A good PCB layout for the UCC28911DR involves keeping the input and output stages separate, using a star-ground configuration, and placing the IC close to the input capacitors. Additionally, using a solid ground plane and minimizing trace lengths can help reduce EMI.
The choice of input and output capacitors depends on the specific application requirements. Generally, low-ESR capacitors with a voltage rating above the maximum input voltage are recommended. For the input capacitor, a value between 10uF to 22uF is typical, while for the output capacitor, a value between 10uF to 47uF is typical.
The UCC28911DR is rated for operation from -40°C to 125°C, but the maximum ambient temperature range depends on the specific application and the thermal design of the system. In general, it's recommended to keep the ambient temperature below 85°C for reliable operation.
The UCC28911DR has a built-in OVP feature that can be enabled by connecting the OVP pin to a voltage divider network. The OVP threshold can be set by adjusting the voltage divider ratio. Additionally, an external OVP circuit can be implemented using a zener diode and a resistor.
The recommended input voltage range for the UCC28911DR is 8V to 18V, but it can operate from 7V to 20V. However, the maximum input voltage should not exceed 20V to prevent damage to the IC.
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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.
