RY8310

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30V 1.2A 1.4MHz Synchronous Step-Down Regulator

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PC Board Layout Consideration

PCB layout is very important to achieve stable operation. It is highly recommended to duplicate EVB layout for

optimum performance. If change is necessary, please follow these guidelines for reference.

1. Keep the path of switching current short and minimize the loop area formed by Input capacitor, high-side

MOSFET and low-side MOSFET.

2. Bypass ceramic capacitors are suggested to be put close to the VIN Pin.

3. Ensure all feedback connections are short and direct. Place the feedback resistors and compensation

components as close to the chip as possible.

4. VOUT, SW away from sensitive analog areas such as FB.

5. Connect IN, SW, and especially GND respectively to a large copper area to cool the chip to improve thermal

performance and long-term reliability.

Top Layer

Bottom Layer

Sample Board Layout