A good PCB layout for the TPS22922BYZPR 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 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure proper power-up and power-down of the TPS22922BYZPR, it's recommended to follow a controlled power-up sequence, where the input voltage is applied before the enable signal. During power-down, the enable signal should be turned off before the input voltage is removed. This helps prevent unwanted current surges and ensures a clean shutdown.
The TPS22922BYZPR has a thermal pad that must be connected to a solid ground plane to ensure proper heat dissipation. Additionally, the device should be mounted on a PCB with a thermal relief pattern to help dissipate heat. It's also recommended to keep the device away from other heat sources on the PCB.
The TPS22922BYZPR has a built-in soft-start feature that helps limit the inrush current during startup. However, it's still recommended to add an external soft-start capacitor to further limit the inrush current and prevent voltage droop. The value of the capacitor should be chosen based on the specific application requirements.
To minimize EMI, it's recommended to use a shielded inductor, keep the PCB traces short and away from sensitive circuits, and use a common-mode choke to filter the output. Additionally, the device should be placed in a shielded enclosure to prevent radiation.
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TPS22922BYZPR Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
