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Freescale Semiconductor - Throttle Control H-Bridge

Numéro de référence PC33926
Description Throttle Control H-Bridge
Fabricant Freescale Semiconductor 
Logo Freescale Semiconductor 





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PC33926 fiche technique
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Document Number: MC33926
Rev. 4.0, 12/2006
5.0 A Throttle Control H-Bridge
The 33926 is a monolithic H-Bridge Power IC 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 33926 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 20 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
undervoltage, overcurrent, and overtemperature fault conditions.
33926
AUTOMOTIVE THROTTLE H-BRIDGE
ACTUATOR/ MOTOR EXCITER
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). An
input invert input changes the IN1 and IN2 inputs to LOW = true logic.
Features
BoStCtoAmLE V2:i1ew
PNB SUFFIX
98ARL10579D
32-PIN PQFN
• 8.0 V to 28 V Continuous Operation (Transient Operation from
5.0 V to 36 V)
• 225 mmaximum RDS(ON) @ 150°C (each H-Bridge MOSFET)
• 3.0 V and 5.0 V TTL / CMOS Logic Compatible Inputs
• Overcurrent Limiting (Regulation) via Internal Constant-Off-
Time PWM
• Output Short Circuit Protection (Short to VPWR or Ground)
ORDERING INFORMATION
Device
PC33926PNB/R2
Temperature
Range (TA)
- 40°C to 125°C
Package
32 PQFN
• 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 (with Inputs Floating or Set to Match Default Logic States)
VDD
VPWR
MCU
33926
SF VPWR
FB CCP
IN1 OUT1
IN2
INV
SLEW
D1
OUT2
D2 PGND
EN AGND
MOTOR
Figure 1. 33926 Simplified Application Diagram
*This document contains certain information on a product under development. Free-
scale reserves the right to change or discontinue this product without notice
© Freescale Semiconductor, Inc., 2007. All rights reserved.

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