MP2136 – 2.5V TO 6V INPUT, 2MHz, 1A SYNCHRONOUS STEP-DOWN CONVERTER

MP2136 Rev. 0.9

www.MonolithicPower.com

10

8/23/2010

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PCB LAYOUT GUIDE

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 and take Figure 2 for reference.

1) Keep the path of switching current short and

minimize the loop area formed by Input cap,

high-side MOSFET and low-side MOSFET.

2) Bypass ceramic capacitors are suggested to

2) Ensure all feedback connections are short

and direct. Place the feedback resistors as

close to the chip as possible.

4) Route 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

Figure 2—MP2136 Suggested Layout