Datasheet

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DRV102

PWM SOLENOID/VALVE DRIVER

FEATURES

● HIGH OUTPUT DRIVE: 2.7A

● WIDE SUPPLY RANGE: +8V to +60V

● COMPLETE FUNCTION

PWM Output

Internal 24kHz Oscillator

Digital Control Input

Adjustable Delay and Duty Cycle

Over/Under Current Indicator

● FULLY PROTECTED

Thermal Shutdown with Indicator

Internal Current Limit

● POWER PACKAGES: 7-Lead TO-220 and

7-Lead Surface-Mount DDPAK

APPLICATIONS

● ELECTROMECHANICAL DRIVERS:

Solenoids Positioners

Actuators

High Power Relays/Contactors

Valves Clutches/Brakes

● SOLENOID OVERHEAT PROTECTORS

● FLUID AND GAS FLOW CONTROLLERS

● PART HANDLERS

● ELECTRICAL HEATERS/COOLERS

● MOTOR SPEED CONTROLLERS

● INDUSTRIAL CONTROL

● FACTORY AUTOMATION

● MEDICAL ANALYSIS

● PHOTOGRAPHIC PROCESSING

DESCRIPTION

The DRV102 is a high-side power switch employing a

pulse-width modulated (PWM) output. Its rugged de-

sign is optimized for driving electromechanical devices

such as valves, solenoids, relays, actuators, and

positioners. The DRV102 is also ideal for driving

thermal devices such as heaters and lamps. PWM

operation conserves power and reduces heat rise in

the device, resulting in higher reliability. In addition,

adjustable PWM allows fine control of the power

delivered to the load. Time from dc output to PWM

output is externally adjustable.

102

V102

Delay

Adjust

Input

(TTL-Compatible)

Off

Thermal Shutdown

Over/Under Current

Flag

Duty Cycle

Adjust

Load

DRV102

24kHz

Oscillator

PWM

(+8V to +60V)

(Gnd electrically

connected to tab)

Out

Gnd

(1)

Delay

The DRV102 can be set to provide a strong initial

closure, automatically switching to a soft hold mode for

power savings. Duty cycle can be controlled by a

resistor, analog voltage, or digital-to-analog converter

for versatility. A flag output indicates thermal shutdown

and over/under current limit. A wide supply range

allows use with a variety of actuators.

The DRV102 is available in a 7-lead staggered TO-220

package and a 7-lead surface-mount DDPAK plastic

power package. It operates from –55°C to +125°C.

SBVS009B – JANUARY 1998 – REVISED MAY 2009

www.ti.com

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

www.ti.com

Summary of content (27 pages)

