17550 Datasheet, PDF (1/15 Pages) Freescale Semiconductor, Inc – Quad H-Bridge Micromotor Driver with DC/DC Boost Converter

Freescale Semiconductor
Advance Information
Document Number: MPC17550
Rev. 2.0, 7/2006
Quad H-Bridge Micromotor
Driver with DC/DC Boost
Converter
17550
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,
and Tri-Stated (High Impedance). The 17550 has a low total R_DS(ON)
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
• Low Total R_DS(ON) 0.7 Ω (Typ), 1.2 Ω (Max) @ 25°C
• 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
H-BRIDGE MOTOR DRIVER
EV SUFFIX (Pb-FREE)
98ASA10591D
36-TERMINAL VMFP
ORDERING INFORMATION
Device
Temperature
Range (T_A)
Package
MPC17550EV/EL -10°C to 60°C
36 VMFP
V_M
V_DD
17550
VM
VDD
OE
LX
PSB
VG
INAF HBAF
INAR HBAR
MCU
INBF HBBF
INBR HBBR
INCF HBCF
INCR HBCR
INDF HBDF
INDR HBDR
GND
Figure 1. 17550 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., 2006. All rights reserved.