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ZXBM2004JA16TC

Description
TWO PHASE VARIABLE SPEED MOTOR CONTROL PRE-DRIVER
File Size319KB,19 Pages
ManufacturerDiodes
Websitehttp://www.diodes.com/
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ZXBM2004JA16TC Overview

TWO PHASE VARIABLE SPEED MOTOR CONTROL PRE-DRIVER

ZXBM2004
TWO PHASE VARIABLE SPEED
MOTOR CONTROL PRE-DRIVER
Description
The ZXBM2004 is a 2-phase, Brushless Direct Current (BLDC)
motor control pre-driver with variable PWM speed control
suitable for fan and blower motors.
For system flexibility, motor speed can be controlled by
changing SPD pin voltage which can be either from Thermistor
network, external voltage or PWM signal.
To help protect the motor coil, the ZXBM2004 provides Rotor
Lock Protection which shuts down the output drive if rotor lock
is detected. The device automatically re-starts when the rotor
lock is removed.
A Tachometer output is provided by open-drain Frequency
Generator (FG) Pin which allows external interface to monitor
motor rotation or speed. The FG output is the magnetic
change frequency.
The ZXBM2004 is available in small space saving low profile
U-QFN3030-16 and QSOP-16 packages.
NC
ThRef
SPD
C
PWM
GND
C
LCK
S
MIN
Pin Assignments
( Top View )
H+
H-
N/C
ThRef
SPD
C
PWM
S
MIN
GND
ZXBM 2004
1
NEW PRODUCT
V
CC
V+OP
Ph1
Ph2
N/C
FG
RD
C
LCK
QSOP-16
(Top View )
H-
H+
V
CC
V+OP
Ph1
Ph2
NC
FG
RD
Features
Supports two-phase BLDC motor control
Operating voltage: 4.7V to 18V
o
Can be extended with external regulator
PWM speed control via external Thermister, DC voltage or
PWM signals
Reference voltage output
Built-in Hall amplifier allows direct connection of Hall
element
Rotor Lock Protection (Lock detection, output shutdown
and automatic re-start)
Rotor lock detect (RD) output
Minimum speed setting
Frequency generator (FG) output for speed measurements
Low noise
Space saving low profile U-QFN3030-16 and QSOP-16
packages
“Green” Molding Compound
U-QFN 3030 -16
Applications
Desktop PC and Servers fans and blowers
Instrumentation fans
Central heating blowers
Automotive instrument cooling and climate control
Extractor fans
General motors and pumps
ZXBM2004
Document number: DS33433 Rev. 5 - 2
1 of 19
www.diodes.com
February 2012
© Diodes Incorporated
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