MC33931_12 Datasheet, PDF (1/26 Pages) Freescale Semiconductor, Inc – 5.0 A Throttle Control H-bridge

Freescale Semiconductor
Technical Data
Document Number: MC33931
Rev. 4.0, 10/2012
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.
33931
THROTTLE CONTROL H-BRIDGE
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).
VW SUFFIX (PB-FREE)
98ARH98330A
44-PIN HSOP
WITH PROTRUDING
HEAT SINK
EK SUFFIX (PB-FREE)
98ARL10543D
32-PIN SOICW-EP
Features
• 5.0 to 28 V continuous operation (transient operation from 5.0 to
40 V)
• 235 mΩ maximum R_DS(ON) @ T_J=150 °C (each H-bridge
MOSFET)
• 3.0 V and 5.0 V TTL / CMOS logic compatible inputs
ORDERING INFORMATION
Device
(Add R2 Suffix for
Tape and Reel)
Temperature
Range (T_A)
Package
MC33931VW
MC33931EK
-40 to 125°C
44 HSOP
32 SOICW-EP
• 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
V_DD
V_PWR
MCU
33931
SF
VPWR
FB
CCP
OUT1
IN1
IN2
D1
EN/D2
OUT2
PGND
AGND
MOTOR
Figure 1. MC33931 Simplified Application Diagram
© Freescale Semiconductor, Inc., 2008-2012. All rights reserved.