Datasheet

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24326

10kW

3kW

10kW

2 19

20mF

100nF

20mF

100nF

OSC

33kW

2200pF

OSC

68kW

3nF

BRAKE

5nF

100nF

23 8 9 10 4 5 7

2nF

100nF

10kW

5nF

240W

3kW

2N3906

100nF

4kW

TO OTHER

CHANNELS

TO OTHER

CHANNELS

10W

2N3904

10W

IRF9350

IRF532

3kW

FROM

HALL

SENSORS

VMOTOR+15V

+5V TO HALL

SENSORS

VREF

0.02

MOTOR

0.02

REQUIRED

FOR

AVERAGE

CURRENT

SENSING

REQUIRED

FOR BRAKE

AND FAST

REVERSE

100mF

UC3625

DIR

QUAD

51kW

VREF

UC1625

UC2625

UC3625

www.ti.com

SLUS353C –NOVEMBER 2003–REVISED JUNE 2013

Brushless DC Motor Controller

Check for Samples: UC1625, UC2625, UC3625

FEATURES

DESCRIPTION

The UC3625 family of motorcontroller devices

• Drives Power MOSFETs or Power Darlingtons

integrate most of the functions required for high-

Directly

performance brushless dc-motor control into one

• 50-V Open Collector High-Side Drivers

package. When coupled with external power

• Latched Soft Start

MOSFETs or Darlingtons, these devices perform

fixed-frequency PWM motor control in either voltage

• High-Speed Current-Sense Amplifier with Ideal

or current mode while implementing closed-loop

Diode

speed control and braking with smart noise rejection,

• Pulse-by-Pulse and Average Current Sensing

safe direction reversal, and cross–conduction

• Over-Voltage and Under-Voltage Protection

protection.

• Direction Latch for Safe Direction Reversal

Although specified for operation from power supplies

between 10 V and 18 V, the UC1625 controls higher

• Tachometer

voltage power devices with external level-shifting

• Trimmed Reference Sources 30 mA

components. The UC1625 contains fast, high-current

• Programmable Cross-Conduction Protection

push-pull drivers for low-side power devices and 50-V

• Two-Quadrant and Four-Quadrant Operation

open-collector outputs for high-side power devices or

level-shifting circuitry.

The UC1625 is characterized for operation over the

military temperature range of –55°C to +125°C, while

the UC2625 is characterized from –40°C to +105°C

and the UC3625 is characterized from 0°C to +70°C.

(Note: ESD Protection to 2 kV)

TYPICAL APPLICATION

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.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (25 pages)

