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Freescale Semiconductor Electronic Components Datasheet

MC33931 Datasheet

5.0A Throttle Control H-bridge

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MC33931 pdf
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 RDS(ON) @ TJ=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 (TA)
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
VDD
VPWR
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.


Freescale Semiconductor Electronic Components Datasheet

MC33931 Datasheet

5.0A Throttle Control H-bridge

No Preview Available !

MC33931 pdf
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
VPWR
LOGIC SUPPLY
VDD
CCP
IN1
IN2
EN/D2
D1
SF
FB
AGND
VCP CHARGE
PUMP
GATE DRIVE
AND
PROTECTION
LOGIC
TO GATES
HS1
LS1
HS2
LS2
VSENSE
ILIM PWM
HS1
LS1
HS2
OUT1
OUT2
LS2
PGND
CURRENT MIRROR
AND
CONSTANT OFF-TIME
PWM CURRENT REGULATOR
PGND
Figure 2. 33931 Simplified Internal Block Diagram
33931
2
Analog Integrated Circuit Device Data
Freescale Semiconductor


Part Number MC33931
Description 5.0A Throttle Control H-bridge
Maker Freescale Semiconductor
Total Page 26 Pages
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