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Document order number: MPC17C724

Rev 2.0, 12/2005

Freescale Semiconductor

Technical Data

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

0.4 A Dual H-Bridge Motor

Driver IC

The 17C724 is a compact monolithic dual channel H-Bridge power

IC, ideal for portable electronic applications containing bipolar

stepper motors or brush DC motors such as those used in camera

lenses and shutters.

The 17C724 can operate efficiently with supply voltages from 2.7

V to 5.5 V and can provide continuous motor drive currents of 0.4 A

with low RDS(ON) of 1.0 Ω. It is easily interfaced to low-cost MCUs

via parallel 3.0 V- or 5.0 V-compatible logic and has built-in shoot-

through current protection circuit and undervoltage detector to avoid

malfunction.

The 17C724 has four output control modes: Forward, Reverse,

Brake, and Tri-State (High Impedance). The H-bridge outputs are

designed to be independently PWM’ed at up to 200 kHz for speed/

torque and current control.

Features

• Manufactured in SMOS7 Process Technology

• Built-In 2-Channel H-Bridge Driver

• Provides 4 Driving Modes (Forward, Reverse, Break, High

Impedance)

• Direct Interface to MCU

• Low ON-Resistance, R

DS(ON)

= 1.0 Ω (Typical)

• Dual Channel Parallel Drive, R

DS(ON)

= 0.5 Ω (Typical)

• Output Current Driver (IDR) is 400 mA (Continuous)

• Low Power Consumption

• Built-In Shoot-Through Current Prevention Circuit

• Built-In Low-Voltage Shutdown Circuit

• PWM Control Frequency 200 kHz (Max)

• Very Compact Size, Comes in 16-Terminal QFN Package (3 x 3 mm Terminal Pitch: 0.5 mm)

• Pb-Free Packaging Designated by Suffix Code EP

Figure 1. 17C724 Simplified Application Diagram

SCALE 4:1

MOTOR DRIVER

EP (Pb-FREE) SUFFIX

98ARL10566D

16-Terminal QFN

17C724

ORDERING INFORMATION

Device

Temperature

Range (T

)

Package

MPC17C724EP/R2 -20°C to 85°C 16 QFN

MCU

3.0 V

17C724

Bipola

Step

Motor

VDD

OUT1A

OUT1B

OUT2B

OUT2A

GND

IN1A

IN1B

IN2A

IN2B

PSAVE

Summary of content (13 pages)

PAGE 1
Freescale Semiconductor Technical Data MPC17C724 Rev 2.0, 12/2005 Document order number: 0.4 A Dual H-Bridge Motor Driver IC 17C724 The 17C724 is a compact monolithic dual channel H-Bridge power IC, ideal for portable electronic applications containing bipolar stepper motors or brush DC motors such as those used in camera lenses and shutters. The 17C724 can operate efficiently with supply voltages from 2.7 V to 5.5 V and can provide continuous motor drive currents of 0.4 A with low RDS(ON) of 1.0 Ω.
PAGE 2
INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM VDD PSAVELowVoltage Shutdown VM1 IN1A OUT1A H-Bridge 1 OUT1B IN1B VDD PSAVE Control Logic PGND1 Level Shifter Predriver VM2 IN2A OUT2A H-Bridge 2 OUT2B IN2B PGND2 PGND2 LGND Figure 2.
PAGE 3
TERMINAL CONNECTIONS TERMINAL CONNECTIONS VDD PGND1 LGND PSAVE Transparent Top View of Package 16 15 14 13 1N1B 2 11 IN2B OUT1A 3 10 OUT1B VM1 4 9 VM2 5 6 7 8 OUT2B IN2A PGND2 12 PGND2 1 OUT2A 1N1A Figure 3. 17C724 Terminal Connections Table 1. 17C724 Terminal Definitions A functional description of each terminal can be found in the Functional Terminal Description section beginning on page 8.
PAGE 4
MAXIMUM RATINGS MAXIMUM RATINGS Table 2. Maximum Ratings All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or permanent damage to the device. Ratings Symbol Value Unit Normal Operation (Steady-State) V M(SS) - 0.3 to 6.0 Transient Conditions (3) V M(PK) - 0.3 to 6.5 Logic Supply Voltage V DD 6.0 V Input Terminal Voltage V IN - 0.3 to VDD + 0.
PAGE 5
STATIC ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 3. Static Electrical Characteristics Characteristics noted under conditions TA = 25°C, VDD = VM = 3.0V, unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted. Characteristic Symbol Min Typ Max Unit Motor Driver Supply Voltage VM 2.7 3.0 5.5 Logic Supply Voltage V DD 2.7 3.0 5.5 VMSTBY – – 1.0 VDDSTBY – – 1.
PAGE 6
DYNAMIC ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 4. Dynamic Electrical Characteristics Characteristics noted under conditions TA = 25°C, VDD = VM = 3.0V, unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted. Characteristic Symbol Min Typ Max Unit Pulse Input Frequency f IN – – 200 kHz Input Pulse Rise Time (15) tR – – 1.
PAGE 7
TIMING DIAGRAMS TIMING DIAGRAMS IN1, IN2, PSAVE VDDDETon 50% VDD tPLH 50% 1.0 V tPHL t t VDDDET 90% OUTA, OUTB VDDDEToff 2.5 V VDDDET 90% 0% (<1.0 µA) IM 10% Figure 4. tPLH and tPHL Timing Figure 5. Low-Voltage Detection Timing Table 5.
PAGE 8
FUNCTIONAL DESCRIPTION INTRODUCTION FUNCTIONAL DESCRIPTION INTRODUCTION The 17C724 is a monolithic dual H-Bridge that is ideal in portable electronic applications to control bipolar step motors and brush DC motors such as those used in camera lens and shutters. The 17C724 can operate efficiently with supply voltages as low as 2.7 V to as high as 5.5 V, and provide continuous motor drive currents of 0.4 A while handling peak currents up to 0.8 A. It is easily interfaced to low-cost MCUs via parallel 3.
PAGE 9
TYPICAL APPLICATIONS FUNCTIONAL TERMINAL DESCRIPTION TYPICAL APPLICATIONS Figure 6 shows a typical application for the 17C724. 3.0 V 17C724 VDD VM OUT1A OUT1B IN1A IN1B IN2A IN2B MCU OUT2A PSAVE OUT2B GND Figure 6. 17C724 Typical Application Diagram CEMF SNUBBING TECHNIQUES PCB LAYOUT Care must be taken to protect the IC from potentially damaging CEMF spikes induced when commutating currents in inductive loads.
PAGE 10
PACKAGING PACKAGE DIMENSIONS PACKAGING PACKAGE DIMENSIONS For the most current package revision, visit www.freescale.com and perform a keyword search using the “98A” listed below.
PAGE 11
PACKAGING PACKAGE DIMENSIONS EP (Pb-FREE) SUFFIX 16-TERMINAL QFN NON-LEADED PACKAGE 98ARL10566D ISSUE A 17C724 Analog Integrated Circuit Device Data Freescale Semiconductor 11
PAGE 12
REVISION HISTORY REVISION HISTORY REVISION 2.
PAGE 13
How to Reach Us: Home Page: www.freescale.com E-mail: support@freescale.com USA/Europe or Locations Not Listed: Freescale Semiconductor Technical Information Center, CH370 1300 N. Alma School Road Chandler, Arizona 85224 +1-800-521-6274 or +1-480-768-2130 support@freescale.