PAGE 1
DRV102 DRV 102 DRV 102 SBVS009B – JANUARY 1998 – REVISED MAY 2009 www.ti.com PWM SOLENOID/VALVE DRIVER FEATURES APPLICATIONS ● HIGH OUTPUT DRIVE: 2.
PAGE 2
SPECIFICATIONS At TC = +25°C, VS = +24V, load = series diode MUR415 and 100Ω, and 4.99kΩ Flag pull-up to +5V, unless otherwise noted.
PAGE 3
CONNECTION DIAGRAMS ABSOLUTE MAXIMUM RATINGS(1) Top Front View TO-220, DDPAK 7-Lead Stagger-Formed TO-220 1 2 3 4 5 6 7 7-Lead DDPAK Surface-Mount PWM VS Delay Gnd PWM VS NOTES: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. (2) Vapor-phase or IR reflow techniques are recommended for soldering the DRV102F surface-mount package.
PAGE 4
PIN DESCRIPTIONS PIN # NAME DESCRIPTION Pin 1 Input The input is compatible with standard TTL levels. The device output becomes enabled when the input voltage is driven above the typical switching threshold, 1.7V. Below this level, the output is disabled. With no connection to the pin, the input level rises to 3.4V. Input current is 20µA when driven high and 80µA with the input low. The input may be driven to the power supply (VS) without damage.
PAGE 5
TYPICAL PERFORMANCE CURVES At TC = +25°C and VS = +24V, unless otherwise noted. DUTY CYCLE vs TEMPERATURE DUTY CYCLE and DUTY CYCLE ERROR vs VOLTAGE 90 RPWM = 25.5kΩ 6 70 4 IO = 0.1A 60 2 Error 50 0 40 –2 IO = 1A 30 –4 53 VS = +8V Duty Cycle (%) Duty Cycle Duty Cycle Error (%) 80 Duty Cycle (%) 54 8 IO = 0.1A to 1A 20 0.5 1.0 1.5 2.0 2.5 3.0 3.5 50 VS = +60V 48 –8 0 VS = +24V 51 49 –6 10 52 –75 4.
PAGE 6
TYPICAL PERFORMANCE CURVES (CONT) At TC = +25°C and VS = +24V, unless otherwise noted. FLAG OPERATION OVER-CURRENT LIMIT (VS = +60V, CD = 220pF, RPWM = 25.5kΩ, Load = 350mH || 47Ω) Onset of current limit where VOUT begins to drop 60V VIN VOUT 60V FLAG OPERATION UNDER-CURRENT (VS = +60V, CD = 120pF, RPWM = 25.
PAGE 7
TYPICAL PERFORMANCE CURVES (CONT) At TC = +25°C and VS = +24V, unless otherwise noted. NOMINAL DELAY TIME TO PWM vs TEMPERATURE OUTPUT LEAKAGE CURRENT vs TEMPERATURE 103 –200 Output Transistor Off VO = 0V –175 99 –150 Delay (ms) Leakage Current (µA) CD = 0.
PAGE 8
BASIC OPERATION pin connected to 0.1µF and duty cycle set for 25%. See the “Delay Adjust” and “Duty Cycle Adjust” text for equations and further explanation. The DRV102 is a high-side, bipolar power switch employing a pulse-width modulated (PWM) output for driving electromechanical and thermal devices. Its design is optimized for two types of applications: a two-state driver (open/close) for loads such as solenoids and actuators, and a linear driver for valves, positioners, heaters, and lamps.
PAGE 9
APPLICATIONS INFORMATION POWER SUPPLY The DRV102 operates from a single +8V to +60V supply with excellent performance. Most behavior remains unchanged throughout the full operating voltage range. Parameters which vary significantly with operating voltage are shown in the Typical Performance Curves. CONNECTIONS TO LOAD The PWM switching voltage and currents can cause electromagnetic radiation. Proper physical layout of the load current will help minimize radiation.
PAGE 10
ADJUSTABLE DUTY CYCLE Voltage-Controlled Duty Cycle The DRV102’s externally adjustable duty cycle provides an accurate means of controlling power delivered to the load. Duty cycle can be set from 10% to 90% with an external resistor, analog voltage, or the output of a D/A converter. Reduced duty cycle results in reduced power dissipation. This keeps the DRV102 and load cooler, resulting in increased reliability for both devices. PWM frequency is a constant 24kHz.
PAGE 11
STATUS FLAG Flag (pin 7) provides fault indication for under-current, over-current, and thermal shutdown conditions. During a fault condition, Flag output is driven low (pin voltage typically drops to 0.2V). A pull-up resistor, as shown in Figure 7, is required to interface with standard logic. A small value capacitor may be needed between Flag and ground in noisy applications.
PAGE 12
For best thermal performance, the tab of the DDPAK surface-mount version should be soldered directly to a circuit board copper area. Increasing the copper area improves heat dissipation. Figure 12 shows typical thermal resistance from junction-to-ambient as a function of the copper area. PACKAGE MOUNTING Figure 10 provides recommended PCB layouts for both the TO-220 and DDPAK power packages. The tab of both packages is electrically connected to ground (pin 4).
PAGE 13
