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PC33926PNB/R2 Datasheet

  • PC33926PNB/R2

  • 5.0 A Throttle Control H-Bridge

  • 25頁

  • FREESCALE

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Freescale Semiconductor
Product Preview
Document Number: MC33926
Rev. 7.0, 6/2007
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 鹵 1.5 A.
Output loads can be pulse width modulated (PWM鈥檈d) 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鈥檚 A/D input. A Status Flag output reports
undervoltage, overcurrent, and overtemperature 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). An
invert input changes the IN1 and IN2 inputs to LOW = true logic.
Features
33926
AUTOMOTIVE THROTTLE H-BRIDGE
ACTUATOR/ MOTOR EXCITER
Bottom View
SCALE 2:1
PNB SUFFIX (Pb-FREE)
98ARL10579D
32-PIN PQFN
鈥?8.0 V to 28 V Continuous Operation (Transient Operation from 5.0
V to 40 V)
鈥?225 m鈩?maximum R
DS(ON)
@ 150擄C (each H-Bridge MOSFET)
ORDERING INFORMATION
鈥?3.0 V and 5.0 V TTL / CMOS Logic Compatible Inputs
Temperature
Device
Package
鈥?Overcurrent Limiting (Regulation) via Internal Constant-Off-Time
Range (T
A
)
PWM
PC33926PNB/R2
- 40擄C to 125擄C
32 PQFN
鈥?Output Short Circuit Protection (Short to VPWR or Ground)
鈥?Temperature-Dependant Current-Limit Threshold Reduction
鈥?All Inputs have an Internal Source/Sink to Define the Default (Floating Input) States
鈥?Sleep Mode with Current Draw < 50 碌A(chǔ) (with Inputs Floating or Set to Match Default Logic States)
鈥?Pb-Free Packaging Designated by Suffix Code PNB
V
DD
V
PWR
33926
SF
FB
IN1
IN2
VPWR
CCP
OUT1
MOTOR
OUT2
PGND
AGND
MCU
INV
SLEW
D1
D2
EN
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
漏 Freescale Semiconductor, Inc., 2007. All rights reserved.

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