A good PCB layout for the DRV5023BIQDBZR involves keeping the high-current paths short and wide, using a solid ground plane, and placing the decoupling capacitors close to the device. TI provides a recommended PCB layout in the datasheet and application notes.
The sense resistor (Rs) should be chosen based on the desired current sense accuracy and the maximum current rating of the device. A smaller Rs value provides better accuracy but increases power loss, while a larger Rs value reduces power loss but decreases accuracy. TI provides a calculation for Rs in the datasheet.
The DRV5023BIQDBZR can operate up to 100 kHz, but the maximum operating frequency depends on the specific application and the device's thermal and power dissipation capabilities. It's essential to consider the device's thermal and power dissipation limits when designing the system.
The DRV5023BIQDBZR has built-in overcurrent protection (OCP) and overvoltage protection (OVP). However, additional external protection components, such as fuses or TVS diodes, may be necessary depending on the application requirements and the device's operating conditions.
The DRV5023BIQDBZR has a thermal derating of 1.5°C/W, which means that the device's power dissipation capability decreases as the ambient temperature increases. It's essential to consider the device's thermal derating when designing the system to ensure reliable operation.
DRV5023BIQDBZR datasheet
by Texas Instruments
