 (typ.) D 12.6 13.0 0.496 0.512 E 10 10.65 0.394 0.419 e 1.27 0.050 e3 11.43 0.450 F 7.4 7.6 0.291 0.299 L 0.5 1.27 0.020 0.050 M S 0.75 0.030 8 (max.
PAGE 68
L6201 - L6201P - L6202 - L6203 PowerSO20 PACKAGE MECHANICAL DATA mm DIM. MIN. inch TYP. MAX. A MIN. TYP. MAX. 3.60 a1 0.10 0.1417 0.30 a2 0.0039 0.0118 3.30 0.1299 a3 0 0.10 0 0.0039 b 0.40 0.53 0.0157 0.0209 c 0.23 0.32 0.009 0.0126 0.6299 D (1) 15.80 16.00 0.6220 E 13.90 14.50 0.5472 0.570 e 1.27 0.050 e3 11.43 0.450 E1 (1) 10.90 11.10 E2 0.4291 0.437 2.90 G 0 0.1141 0.10 h 0 0.0039 0.0314 0.0433 1.10 L 0.80 1.10 N 10° (max.
PAGE 69
L6201 - L6201P - L6202 - L6203 MULTIWATT11 PACKAGE MECHANICAL DATA DIM. mm MIN. inch A MAX. 5 B C 2.65 1.6 D TYP. MIN. TYP. MAX. 0.197 0.104 0.063 1 0.039 E F G 0.49 0.88 1.57 1.7 0.55 0.95 1.83 0.019 0.035 0.062 17 17.13 0.664 0.772 G1 H1 H2 L 16.87 19.6 21.5 20.2 22.3 0.846 0.795 0.878 L1 L2 21.4 17.4 22.2 18.1 0.843 0.685 0.874 0.713 L3 L4 17.25 10.3 17.75 10.9 0.679 0.406 L7 2.65 2.9 0.104 M M1 4.1 4.88 4.5 5.3 0.161 0.192 S 1.9 2.6 0.075 0.
PAGE 70
L6201 - L6201P - L6202 - L6203 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned in this publication are subject to change without notice.
PAGE 71
L6219 STEPPER MOTOR DRIVER ADVANCE DATA ABLE TO DRIVE BOTH WINDINGS OF BIPOLAR STEPPER MOTOR OUTPUT CURRENT UP TO 750mA EACH WINDING WIDE VOLTAGE RANGE 10V TO 46V HALF-STEP, FULL-STEP AND MICROSTEPPING MODE BUILT-IN PROTECTION DIODES INTERNAL PWM CURRENT CONTROL LOW OUTPUT SATURATION VOLTAGE DESIGNED FOR UNSTABILIZED MOTOR SUPPLY VOLTAGE INTERNAL THERMAL SHUTDOWN DESCRIPTION The L6219 is a bipolar monolithic integrated circuits intended to control and drive both winding of a bipolar stepper motor or bidire
PAGE 72
L6219 PIN CONNECTIONS (Top view) Powerdip and SO PLCC44 PIN FUNCTIONS PLCC (*) 1;2 4;42 PDIP & SO 1;2 3;23 5;41 4;22 8;38 5;21 6;7;17 29;39; 40 16;37 19;30 6;19 7;18 20;27 10;16 21;26 11;15 22;25 12;14 24 44 13 24 8;20 9;17 Name Function OUTPUT A See pins 5;21 SENSE RESISTOR Connection to Lower Emitters of Output Stage for Insertion of Current Sense Resistor COMPARATOR Input connected to the comparators.
PAGE 73
L6219 ABSOLUTE MAXIMUM RATINGS Symbol Parameter VS Supply Voltage Io Output Current (peak) Io Output Current (continuous) VSS Logic Supply Voltage VIN Logic Input Voltage Range Value Unit 50 V ±1 A ±0.75 A 7 V -0.3 to +7 V Vsense Sense Output Voltage 1.
