MC34929EP Datasheet, PDF (1/23 Pages) Freescale Semiconductor, Inc – Brushless DC 1.0 AMP 28 VOLT Motor Driver IC

Freescale Semiconductor
Advance Information
Brushless DC 1.0 AMP 28 VOLT
Motor Driver IC
The 34929 Brushless DC (BLDC) Motor Driver IC is a complete
BLDC motor driver system in one chip. It is designed to efficiently drive
three-phase BLDC motors up to 1A and 28V, and has built in protection
features making it ideal for a variety of consumer, portable, and office
applications containing small motors. It incorporates digital I/O, making
it easy to use with an MCU in a closed-loop motor control system. It has
a built-in Hall-effect sensors interface and a Hall sensors voltage
supply, so it can operate BLDC motors as a stand-alone controller/
driver. Its sophisticated analog/mixed-signal state machine
accommodates several modes of operation, including: Forward (CW),
Reverse (CCW), Run/Stop, Braking, Variable Speed (External PWM),
and Torque Limit (maximum-current-limit) modes.
Features
• Single-Supply Operation (8V–28V)
• Built-in Hall Sensors Controlled-Supply (VH)
• 3-Phase Hall Sensors Interface
• Two Tachometer Outputs (1X and 3X Hall Frequency)
• Adjustable Maximum Current Limit (Torque Limiting)
• Adjustable Stalled Rotor Detection and Protection
• Short Circuit Detection and Protection
• Over-Temperature Detection and Thermal Shutdown
• Undervoltage Detection and Shutdown
• Pb-Free Packaging Designated by Suffix Code EP.
CP ³⁴⁹²⁹
V+
Document Number: MC34929
Rev. 7.0, 11/2006
34929
BRUSHLESS DC MOTOR DRIVER
QFN SUFFIX
98ARH99033A
24-PIN QFN (4X4X1)
ORDERING INFORMATION
Device
Temperature
Range (T_A)
Package
MC34929EP
-0°C to 85°C
24 QFN
BDLC
MOTOR
MCU
CP+ CP-
PWM
RUN
DIR
3XTACH
TACH
CT
GND
CRES V+
PHC
PHB
PHA
LSS
ISENS
PGND
VH
HAB+
HAB-
HBC+
HBC-
HCA+
HCA-
Figure 1. 34929 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.