A good PCB layout for the UCC3818DTR involves keeping the input and output stages separate, using a star-ground configuration, and placing the input filter components close to the IC. Additionally, using a solid ground plane and minimizing trace lengths can help reduce EMI.
The choice of input filter components depends on the specific application and the desired level of noise attenuation. A good starting point is to use a 1-10uF capacitor and a 1-10ohm resistor in series, and then adjust the values based on the specific noise frequency and amplitude.
The UCC3818DTR can deliver up to 1A of output current, but this depends on the input voltage, output voltage, and the specific application. It's recommended to check the datasheet and perform thermal calculations to ensure the device can handle the required output current.
The UCC3818DTR has a built-in overcurrent protection feature that can be enabled by connecting a resistor between the OC pin and the output voltage. The value of the resistor determines the overcurrent threshold, and the device will shut down if the output current exceeds this threshold.
The EN (enable) pin on the UCC3818DTR is used to enable or disable the device. When the EN pin is pulled high, the device is enabled, and when it's pulled low, the device is disabled. This pin can be used to implement power sequencing or to turn off the device during standby modes.
UCC3818DTR datasheet
by Texas Instruments