PAGE 74
L6219 ELECTRICAL CHARACTERISTICS (Continued) Symbol Parameter Test Condition Min. Typ. Max. Unit - 170 - °C PROTECTION TJ Thermal Shutdown Temperature Figure 1 FUNCTIONAL DESCRIPTION The circuit is intended to drive both windings of a bipolar stepper motor. The peak current control is generated through switch mode regulation. There is a choice of three different current levels with the two logic inputs I01 - I11 for winding 1 and I02 - I12 for winding 2.
PAGE 75
L6219 Figure 2: Principle Operating Sequence Single-pulse Generator The pulse generator is a monostable triggered on the positive going edge of the comparator output. The monostable output is high during the pulse time, toff , which is determined by the time components Rt and Ct. toff = 1.1 • RtCt The single pulse switches off the power feed to the motor winding, causing the winding current to decrease during toff. If a new trigger signal should occur during toff, it is ignored.
PAGE 76
L6219 VS, VSS, VRef The circuit will stand any order of turn-on or turnoff the supply voltages VS and VSS. Normal dV/dt values are then assumed. Preferably, VRef should be tracking VSS during power-on and power-off if VS is established. APPLICATION INFORMATIONS (Note 1) Some stepper motors are not designed for continuous operation at maximum current. As the circuit drives a constant current through the motor, its temperature might increase exceedingly both at low and high speed operation.
PAGE 77
L6219 DIP24 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. a1 0.63 0.025 b 0.45 0.018 b1 0.23 b2 0.31 1.27 D E 0.009 0.012 0.050 32.2 15.2 16.68 1.268 0.598 0.657 e 2.54 0.100 e3 27.94 1.100 F MAX. 14.1 0.555 I 4.445 0.175 L 3.3 0.
PAGE 78
L6219 PLCC44 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 17.4 17.65 0.685 0.695 B 16.51 16.65 0.650 0.656 C 3.65 3.7 0.144 0.146 D 4.2 4.57 0.165 0.180 d1 2.59 2.74 0.102 0.108 d2 E 0.68 14.99 0.027 16 0.590 0.630 e 1.27 0.050 e3 12.7 0.500 F 0.46 0.018 F1 0.71 0.028 G 0.101 0.004 M 1.16 0.046 M1 1.14 0.
PAGE 79
L6219 SO24 PACKAGE MECHANICAL DATA mm DIM. MIN. inch TYP. MAX. MIN. TYP. MAX. A 2.35 2.65 0.093 0.104 A1 0.10 0.30 0.004 0.012 A2 2.55 0.100 B 0.33 0.51 0.013 0.0200 C 0.23 0.32 0.009 0.013 D 15.20 15.60 0.598 0.614 E 7.40 7.60 0.291 0.299 e 1.27 0,050 H 10.0 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 k 0° (min.), 8° (max.) L 0.40 1.27 0.016 0.050 0.10mm B e A A2 h x 45? A1 K A1 L .
PAGE 80
L6219 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice.
PAGE 81
L6506 L6506D CURRENT CONTROLLER FOR STEPPING MOTORS ADVANCE DAT A DESCRIPTION The L6506/D is a linear integrated circuit designed to sense and control the current in stepping motors and similar devices. When used in conjunction with the L293, L298, L7150, L6114/L6115, the chip set forms a constant current drive for an inductive load and performs all the interface function from the control logic thru the power stage. Two or more devices may be synchronized using the sync pin.
PAGE 82
L6506 -L6506D PIN CONNECTIONS (top view) DIP18 SO20 ABSOLUTE MAXIMUM RATINGS Symb ol VCC Vi Ptot Parameter Supply Voltage Input Signals Total Power Dissipation (Tamb = 70°C) for DIP18 Total Power Dissipation (Tamb = 70ÉC) for SO20 Value Unit 10 V 7 V 1 0.8 W W Tj Junction Temperature 150 °C Tstg Storage Temperature -40 to 150 °C THERMAL DATA Symbol R th j-amb Parameter Thermal Resistance Junction-ambient Max. DIP18 SO 20 Un it 80 100 °C/W ELECTRICAL CHARACTERESTICS (VCC = 5.
