MP1472 – 2A, 18V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
MP1472 Rev. 1.0 www.MonolithicPower.com 12
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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 5 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 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) 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.
MP1472 Typical Application Circuit
Top Layer Bottom Layer
Figure 5—MP1472 Typical Application Circuit and PCB Layout Guide