THERMAL RESISTANCE vs CIRCUIT BOARD COPPER AREA Thermal Resistance, θJA (°C/W) 50 DRV102 DDPAK Surface-Mount Package 1oz. copper 40 Circuit Board Copper Area 30 20 10 0 0 1 2 Copper Area 3 4 DRV102 DDPAK Surface-Mount Package 5 (inches2) FIGURE 12. DDPAK Thermal Resistance versus Circuit Board Copper Area. output current times the voltage across the conducting output transistor times the duty cycle.
PAGE 14
The difficulty in selecting the heat sink required lies in determining the power dissipated by the DRV102. For dc output into a purely resistive load, power dissipation is simply the load current times the voltage developed across the conducting output transistor times the duty cycle. Other loads are not as simple. Once power dissipation for an application is known, the proper heat sink can be selected. Heat Sink Selection Example A TO-220 package’s maximum dissipation is 2 Watts.
PAGE 15
APPLICATION CIRCUITS +5V 5kΩ Flag Can drive most types of solenoid-actuated valves and actuators 7 5 Thermal Shutdown Over/Under Current VS VS Pinch Valve 24kHz Oscillator Microprocessor TTL Control Input 1 Flexible Tube PWM 6 On Delay DRV102 Off 2 Delay Adjust 3 CD RPWM NOTE: (1) Duty cycle can be programmed by a resistor, analog voltage, or D/A converter. Do not drive below 0.1V. 4 Plunger Out Gnd Solenoid Coil Duty Cycle Adjust(1) (10% to 90%) FIGURE 14. Fluid Flow Control System.
PAGE 16
Reduced mechanical actuation delay with high voltage pull-in followed by low duty cycle DRV102 5 On/Off +40V (max for TPIC6273) VS 1 6 Out 3 2 4 RPWM 150kΩ (25% Duty Cycle) CD 0.047µF Full power pulse width is control plus interval set by CD. 74LS05 +5V 4 5 6 7 14 15 16 17 20 TI TPIC6273 (Octal Power Switch) ••• 10 2 11 ••• 3 8 9 12 13 18 Control 19 TTL/CMOS Solenoid Selection Inputs FIGURE 17. Improved Switching Time When Driving Multiple Loads. 16 DRV102 www.ti.
PAGE 17
a) VS DRV102 5 1 On/Off Delay Adjust Higher temperature results in lower duty cycle. 6 2 Out 3 4 Heating Element Gnd Thermistor Duty Cycle Adjust R1 R2 b) VS 10µF DRV102 1 5 On/Off 0.1µF Delay Adjust REF200 2 6 7, 8 Out 3 4 Gnd Heating Element 2µF Film 100µA 100µA 1 2 0.1µF VS 7 Duty Cycle Adjust 1kΩ 6 2 OPA134 10MΩ 3 4 10kΩ 4.7V or Thermistor 5kΩ at +25°C IN4148(1) Temperature Control Higher temperature results in lower duty cycle.
PAGE 18
DRV102 5 +12V 1 Input (On/Off) dc Tachometer Coupled to Motor 6 Out 3 2 4 M Delay Adjust R1 T R2 Speed Control(1) NOTE: (1) Select R1/R2 ratio based on tachometer output voltage. FIGURE 19. Constant Speed Motor Control. 5 Open circuit will provide 3.4V “on” signal +40V DRV102 1 6 2 40kΩ Speed Control Input 0V to +10V +15V 3 4 M Delay Adjust 0.
PAGE 19
VZ +24V DRV102 2kΩ 5 VS 5.1V Zener 25kΩ 1 0.1µF 100kΩ On Off 2 3 6 1kΩ Out Current Set VZ 100kΩ OPA237 4 Load Duty Cycle Adjust Delay Adjust RSHUNT 0.1Ω 0.1µF 5kΩ 0.6V gives ~ 90% Duty Cycle 3.7V gives ~ 10% Duty Cycle FIGURE 21. Constant Current Output Drive. Only one DRV102 is turned on at sequence time. 5 Phase 2 Stepper Logic In VS 5 VS DRV102 Phase 3 Stepper Logic In DRV102 6 6 Motor 5 Phase 1 Stepper Logic In VS DRV102 6 FIGURE 22.
PAGE 20
Revision History DATE REVISION 5/09 B PAGE SECTION 1 Front Page 12 Package Mounting DESCRIPTION Updated front page appearance. Changed Figure 10 to show TI package designator. NOTE: Page numbers for previous revisions may differ from page numbers in the current version. 20 DRV102 www.ti.
PAGE 21
PACKAGE OPTION ADDENDUM www.ti.
PAGE 22
PACKAGE OPTION ADDENDUM www.ti.com 10-Apr-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
PAGE 23
PACKAGE MATERIALS INFORMATION www.ti.com 8-May-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) DRV102F/500 DDPAK/ TO-263 KTW 7 500 330.0 24.4 DRV102FKTWT DDPAK/ TO-263 KTW 7 50 330.0 24.4 Pack Materials-Page 1 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.95 16.5 5.15 16.0 24.0 Q2 10.6 15.6 4.9 16.0 24.
PAGE 24
PACKAGE MATERIALS INFORMATION www.ti.com 8-May-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DRV102F/500 DDPAK/TO-263 KTW 7 500 346.0 346.0 41.0 DRV102FKTWT DDPAK/TO-263 KTW 7 50 367.0 367.0 45.
PAGE 25
MECHANICAL DATA MPSF015 – AUGUST 2001 KTW (R-PSFM-G7) PLASTIC FLANGE-MOUNT 0.410 (10,41) 0.385 (9,78) 0.304 (7,72) –A– 0.006 –B– 0.303 (7,70) 0.297 (7,54) 0.0625 (1,587) H 0.055 (1,40) 0.0585 (1,485) 0.300 (7,62) 0.064 (1,63) 0.045 (1,14) 0.252 (6,40) 0.056 (1,42) 0.187 (4,75) 0.370 (9,40) 0.179 (4,55) 0.330 (8,38) H 0.296 (7,52) A 0.605 (15,37) 0.595 (15,11) 0.012 (0,305) C 0.000 (0,00) 0.019 (0,48) 0.104 (2,64) 0.096 (2,44) H 0.017 (0,43) 0.050 (1,27) C C F 0.034 (0,86) 0.
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