PAGE 83
L6506 - L6506D ELECTRICAL CHARACTERISTICS (continued) COMPARATOR SECTION PERFORMANCE (Over Operating Temperature Range) Symbol Parameter VIO Input Offset Voltage IIO Input Offset Curent Test Condtions Min. Typ. VIN = 1.4V Max. Unit ±20 mV ±500 nA Max. Unit LOGIC SECTION (Over Operating Temperature Range - TTL compatible inputs & outputs) Symbol Parameter Test Condtions VIH Input High Voltage VIL Input Low Voltage VOH Output High Voltage VCC = 4.
PAGE 84
L6506 -L6506D By substituting equations 1 and 2 into equation 3 and solving for the value of R1 the following equations for the external components can be derived : 1 (4) R1 = ( – 2) RIN DC (5) Looking at equation 1 it can easily be seen that the minimum pulse width of T2 will occur when the value of R1 is at its minimum and the value of R1 at its maximum. Therefore, when evaluating equation 4 the minimum value for R1 of 700Ω (1 KΩ – 30 %) should be used to guarantee the required pulse width.
PAGE 85
L6506 - L6506D Figure 2 : Application Circuit Bipolar Stepper Motor Driver.
PAGE 86
L6506 -L6506D DIP18 PACKAGE MECHANICAL DATA mm DIM. MIN. a1 0.254 B 1.39 TYP. MAX. MIN. TYP. MAX. 0.010 1.65 0.055 0.065 b 0.46 0.018 b1 0.25 0.010 D 6/8 inch 23.24 0.915 E 8.5 0.335 e 2.54 0.100 e3 20.32 0.800 F 7.1 0.280 I 3.93 0.155 L 3.3 Z 1.27 0.130 1.59 0.050 0.
PAGE 87
L6506 - L6506D SO20 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 2.65 0.1 0.104 0.3 a2 MAX. 0.004 0.012 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.013 C 0.5 0.020 c1 45 (typ.) D 12.6 13.0 0.496 0.512 E 10 10.65 0.394 0.419 e 1.27 0.050 e3 11.43 0.450 F 7.4 7.6 0.291 0.299 L 0.5 1.27 0.020 0.050 M S 0.75 0.030 8 (max.
PAGE 88
L6506 -L6506D Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice.
PAGE 89
TDA7272A HIGH PERFORMANCE MOTOR SPEED REGULATOR TACHIMETRIC SPEED REGULATION WITH NO NEED FOR AN EXTERNAL SPEED PICKUP V/I SUPPLEMENTARY PREREGULATION DIGITAL CONTROL OF DIRECTION AND MOTOR STOP SEPARATE SPEED ADJUSTMENT 5.
PAGE 90
TDA7272A ABSOLUTE MAXIMUM RATINGS Symbol Parameter VS DC Supply Voltage VS Dump Voltage (300ms) IO Output Current Ptot Power Dissipation at Tpins = 90°C at Tamb = 70°C Top Tstg Value Unit 24 V 40 V Internally limited 4.3 1 W W Operating Temperature Range -40 to 85 °C Storage Temperature -40 to 150 °C PIN CONNECTION (Top view) THERMAL DATA Symbol 2/16 Value Unit Rth j-amb Thermal Resistance Junction-ambient Parameter max.
PAGE 91
TDA7272A TEST CIRCUIT A ELCTRICAL CHARACTERISTICS (Tamb = 25°C; VS = 13.5V unless otherwise specified) Symbol Parameter VS Operating Supply Voltage IS Supply Current Test Conditions Min. Typ. 5.5 No load 5 Max. Unit 18 V 12 mA OUTPUT STAGE IO Output Currente Pulse IO Output Currente Continuous 1 A 250 mA V10,9,12 Voltage Drop IO = 250mA 1.2 1.5 V V11,9,12 Voltage Drop IO = 250mA 1.
