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MP2380DN Datasheet(PDF) 9 Page - Monolithic Power Systems |
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MP2380DN Datasheet(HTML) 9 Page - Monolithic Power Systems |
9 / 11 page MP2380 – 5A, 21V, 600KHz STEP-DOWN CONVERTER MP2380 Rev.1.2 www.MonolithicPower.com 9 5/26/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 MPS. All Rights Reserved. PCB Layout Guide PCB layout is very important to achieve stable operation. Please follow these guidelines and take Figure3 and 4 for references. 1) Keep the path of switching current short and minimize the loop area formed by Input cap, high-side MOSFET and schottky diode. 2) Keep the connection of schottky diode between SW pin and input power ground as short and wide as possible. 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. For single layer PCB, exposed pad should not be soldered. Figure 3—PCB Layout for Single Layer Top Layer Bottom Layer Figure 4—PCB Layout for Double Layers |
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