A good PCB layout for the UCC2818DTR involves keeping the input and output stages separate, using a star-ground configuration, and placing the input and output capacitors close to the device. Additionally, using a solid ground plane and minimizing trace lengths can help reduce EMI.
The choice of input and output capacitors for the UCC2818DTR depends on the specific application requirements. In general, low-ESR capacitors with a voltage rating above the maximum input voltage are recommended. A minimum capacitance of 10uF is recommended for the input capacitor, and 22uF for the output capacitor.
The UCC2818DTR has an operating ambient temperature range of -40°C to 125°C. However, the device can be operated at temperatures above 125°C for short periods of time, but this may affect its reliability and lifespan.
To ensure stability, the UCC2818DTR requires a minimum output capacitance of 22uF, and the output voltage should be decoupled with a capacitor of at least 10nF. Additionally, the input voltage should be well-regulated and free of noise, and the device should be operated within its recommended operating conditions.
Yes, the UCC2818DTR can be used in a synchronous rectification application. However, it requires an external FET driver and a sense resistor to monitor the current. The device's internal FET driver is not suitable for synchronous rectification.
UCC2818DTR datasheet
by Texas Instruments