PAGE 92
TDA7272A ELECTRICAL CHARACTERISTICS (Continued) Symbol Parameter Test Conditions Min. Typ. Max. Unit CURRENT SENSE AMPLIFIER R8 Input Resistance GL Loop Gain 100 KΩ 9 TRIGGER AND MONOSTABLE STAGE VIN1 Input Allowed Voltage RIN1 Input Resistance VT Low -0.
PAGE 93
TDA7272A BLOCK DESCRIPTION The principle structure of the element is shown in fig. 2. As to be seen, the motor speed information is derived from the motor current sense drop across the resistors RS ; capacitor CD together with the input impedance of 500 Ω at pin 1 realizes a high pass filter. This pin is internally biased at 20 mV, each negative zero transition switches the input comparator. A 10 mV hysteresis improves the noise immunity.
PAGE 94
TDA7272A The speed n of a k pole motor results : 10.435 n= CT k RP and becomes independent of the resistor RT which only determines the current level and the duty cycle which should be 1 : 1 at the nominal speed for minimum torque ripple. The second fast loop consists of a voltage to current converter which is driven at pin 8 by the low pass filter RL, CL. The output current at this stage is injected by a PNP current mirror into the inner resistor RB.
PAGE 95
TDA7272A Figure 5. Pin 2 Timing resistor. An internal reference voltage (V2 = 0.8 V) gives possibility to fix by an external resistor (RT), from this pin and ground, the output current amplitude of the monostable circuit, which will be reflected into the timing capacitor (pin 3) ; the typical value would be about 50 µ A. Figure 6. Pin 7 Not connected. Pin 8 Input V/I loop.
PAGE 96
TDA7272A Figure 8. substrate diodes, protect the output from inductive vol-tage spikes during the transition phase (fig. 10) Figure 10. Figure 9. Pin 10 Common sense output. From this pin the output current of the bridge configuration (motor current) is fed into RS external resistor in order to generate a proper voltage drop. The drop is supplied into pin 1 for tachometric control and into pin 8 for V/I control (see pin 1 and pin 8 sections). Pin 11 Supply voltage. Pin 9 Output motor left.
PAGE 97
TDA7272A Figure 11. Figure 13. Figure 12. In order to compensate the behaviour of the whole system regulator-motor-load (considering axis friction, load torque, inertias moment of the motor of the load. etc.) a RC series network is also connected between pins 13 and 14 (fig. 12). The value of CA and RA must been chosen experimentally as follows: - Increase of 10 % the speed with respect to the nominal value by connecting in parallel to Rp a resistor with value about 10 time larger.
PAGE 98
TDA7272A Figure 14. Inverting input of main amplifier. In this pin the current reference programmed at pins 20, 17 is compared with the current from the monostable (stream of rectangular pulses). In steady-state condition (constant motor speed) the values are equal and the capacitor CF voltage is constant. This means for the speed n (min 1): 10.435 n= CT k RP where ”k” is the number of collector segments.
PAGE 99
TDA7272A - fast forward, by putting a resistor. In this case it is necessary that also at the higher speed for the duty cycle to be significately less than 1 (see value of RT, CT on pin 2, pin 3 sections). Fig. 19 shows the function controlled with a µP. Figure 18. Figure 19. The typical value of the threshold (L-H) is 1.2 V. Pin 18 Right function control. The voltages applied to this pin and to pin 19 determine the function, as showed in the table.
PAGE 100
TDA7272A Figure 21: Tacho only speed regulation. Figure 22: One direction regulator of one motor , or alternatively of two motors.
