THROTTLE CONTROL H-BRIDGE

33931

ORDERING INFORMATION

Device

(Add R2 Suffix for

Tape and Reel)

Temperature

Package

MC33931VW

-40 to 125°C

44 HSOP

MC33931EK

32 SOICW-EP

VW SUFFIX (PB-FREE)

98ARH98330A

44-PIN HSOP

WITH PROTRUDING

HEAT SINK

EK SUFFIX (PB-FREE)

98ARL10543D

32-PIN SOICW-EP

Document Number: MC33931

Rev. 4.0, 10/2012

Freescale Semiconductor

Technical Data

© Freescale Semiconductor, Inc., 2008-2012. All rights reserved.

5.0 A Throttle Control H-bridge

The 33931 is a monolithic H-Bridge Power IC in a robust thermally

enhanced package. It is designed primarily for automotive electronic

throttle control, but is applicable to any low voltage DC servo motor

control application within the current and voltage limits stated in this

specification.

The 33931 H-Bridge 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. The disable inputs are provided to force the H-

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

Features

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

40 V)

•235 m

MOSFET)

•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

SF

FB

IN1

IN2

D1

EN/D2

VPWR

CCP

OUT1

OUT2

PGND

AGND

MCU

33931

MOTOR

Figure 1. MC33931 Simplified Application Diagram