Document Number: MC33932

Rev. 3.0, 1/2009

Freescale Semiconductor

Advance Information

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

© Freescale Semiconductor, Inc., 2009. All rights reserved.

5.0 A Throttle Control H-Bridge

The 33932 is a monolithic H-Bridge Power IC in a robust thermally

enhanced package. The 33932 has two independent monolithic H-

Bridge Power ICs in the same package. They are designed primarily for

automotive electronic throttle control, but are applicable to any low-

voltage DC servo motor control application within the current and

voltage limits stated in this specification.

Each H-bridge in the 33932 is able to control inductive loads with

currents up to 5.0 A peak. RMS current capability is subject to the

degree of heatsinking provided to the device package. Internal peak-

current limiting (regulation) is activated at load currents above 6.5 A

±1.5 A. Output loads can be pulse width modulated (PWM-ed) at

frequencies up to 11 kHz. A load current feedback feature provides a

proportional (0.24% of the load current) current output suitable for

monitoring by a microcontroller’s A/D input. A Status Flag output

reports under-voltage, over-current, and over-temperature fault

conditions.

Two independent inputs provide polarity control of two half-bridge

totem-pole outputs. Two independent disable inputs are provided to

force the H-bridge outputs to tri-state (high-impedance off-state).

Features

• 8.0 to 28 V continuous operation (transient operation from 5.0 to

40 V)

• 235 m

•3.0 V and 5.0 V TTL / CMOS logic compatible inputs

• Over-current limiting (regulation) via internal constant-off-time PWM

• Output short-circuit protection (short to VPWR or GND)

• Temperature-dependant current-limit threshold reduction

• All inputs have an internal source/sink to define the default (floating input) states

• Sleep Mode with current draw < 50 µA (each half with inputs floating or set to match default logic states)

Figure 1. MC33932 Simplified Application Diagram

THROTTLE CONTROL H-BRIDGE

33932

ORDERING INFORMATION

Device

Temperature

Package

MC33932VW/R2

-40°C to 125°C

44 HSOP

VW SUFFIX (PB-FREE)

98ARH98330A

44-PIN HSOP

WITH PROTRUDING HEAT SINK

SFA

FBA

IN1

IN2

D1

EN/D2

VPWRA

CCPA

OUT1

OUT2

PGNDA

AGNDA

MCU

33932

MOTOR

OUT3

OUT4

MOTOR

SFB

IN4

IN3

FBB

D3

EN/D4

PGNDB

AGNDB

VPWRB

CCPB