PAGE 101
TDA7272A Figure 23: P.C. board and components layout of the circuits of Figg. 20, 21, 22. A APPLICATION SUGGESTION (Fig. 20,21,22) - (For a 2000 r.p.m. 3 pole DC motor with RM = 16Ω) Components Recommended value R S1 1Ω Current sensing tacho loop. R S2 1.5Ω Current sensing V/I loop. RL; CL 22KΩ - 68nF Spike filtering. CD 68nF R T; CT 15KΩ - 47nF Purpose If larger If smaller Allowed range Min. Max. Tacho loop do not regulate 0 Instability may occur. Motor regulator; undercompens.
PAGE 102
TDA7272A Figure 24: Speed regulation vs. supply voltage (circuit of fig. 20). Figure 26: In connection with a Presettable Counter and I/O peripheral the TDA7271A/TDA7272Acontrols the speed through a D/A Converter.
PAGE 103
TDA7272A POWERDIP 20 PACKAGE MECHANICAL DATA mm DIM. MIN. a1 0.51 B 0.85 b b1 TYP. inch MAX. MIN. TYP. MAX. 0.020 1.40 0.033 0.50 0.38 0.020 0.50 D 0.055 0.015 0.020 24.80 0.976 E 8.80 0.346 e 2.54 0.100 e3 22.86 0.900 F 7.10 0.280 I 5.10 0.201 L Z 3.30 0.130 1.27 0.
PAGE 104
TDA7272A Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice.
PAGE 105
TEA3718 TEA3718S STEPPER MOTOR DRIVER ADVANCE DAT A HALF-STEP AND FULL-STEP MODE BIPOLAR DRIVE OF STEPPER MOTOR FOR MAXIMUM MOTOR PERFORMANCE BUILT-IN PROTECTION DIODES WIDE RANGE OF CURRENT CONTROL 5 TO 1500 mA WIDE VOLTAGE RANGE 10 TO 50 V DESIGNED FOR UNSTABILIZED MOTOR SUPPLY VOLTAGE CURRENT LEVELS CAN BE SELECTED IN STEPS OR VARIED CONTINUOUSLY THERMAL OVERLOAD PROTECTION ALARM OUTPUT OR PRE-ALARM OUTPUT (see internal table) Powerdip 12 + 2 + 2 SO-20 ORDERING NUMBERS : TEA3718SDP TEA3718DP ORDERIN
PAGE 106
TEA3718-TEA3718S BLOCK DIAGRAM TEA3718S BLOCK DIAGRAM TEA3718 2/16
PAGE 107
TEA3718-TEA3718S PIN FUNCTIONS Name Fu nctio n OUT B Output Connection (with pin OUTA). The output stage is a ”H” bridge formed by four transistors and four diodes suitable for switching applications. PULSE TIME A parallel RC network connected to this pin sets the OFF time of the lower power transistors. The pulse generator is a monostable triggered by the rising edge of the output of the comparators (toff = 0.69 R TCT). VS(B) Supply Voltage Input for Half Output Stage GND Ground Connection.
PAGE 108
TEA3718-TEA3718S ABSOLUTE MAXIMUM RATINGS Symbol Parameters Valu e Un it 7 50 V V Input Voltage: Logic Inputs Analog Inputs Reference Input 6 VSS 15 V V V Input Current Logic Inputs Analog Inputs -10 -10 mA mA Supply Voltage VSS VS VI ii IO Output Current ±1.
PAGE 109
TEA3718-TEA3718S MAXIMUM POWER DISSIPATION Figure 1. Figure 2.
PAGE 110
TEA3718-TEA3718S ELECTRICAL CHARACTERISTICS (VCC = 5V, ± 5%, Vmm = 10V to 45V, Tamb = 0 to 70°C (Tamb = 25°C for TEA3718FP/SFP) unless otherwise specified) Symbo l Min . T yp. Max. Unit ICC Supply Current Parameter - - 25 mA VIH High Level Input Voltage - Logic Inputs 2 - - V VIL Low Level Input Voltage - Logic Inputs - - 0.8 V IIH High Level Input Current - Logic Inputs - - 20 µA IIL Low Level Input Current - Logic Inputs (VI = 0.
