A good PCB layout for the TPS22902BYFPR involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. Additionally, it's recommended to use a shielded inductor and to keep the device away from high-frequency signals.
To ensure proper power-up and configuration, it's recommended to follow a specific power-up sequence, which includes applying the input voltage, then the enable signal, and finally the clock signal. Additionally, the device should be configured in a specific order, such as setting the output voltage, then the switching frequency, and finally the soft-start time.
The TPS22902BYFPR has a maximum junction temperature of 150°C. To ensure safe operation, it's recommended to provide adequate heat sinking, such as using a thermal pad or a heat sink, and to keep the device away from other heat sources. Additionally, the device's thermal resistance should be considered when designing the PCB.
To troubleshoot issues with the TPS22902BYFPR, it's recommended to follow a systematic approach, which includes checking the input voltage, output voltage, and switching frequency, as well as verifying the device's configuration and PCB layout. Additionally, using an oscilloscope to visualize the device's signals can help identify the root cause of the issue.
To ensure EMI and EMC compliance, it's recommended to follow good PCB design practices, such as using a solid ground plane, minimizing trace lengths, and using shielding. Additionally, the device's switching frequency and output voltage should be considered when designing the PCB, and the device should be tested for compliance with regulatory standards such as CISPR and FCC.
TPS22902BYFPR datasheet
by Texas Instruments
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