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33932

Description
5.0 A throttle control H-bridge
File Size770KB,21 Pages
ManufacturerFREESCALE (NXP)
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33932 Overview

5.0 A throttle control H-bridge

Freescale Semiconductor
Advance Information
Document Number: MC33932
Rev. 3.0, 1/2009
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
33932
THROTTLE CONTROL H-BRIDGE
VW SUFFIX (PB-FREE)
98ARH98330A
44-PIN HSOP
WITH PROTRUDING HEAT SINK
ORDERING INFORMATION
Device
Temperature
Range (T
A
)
Package
44 HSOP
MC33932VW/R2
-40°C to 125°C
• 8.0 to 28 V continuous operation (transient operation from 5.0 to
40 V)
• 235 mΩ maximum R
DS(ON)
@ 150°C (each H-Bridge 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 (each half with inputs floating or set to match default logic states)
V
DD
V
PWR
33932
SFA
FBA
IN1
IN2
D1
EN/D2
VPWRA
CCPA
OUT1
MOTOR
OUT2
PGNDA
AGNDA
IN3
IN4
D3
EN/D4
FBB
SFB
V
DD
PGNDB
AGNDB
VPWRB
CCPB
OUT3
MOTOR
OUT4
V
PWR
MCU
Figure 1. MC33932 Simplified Application Diagram
* 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.
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