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33926_09

更新时间: 2022-12-14 19:14:06
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飞思卡尔 - FREESCALE /
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5.0 A Throttle Control H-Bridge

33926_09 数据手册

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Document Number: MC33926  
Rev. 9.0, 12/2009  
Freescale Semiconductor  
Advance Information  
5.0 A Throttle Control H-Bridge  
33926  
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.  
AUTOMOTIVE THROTTLE H-BRIDGE  
ACTUATOR/ MOTOR EXCITER  
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 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). An  
inverted input changes the IN1 and IN2 inputs to LOW = true logic.  
Bottom View  
PNB SUFFIX (Pb-FREE)  
98ARL10579D  
32-PIN PQFN  
Features  
• 5.0 to 28 V continuous operation (transient operation from 5.0 to  
40 V)  
• 225 mΩ maximum RDS(ON) @ 150°C (each H-Bridge MOSFET)  
• 3.0 V and 5.0 V TTL / CMOS logic compatible inputs  
• Over-current limiting (Regulation) via an internal constant-off-time  
PWM  
• Output short-circuit protection (short to VPWR or ground)  
• Temperature-dependent current-limit threshold reduction  
ORDERING INFORMATION  
Temperature  
Device  
Package  
Range (T )  
A
MC33926PNB/R2  
-40°C to 125°C  
32 PQFN  
• 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)  
• Pb-free packaging designated by suffix code PNB  
V
V
PWR  
DD  
33926  
SF  
VPWR  
CCP  
FB  
IN1  
IN2  
INV  
SLEW  
D1  
OUT1  
MOTOR  
MCU  
OUT2  
D2  
PGND  
AGND  
EN  
Figure 1. 33926 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., 2007-2009. All rights reserved.  

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