Document Number: MPC17550

Rev. 2.0, 7/2006

Freescale Semiconductor

Advance Information

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

© Freescale Semiconductor, Inc., 2006. All rights reserved.

Quad H-Bridge Micromotor

Driver with DC/DC Boost

Converter

The 17550 is a monolithic quad H-Bridge power IC ideal for portable

electronic applications containing tiny bipolar stepper motors and/or

brush DC-motors powered by two-to-four cell NiCd/NiMH batteries.

The 17550 operates from 2.5 V to 5.5 V, with independent control of

each H-Bridge via parallel 3.0 V or 5.0 V logic-compatible I/O. The

device features an on-board DC/DC boost converter that allows motor

operation all the way down to 1.6 V (the boost converter supplies the

gate-drive voltage for each of the four independent H-bridge output

stages). Each output bridge has its own gate-drive and logic circuitry

with built-in shoot-through current protection.

The 17550 has four operating modes: Forward, Reverse, Brake,

of 1.2

Ω max @ 25°C. In addition, it can be set into a very low current-

drain standby mode.

The H-Bridge outputs can be independently PWM’ed at up to

200 kHz for speed/torque and current control. The 17550 can

efficiently drive many types of micromotors owing to its low output

resistance and high output slew rates.

Features

• Output Current 700 mA (Continuous per Output)

• Shoot-Through Current Protection Circuit

• PWM Control Input Frequency up to 200 kHz

• Built-In DC/DC Boost Converter

• Low Power Consumption Standby Mode

• Undervoltage Detection and Shutdown Circuit

• Pb-Free Packaging Designated by Suffix Code EV

Figure 1. 17550 Simplified Application Diagram

H-BRIDGE MOTOR DRIVER

EV SUFFIX (Pb-FREE)

98ASA10591D

36-TERMINAL VMFP

17550

ORDERING INFORMATION

Device

Temperature

Package

MPC17550EV/EL

-10°C to 60°C

36 VMFP

VDD

INDR

INDF

HBDR

HBDF

INCR

INCF

HBCR

HBCF

INBR

INBF

INAR

INAF

HBAR

HBAF

HBBR

HBBF

PSB

VG

LX

VM

GND

MCU

OE

17550