PAGE 111
TEA3718-TEA3718S 7/16
PAGE 112
TEA3718-TEA3718S FUNCTIONAL BLOCKS Figure A: ALARM OUTPUT (TEA3718SP - TEA3718DP) TEA3718 Figure B: PRE-ALARM OUTPUT (TEA3718SDP - TEA3718SFP) TEA3718S 8/16
PAGE 113
TEA3718-TEA3718S ALARM OUTPUTS (TEA3718SP - TEA3718DP) The alarm output becomes low when the junction temperature reaches T°C. When an alarm condition occours, parts of the supply voltage (dividing bridge R - RC) is fed to the comparator input pin (Fig. A) Depending of the RCC value the behaviour of the circuit is different on alarm condition: For several Multiwatt packages a common detection can be obtained as in Fig.
PAGE 114
TEA3718-TEA3718S Figure E: (typical curve) Current Reduction in the Motor on Alarm Condition. Figure F: (Vref 5V) Block Diagram for Half Current on Alarm Condition. Notes: 1. Resistance values given here are for the Vch threshold. They should be adjusted using other comparators threshold or other Vref value.
PAGE 115
TEA3718-TEA3718S FUNCTIONAL DESCRIPTION The circuit is intended to drive a bipolar constant current through one motor winding. The constant current is generated through switch mode regulation. Thereis a choice of threedifferent current levelswith the two logic inputs lN0 and lN1. The current can also be switched off completely. INPUT LOGIC If any of the logic inputs is left open, the circuit will treat it as a high level input.
PAGE 116
TEA3718-TEA3718S PRINCIPAL OPERATING SEQUENCE APPLICATION NOTES MOTOR SELECTION Some stepper motors are not designed for continuous operation at maximum current. As the circuit drives a constant current through the motor, its temperature might increase exceedinglyboth at low and high speed operation. Also, some stepper motors have such high core losses that they are not suited for switch mode current regulation.
PAGE 117
TEA3718-TEA3718S MULTIWATT15 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 5 B 2.65 0.104 C 1.6 0.063 D 0.197 1 0.039 E 0.49 0.55 0.019 0.022 F 0.66 0.75 0.026 0.030 G 1.02 1.27 1.52 0.040 0.050 0.060 G1 17.53 17.78 18.03 0.690 0.700 0.710 H1 19.6 0.772 H2 L 20.2 0.795 21.9 22.2 22.5 0.862 0.874 L1 21.7 22.1 22.5 0.854 0.870 L2 17.65 18.1 0.695 L3 17.25 17.5 17.75 0.679 0.689 L4 10.3 10.7 10.9 0.406 0.
PAGE 118
TEA3718-TEA3718S POWERDIP 16 PACKAGE MECHANICAL DATA mm DIM. MIN. a1 0.51 B 0.85 b b1 TYP. MAX. MIN. TYP. MAX. 0.020 1.40 0.033 0.50 0.38 0.055 0.020 0.50 D 0.015 0.020 20.0 0.787 E 8.80 0.346 e 2.54 0.100 e3 17.78 0.700 F 7.10 0.280 I 5.10 0.201 L Z 14/16 inch 3.30 0.130 1.27 0.
PAGE 119
TEA3718-TEA3718S SO20 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 2.65 0.1 0.104 0.3 a2 MAX. 0.004 0.012 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.013 C 0.5 0.020 c1 45 (typ.) D 12.6 13.0 0.496 0.512 E 10 10.65 0.394 0.419 e 1.27 0.050 e3 11.43 0.450 F 7.4 7.6 0.291 0.299 L 0.5 1.27 0.020 0.050 M S 0.75 0.030 8 (max.
PAGE 120
TEA3718-TEA3718S Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice.