MP2372DN datasheet(11/13 Pages) MPS

tên linh kiện	MP2372DN

Giải thích chi tiết về linh kiện	3A, 28V, 925KHz Step-Down Converter

PDF	13 Pages

Scroll/Zoom	100%

nhà sản xuất	MPS [Monolithic Power Systems]

Trang chủ	http://www.monolithicpower.com

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11 / 13 page

MP2372 – 3A, 28V, 925KHZ STEP-DOWN CONVERTER

MP2372 Rev. 0.92

www.MonolithicPower.com

12/22/2009

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

External Bootstrap Diode

Enough voltage of the bootstrap capacitor can

enhance the efficiency of the regulator and

increase the output capacity. The MP2372 can’t

output 3.3V/3A when the input voltage is only

about 5V. An External charge circuit shown in

Figure 4 can be a solution, and the applicable

conditions of the circuit are:

VIN is only about 5V, and VOUT is 3.3V or less

The Duty cycle is high: D= O

>60%

The external bootstrap diode circuit can’t be

applied when VIN>6V

Figure 4—External Bootstrap Diode Circuit

D1 integrates two diodes in SOT-523 package

such as BAV199T which will not increase the

PCB size and the cost. The additional capacitor

C1 can be only 10nF.

MP2372DN bảng dữ liệu(PDF) 11 Page - Monolithic Power Systems