A good PCB layout for the TPS613221ADBVR involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To ensure the stability of the output voltage, it is recommended to use a minimum output capacitance of 10uF, and to keep the equivalent series resistance (ESR) of the output capacitor below 1 ohm. Additionally, the output voltage should be monitored and adjusted as needed to prevent oscillations.
The maximum input voltage that the TPS613221ADBVR can handle is 18V. Exceeding this voltage may cause damage to the device.
The output voltage of the TPS613221ADBVR can be calculated using the following formula: Vout = (R1/R2) * (Vin - Vref), where R1 and R2 are the resistors in the feedback network, Vin is the input voltage, and Vref is the reference voltage (typically 0.8V).
The thermal derating of the TPS613221ADBVR is 6.4mW/°C above 25°C. This means that the device's power rating decreases by 6.4mW for every degree Celsius above 25°C.
TPS613221ADBVR datasheet
by Texas Instruments
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