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Freescale Semiconductor Electronic Components Datasheet

MC34929 Datasheet

Brushless DC 1.0 AMP 28 VOLT Motor Driver IC

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MC34929 pdf
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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 (TA)
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.


Freescale Semiconductor Electronic Components Datasheet

MC34929 Datasheet

Brushless DC 1.0 AMP 28 VOLT Motor Driver IC

No Preview Available !

MC34929 pdf
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
V+
VDD
V Ref
Regs &
V Ref
CP+ CP-
CRES
Charge
Pump
VGHS
V+
High Side
Gate Drive
Low Side
Gate Drive
SC Det
Q1 Q3
Q5
Q2 Q4
Q6
PHC
PHB
PHA
LSS
PWM
RUN
DIR
CT
3XTACH
TACH
GND
34929
2
UVLO
TLIM
VO
G
V5V
V5V
VCC
V5V
Input
Protection
Stall
Det
Control
Logic
HAB
HBC
HCA
ILIM
ISENS
PGND
VH
HAB+
HAB-
HBC+
HBC-
HCA+
HCA-
Figure 2. 34929 Simplified Internal Block Diagram
Analog Integrated Circuit Device Data
Freescale Semiconductor


Part Number MC34929
Description Brushless DC 1.0 AMP 28 VOLT Motor Driver IC
Maker Freescale Semiconductor
Total Page 23 Pages
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