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ZXBM5210 Datasheet PDF - Diodes

Part Number ZXBM5210
Description REVERSIBLE DC MOTOR DRIVE
Manufacturers Diodes 
Logo Diodes Logo 



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ZXBM5210 datasheet, circuit
ZXBM5210
REVERSIBLE DC MOTOR DRIVE WITH SPEED CONTROL
Description
The ZXBM5210 is a single chip solution for driving a single-coil
reversible direct current (DC) fans and motors. The integrated full-
bridge driver output stage is designed to minimize audible switching
noise and electromagnetic interference (EMI) providing a low noise
solution
For system flexibility, the device has four modes of operation:
Forward, Reverse, Brake and Standby selected via FWD and REV
pins. The Forward and Reverse modes provide the motor rotation
direction control, the Brake mode allows quick stop and the Standby
mode helps system efficiency by powering down most of the internal
circuits to consume less than 32uA typical. The motor speed can be
adjusted by changing the duty ratio of the PWM signal on the FWD or
REV pins in the PWM mode or alternatively by adjusting DC voltage
input signal to the VREF pin in the VREF speed control mode.
To help protect the IC and the motor coil the ZXBM5210 includes
under voltage, over voltage, over current and over temperature
protections. Once the safe operating range has been exceeded the
device shuts down the output drive to help prevent over stress on the
IC or the coil. The device internal current protection threshold is 1.5A
typical.
The ZXBM5210 is available in the standard SO8 and thermally
enhanced SO8-EP packages.
Features
Supports single-coil reversible DC motor applications
Operating voltage: 3V to 18V
Four modes of operations: Forward, Reverse, Brake and
Standby
Low quiescent current of 0.85mA typical in normal operation
and 32µA in standby mode
Internal over current protection
Under voltage lockout and over voltage protection
Over temperature protection
-40°C to +85°C /105°C operating temperature
6kV ESD withstand capability
Standard SO-8 and thermally enhanced SO-8EP
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
SO-8
SO-8EP
Applications
• 5V / 9V/ 12V / 15V DC reversible motors and actuators
• Home appliances
• Handheld power tools
• Valve open and close
• Remote control motorized toys
• Medium Voltage/ Low Power DC Motors
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
ZXBM5210
Document number: DS36765 Rev. 1 - 2
1 of 17
www.diodes.com
December 2013
© Diodes Incorporated

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ZXBM5210 equivalent
ZXBM5210
Application Note
Rotation Control and Standby Modes
The device has FWD and REV pins for controlling the motor rotation directions. The device has four motor operation modes: 1) Standby mode,
2) Forward mode, 3) Reverse mode and 4) Brake mode. The four modes are controlled by the FWD and REV logic pins.
Supply
Supply
S1 S3
Off Off
S1 S3
Off Off
OUT1
M OUT2
S4 S2
Off Off
GND
Standby mode
OUT1 M OUT2
S4 S2
On On
GND
Brake mode
FWD
L
H
L
H
PWM
L
H
REV
L
L
H
H
L
PWM
H
VREF
x
3V to VDD
3V to VDD
x
VDD
VDD
x
OUT1
Open
H
L
L
H
PWM
L
OUT2
Open
L
H
L
PWM
H
L
Operating mode
Standby mode – All switches are off
Forward mode – Current flows from OUT1 to OUT2; VREF duty control
Reverse mode – Current flows from OUT2 to OUT1; VREF duty control
Brake mode – Short circuit brake with low side switches on
Forward mode – Current flows from OUT1 to OUT2; PWM control mode
Reverse mode – Current flows from OUT2 to OUT1; PWM control mode
Brake mode – Short circuit brake with low side switches on
In the brake mode, switches S2 and S4 are ON allowing the motor to stop quickly. All the internal control circuits are fully operational.
In the standby mode all the output drive switches are off and additionally, the internal circuits are also turned off to minimize power consumption.
The power consumption in the standby mode is less than in the brake mode. If running motor enters the Standby mode, due to the body diodes
the motor free wheels to idle state. Whenever the motor enters the standby mode from any mode (except the brake mode) the control logic will
remain active in previous mode for at least 125µs before shutting down the internal circuits. To prevent device entering the standby mode during
operating mode changes, the mode change signals should be completed within 125µs.
In the forward mode, with switches S1-S2 ON and S3-S4 OFF, OUT1 is high and OUT2 is low. The motor current flows from OUT1 to OUT2. In
the reverse mode, switches S1-S4 are ON while S1-S2 are OFF to allow motor current flow from OUT2 to OUT1.
In the forward or reverse mode, for VREF speed control, the output drive duty ratio is generated internally based on the voltage on the VREF pin.
For PWM speed control, external PWM signals applied to the FWD or REV pins control the PWM switching of the low side S2 (forward mode)
or S4 (reverse mode). See application section for further details.
The ZXBM5210 has three modes of speed control: VREF speed control mode, PWM speed control mode and by adjusting the supply voltage
ZXBM5210
Document number: DS36765 Rev. 1 - 2
5 of 17
www.diodes.com
December 2013
© Diodes Incorporated

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Information Total 17 Pages
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