PAGE 1
UC1625 UC2625 UC3625 www.ti.com SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 Brushless DC Motor Controller Check for Samples: UC1625, UC2625, UC3625 FEATURES DESCRIPTION • The UC3625 family of motorcontroller devices integrate most of the functions required for highperformance brushless dc-motor control into one package.
PAGE 2
UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 www.ti.com ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) VALUE VCC Pwr VCC UNIT 20 Supply voltage 20 PWM IN –0.3 to +6 E/A IN(+), E/A IN(–) –0.3 to +12 ISENSE1, ISENSE2 –1.3 to +6 OV–COAST, DIR, SPEED-IN, SSTART, QUAD SEL –0.3 to +8 H1, H2, H3 –0.3 to +12 PU Output Voltage –0.
PAGE 3
UC1625 UC2625 UC3625 www.ti.com SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 Figure 1. CONNECTION DIAGRAM A.
PAGE 4
UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 www.ti.com ELECTRICAL CHARACTERISTICS Unless otherwise stated, these specifications apply for: TA = 25°C; Pwr VCC = VCC = 12 V; ROSC = 20 kΩ to VREF; COSC = 2 nF; RTACH = 33 kΩ; CTACH = 10 nF; and all outputs unloaded. TA = TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Overall Supply current 14.5 30.0 8.65 8.95 9.45 7.75 8.05 8.55 OV-COAST inhibit threshold 1.65 1.75 1.85 OV-COAST restart threshold 1.55 1.65 1.75 0.
PAGE 5
UC1625 UC2625 UC3625 www.ti.com SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 ELECTRICAL CHARACTERISTICS (continued) Unless otherwise stated, these specifications apply for: TA = 25°C; Pwr VCC = VCC = 12 V; ROSC = 20 kΩ to VREF; COSC = 2 nF; RTACH = 33 kΩ; CTACH = 10 nF; and all outputs unloaded. TA = TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Low-Side Drivers Voh, –1 mA, down from VCC 1.60 2.1 V Voh, –50 mA, down from VCC 1.75 2.2 0.05 0.4 0.36 0.
PAGE 6
UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 www.ti.com BLOCK DIAGRAM Quad Sel 22 RC-Osc 25 PWM In 26 E/A Out 27 E/A In(+) 1 E/A In (–) 28 SSTART 24 ISENSE 3 S OSC VCC 19 OV-Coast 23 Speed-In R 0.2V 2.5V 250W 9V 16 PUC 11 Pwr Vcc 14 PDA 13 PDB 12 PDC 15 GND 20 Tach-Out PWM CLOCK 6 DIRECTION LATCH 7 PWM CLOCK DIR 8 D +5V Q H1 Q H2 COAST CHOP QUAD CROSS CONDUCTION PROTECTION LATCHES L 9 D +5V H3 PUB S 3.
PAGE 7
UC1625 UC2625 UC3625 www.ti.com SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 DEVICE INFORMATION Terminal Functions TERMINAL NAME DIR, SPEED-IN E/A IN(+), E/A IN(–), E/A OUT, PWM IN GND H1, H2, H3 ISENSE1, ISENSE2, ISENSE OV-COAST NO. I/O DESCRIPTION 6, 7 The position decoder logic translates the Hall signals and the DIR signal to the correct driver signals (PUs and PDs).
PAGE 8
UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 www.ti.com Terminal Functions (continued) TERMINAL NAME PDA, PDB, PDC PUA, PUB, PUC PWR VCC QUAD SEL RC-BRAKE RC-OSC 8 NO. I/O DESCRIPTION 12, 13, 14 These outputs can drive the gates of N-channel power MOSFETs directly or they can drive the bases of power Darlingtons if some form of current limiting is used. They are meant to drive low-side power devices in high-current output stages.
PAGE 9
UC1625 UC2625 UC3625 www.ti.com SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 Terminal Functions (continued) TERMINAL NAME SSTART TACH-OUT VCC VREF I/O NO. DESCRIPTION 24 Any time that VCC drops below threshold or the sensed current exceeds the overcurrent threshold, the soft-start latch is set. When set, it turns on a transistor that pulls down on SSTART. Normally, a capacitor is connected to this pin, and the transistor will completely discharge the capacitor.
PAGE 10
UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) 10 Supply Current vs Temperature Soft-Start Pull-Up Current vs Temperature Figure 4. Figure 5. Soft-Start Discharge Current vs Temperature Current Sense Amplifier Transfer Function vs ISENSE2 - ISENSE1 Figure 6. Figure 7.
PAGE 11
UC1625 UC2625 UC3625 www.ti.com SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 APPLICATION INFORMATION Cross Conduction Prevention The UC3625 inserts delays to prevent cross conduction due to overlapping drive signals. However, some thought must always be given to cross conduction in output stage design because no amount of dead time can prevent fast slewing signals from coupling drive to a power device through a parasitic capacitance. The UC3625 contains input latches that serve as noise blanking filters.
PAGE 12
UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 www.ti.com Power Stage Design The UC3625 is useful in a wide variety of applications, including high-power in robotics and machinery. The power output stages used in such equipment can take a number of forms, according to the intended performance and purpose of the system. Figure 9 show four different power stages with the advantages and disadvantages of each. For high-frequency chopping, fast recovery circulating diodes are essential.
PAGE 13
UC1625 UC2625 UC3625 www.ti.com SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 FIGURE A FIGURE B TO MOTOR TO MOTOR RS RS FIGURE C FIGURE D TO MOTOR TO MOTOR RS RD RS Figure 9. Four Power Stage Designs Table 1.
PAGE 14
UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 www.ti.com For drives where speed is critical, P-Channel MOSFETs can be driven by emitter followers as shown in Figure 10. Here, both the level shift NPN and the PNP must withstand high voltages. A zener diode is used to limit gate-source voltage on the MOSFET. A series gate resistor is not necessary, but always advisable to control overshoot and ringing.
PAGE 15
UC1625 UC2625 UC3625 www.ti.com SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 Figure 12. Power NPN High-Side Driver Figure 13.
PAGE 16
UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 www.ti.com Fast High-Side N-Channel Driver with Transformer Isolation A small pulse transformer can provide excellent isolation between the UC3625 and a high-voltage N-Channel MOSFET while also coupling gate drive power. In this circuit (shown in Figure 14), a UC3724 is used as a transformer driver/encoder that duty-cycle modulates the transformer with a 150-kHz pulse train.
PAGE 17
UC1625 UC2625 UC3625 www.ti.com SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 Computational Truth Table Table 2 shows the outputs of the gate drive and open collector outputs for given hall input codes and direction signals. Numbers at the top of the columns are pin numbers. These devices operate with position sensor encoding that has either one or two signals high at a time, never all low or all high.
PAGE 18
UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 www.ti.
PAGE 19
UC1625 UC2625 UC3625 www.ti.com SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 REVISION HISTORY Changes from Revision B (April 2007) to Revision C • Page Added Storage Temperature and temperature range to Absolute Maximum Ratings Table ...............................................
PAGE 20
PACKAGE OPTION ADDENDUM www.ti.
PAGE 21
PACKAGE OPTION ADDENDUM www.ti.com 10-Jun-2014 Orderable Device Status (1) UC3625QTR ACTIVE Package Type Package Pins Package Drawing Qty PLCC FN 28 750 Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HR Op Temp (°C) Device Marking (4/5) 0 to 70 UC3625Q (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
PAGE 22
PACKAGE OPTION ADDENDUM www.ti.
PAGE 23
PACKAGE MATERIALS INFORMATION www.ti.com 29-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) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant UC2625DWTR SOIC DW 28 1000 330.0 32.4 11.35 18.67 3.1 16.0 32.0 Q1 UC3625DWTR SOIC DW 28 1000 330.0 32.4 11.35 18.67 3.1 16.0 32.
PAGE 24
PACKAGE MATERIALS INFORMATION www.ti.com 29-May-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) UC2625DWTR SOIC DW 28 1000 367.0 367.0 55.0 UC3625DWTR SOIC DW 28 1000 367.0 367.0 55.
PAGE 25
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