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PDF ZXBM2004 Data sheet ( Hoja de datos )
| Número de pieza | ZXBM2004 | |
| Descripción | TWO PHASE VARIABLE SPEED MOTOR CONTROL PRE-DRIVER | |
| Fabricantes | Diodes | |
| Logotipo |  |
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ZXBM2004
TWO PHASE VARIABLE SPEED
MOTOR CONTROL PRE-DRIVER
Description
Pin Assignments
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.
H+ 1
H-
N/C
ThRef
SPD
CPWM
SMIN
GND
( Top View )
ZXBM 2004
QSOP-16
(Top View )
VCC
V+OP
Ph1
Ph2
N/C
FG
RD
CLCK
The ZXBM2004 is available in small space saving low profile
U-QFN3030-16 and QSOP-16 packages.
NC
ThRef
SPD
CPWM
Ph1
Ph2
NC
FG
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
1 page  
ZXBM2004
TWO PHASE VARIABLE SPEED
MOTOR CONTROL PRE-DRIVER
Electrical Characteristics (cont.) (TA = 25°C, VCC = 12V)
Symbol
Characteristics
VThRef ThRef reference output voltgae
IOThRef ThRef output current
IISMIN SMIN input current
VSPDL SPD voltage minimum
VSPDH SPD voltage maximum
IISPD SPD voltage maximum
ILCKC CLCK charge current
ILCKD CLCK discharge current
VCLCKTHH CLCK high threshold voltage
VCLCKTHL CLCK low threshold voltage
Lock condition On:Off ratio
IFGOL FG Low level output current
VFGOL FG Low level output voltage
IRDOL RD Low level output current
VRDOL RD Low level output current
tCD Commutation delay
Conditions
IOThRef = 100µA
Min
2.88
VIN = 2V, SPD=open
100% PWM drive
0% PWM drive
VIN = 2V
2.8
IFGOL = 5mA
IRDOL = 5mA
Typ.
2.96
-0.25
1
3
0.8
3.8
4.6
3
1
1:12
7.5
Max
3.10
1
-0.3
2
054
5
0.5
5
0.5
Unit
V
mA
µA
V
V
µA
µA
µA
V
V
mA
V
mA
V
µs
ZXBM2004
Document number: DS33433 Rev. 5 - 2
5 of 19
www.diodes.com
February 2012
© Diodes Incorporated
5 Page 
Application Note (cont.)
ZXBM2004
TWO PHASE VARIABLE SPEED
MOTOR CONTROL PRE-DRIVER
Fig. 4 Typical Circuit for Constant Speed Operation
ZXBM2004
Document number: DS33433 Rev. 5 - 2
11 of 19
www.diodes.com
February 2012
© Diodes Incorporated
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet ZXBM2004.PDF ] | |
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