A3932SEQ-TTR Allegro MicroSystems, Inc., A3932SEQ-TTR Datasheet

A3932SEQ-TTR

Manufacturer Part Number

A3932SEQ-TTR

Description

IC MOSFET DRVR 5V DUAL HI/LO SIDE 3-PHASE BRDG 32PLCC T/R

Manufacturer

Allegro MicroSystems, Inc.

Datasheet

1.A3932SEQ-TTR.pdf (12 pages)

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GHC

GHB

GHA

GLB

GLA

Supply Voltage, V

Peak Regulator Voltage, V

Logic Input Voltage Range,

Sense Voltage Range,

Output Voltage Range,

Operating Tem per a ture Range,

Junction Temperature, T

Storage Temperature Range,

ABSOLUTE MAXIMUM RAT INGS

SENSE

GHA

.................................. -20°C to +85°C

............................... -55°C to +150°C

, V

................... -0.3 V to V

, V

............................ -5 V to +1.5 V

GHB

, V

at T

, V

.................. -5 V to +50 V

GHC

..................... V

.............................. 50 V

= 25°C

.. -5 V to V

.................. +150°C

REG

............... 15 V

LCAP

+ 0.3 V

+ 17 V

Dwg. PP-068-1

SENSE

TACH

DIR

PWM

BRAKE

3932

FEATURES

■ Drives Wide Range of N-Channel MOSFETs

■ Synchronous Rectiﬁ cation

■ Power MOSFET Protection

■ Adjustable Dead Time for Cross-Conduction Pro tec tion

■ 100% Duty Cycle Operation

■ Selectable Fast or Slow Current-Decay Modes

■ Internal PWM Peak Current Control

■ High-Current Gate Drive

■ Motor Lead Short-to-Ground Protection

■ Internal 5-V Regulator

■ Brake Input

■ PWM Torque-Control Input

■ Fault-Diagnostic Output

■ Tachometer Output

■ Thermal Shutdown

■ Undervoltage Protection

polar brushless dc motors. Its high gate-current drive capability allows

driving a wide range of n-channel power MOSFETs and can support

motor supply voltages to 50 V. Bootstrapped high-side drive blocks

provide the ﬂ oat ing positive supplies for the gate drive and minimize

the component count normally required. The high-side cir cuit ry also

em ploys a unique FET monitoring circuit that ensures the gate voltages

are at the proper levels before turn-on and during the ON cycle.

regulate the maximum load current to a desired value. The peak load-

current limit is set by the user’s selection of an input reference volt age

and external sensing resistor. The ﬁ xed off-time pulse duration is set by

a user-selected external RC timing network. For added ﬂ exibility, the

Use the following complete part numbers when ordering:

A3932SEQ

A3932SEQ-T

A3932SEQTR

A3932SEQTR-T

The A3932SEQ is a three-phase MOSFET con trol ler for use with bi-

Internal ﬁ xed off-time PWM current-control circuitry can be used to

Part Number

AND

BENEFITS

MOSFET CONTROLLER

THREE-PHASE POWER

Pb-Free

Yes

–

32 pieces/tube

13-in. reel, 800 pieces/reel

Packing

continued ...

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A3932SEQ-TTR Summary of contents

Page 1

... S 3932 MOSFET CONTROLLER The A3932SEQ is a three-phase MOSFET con trol ler for use with bi- polar brushless dc motors. Its high gate-current drive capability allows driving a wide range of n-channel power MOSFETs and can support motor supply voltages Bootstrapped high-side drive blocks provide the ﬂ ...

Page 2

... The initial ‘–TR–’ variant sufﬁ x indicates tape and reel packing. The ‘–T’ ﬁ nal variant sufﬁ x indicates lead (Pb) free composition, with 100% matte tin leadframe plating. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2002, 2003 Allegro MicroSystems, Inc. ...

Page 3

ELECTRICAL CHARACTERISTICS: unless otherwise noted 0.1 µ µF; C boot REG Parameter Symbol Supply Current Quiescent Current Reference Voltage Output Voltage ∆V Output Voltage Regulation ∆ VREG(∆VBB) Digital Logic Levels Logic Input Voltage ...

Page 4

THREE-PHASE POWER MOSFET CONTROLLER NOTES: 1.Typical Data is for design information only. 2.Negative current is defined as coming out of (sourcing) the specified device terminal. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ...

Page 5

THREE-PHASE POWER MOSFET CONTROLLER — A logic input used to enable the device, internally pulled (+5 V). A RESET = 1 will disable the LCAP device and force all gate drivers coasting the ...

Page 6

THREE-PHASE POWER MOSFET CONTROLLER — Open-drain output to indicate fault condition; FAULT = 1 (external pull-up) for any of the following: 1 – invalid HALL input code, 2 – undervoltage condition detected at VREG. 3 – thermal shutdown, or ...

Page 7

Logic Inputs DIR ...

Page 8

THREE-PHASE POWER MOSFET CONTROLLER To reduce power dissipation in the external MOSFETs, the A3932 control logic turns on the appropriate low-side and high-side driver during the load- current recirculation, PWM-off cycle. Synchronous rectification allows current to flow through the ...

Page 9

Internal fixed off-time PWM circuitry is implemented to limit load current to a desired value. When a high-side and low-side MOSFET are turned on, current will increase in the motor winding until it reaches a value given ...

Page 10

THREE-PHASE POWER MOSFET CONTROLLER 0.013 0.021 0.546 0.476 LONG SIDE (0.446 0.376 SHORT SIDE) 0.050 BSC NOTES: 1. Lead spacing tolerance is non-cumulative. 2. Exact body and lead configuration at vendor’s option within limits shown 3. Supplied in standard ...

Page 11

... The products described here are manufactured under one or more U.S. patents or U.S. patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current ...

Page 12

THREE-PHASE POWER MOSFET CONTROLLER * Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits or over-current protection voltage limits. Negative current is defined as coming out of (sourcing) the output. † Complete ...

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