A good PCB layout for the UCC2893DR 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 loop areas can help reduce EMI.
Choose input capacitors with low ESR and high ripple current rating. For output capacitors, select ones with low ESR and high capacitance. The capacitor values should be based on the output voltage, output current, and switching frequency. A good starting point is to use 10uF to 22uF ceramic capacitors for both input and output.
The UCC2893DR can operate in an ambient temperature range of -40°C to 85°C. However, the junction temperature should not exceed 150°C to ensure reliable operation.
The output voltage of the UCC2893DR can be adjusted by changing the feedback resistors (R1 and R2) or the voltage reference (VREF) pin. The output voltage is calculated as VOUT = VREF x (1 + R2/R1).
The maximum input voltage for the UCC2893DR is 18V. Exceeding this voltage can damage the IC.
UCC2893DR datasheet
by Texas Instruments
