MC33926(2014) 데이터 시트보기 (PDF) - Freescale Semiconductor

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MC33926
(Rev.:2014)

5.0 A Throttle Control H-Bridge

Freescale Semiconductor 

Freescale Semiconductor

Technical Data

5.0 A Throttle Control H-Bridge

The 33926 is a SMARTMOS 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.

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.

Features

• 5.0 to 28 V continuous operation (transient operation from 5.0 to

40 V)

• 225 m maximum RDS(on) at 150 °C (each H-Bridge MOSFET)

• 3.0 V and 5.0 V TTL / CMOS logic compatible inputs

• Overcurrent limiting (Regulation) via an internal constant-off-time

PWM

• Output short-circuit protection (short to VPWR or ground)

• Temperature dependent 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)

Document Number: MC33926

Rev. 10.0, 8/2014

33926

AUTOMOTIVE THROTTLE H-BRIDGE

ACTUATOR/ MOTOR EXCITER

BoStCtoAmLE V2:i1ew

PNB SUFFIX (Pb-FREE)

98ARL10579D

32-PIN PQFN

Applications

• Electronic Throttle Control (ETC)

• Exhaust Gas Recirculation (EGR)

• Turbo Flap Control

• Industrial and Medical pumps and motor control

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

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