MP2207 – 16V, 4A, 1.3MHz SYNCHRONOUS STEP-DOWN CONVERTER

MP2207 Rev. 0.92

www.MonolithicPower.com

11

9/1/2010

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

Preliminary Specifications Subject to Change

© 2010 MPS. All Rights Reserved.

PCB LAYOUT

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 as

follows. Here, the typical application circuit is

taken as an example to illustrate the key layout

rules should be followed.

1) For MP2207, a PCB layout with >=4 layers is

recommended.

2) The high current paths (GND, IN and SW)

should be placed very close to the device with

short, direct and wide traces.

3) Two input ceramic capacitors (10μF~22μF)

are strongly recommended to be placed on both

sides of the MP2207DQ package and keep them

as close as possible to the “IN” and “GND” pins.

4) A RC low pass filter is recommended for VCC

supply. The Vcc decoupling capacitor must be

placed as close as possible to “VCC” pin and

“GND” pin.

5) The external feedback resistors shall be

placed next to the FB pin. Keep the FB trace as

short as possible.

6) Keep the switching node SW short and away

from the feedback network.

Top Layer

Inner Layer 2

Inner Layer 1

Bottom Layer

Figure 2 —Recommended PCB Layout