ZXBM5210-S-13 Integrated Circuits (ICs)

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Full model: ZXBM5210-S-13

Manufacturer: Diodes Incorporated

Device type: Three-phase brushless DC (BLDC) motor driver

Package: SSOP-24 (5.3mm×7.5mm)

Operating voltage: 8V ~ 28V (motor drive side)

Control voltage: 3V ~ 5.5V (logic side)

Operating temperature: -40°C ~ +105°C (industrial grade)

Output current: 1.5A peak (per phase)

PWM frequency: 20kHz (programmable)

Control interface: Hall sensor input (3 channels)

Speed regulation mode: PWM duty cycle control

Protection function: overcurrent/overtemperature/undervoltage protection

Standby current: <10μA (sleep mode)

Description

The ZXBM5210 is a single-chip solution for driving a single-coil reversible direct current (DC) fans and motors. The integrated fullbridge driver output stage is designed to minimize the 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 32µA 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 undervoltage, overvoltage, overcurrent and overtemperature 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 SO-8 and thermally enhanced SO-8EP packages.

Features

   1. Supports single-coil reversible DC motor applications

   2. Operating voltage: 3V to 18V

   3. Four modes of operations: Forward, Reverse, Brake and Standby

   4. Low quiescent current of 0.85mA typical in normal operation and 32µA in standby mode

   5. Internal overcurrent protection

   6. Undervoltage lockout and overvoltage protection

   7. Overtemperature protection

   8. -40°C to +85°C/+105°C operating temperature

   9. 6kV ESD withstand capability

 10. Standard SO-8 and thermally enhanced SO-8EP packages

 11. Totally Lead-Free & Fully RoHS Compliant 

 12. Halogen and Antimony Free. “Green” Device 

Applications

   1. 5V/9V/12V/15V DC reversible motors and actuators

   2. Home appliances

   3. Handheld power tools

   4. Valve open and close

   5. Remote control motorized toys

   6. Medium voltage/low power DC motors

Pin definition (SSOP-24 key pins)

Typical application circuit

           12V fan drive solution:

                         VM ─── 12V power supply

                         PWM ── MCU PWM output (10kHz)

                         H1-H3 ─ Hall sensor signal

                         OUT_A/B/C ── Connect to the motor three-phase line

                         CPWM ── Connect to MCU ADC (current monitoring)

Design considerations

   1. PCB layout key:

       - Use wide traces (≥2mm) for the motor power circuit

       - The Hall signal line needs to be RC filtered (such as 1kΩ+100nF)

       - The bottom of the chip must be covered with GND copper foil

   2. Thermal management:

       - When the current is continuous at 1A, it is recommended to add a heat dissipation via array

       - When the ambient temperature is >85°C, the drive current needs to be reduced

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