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MP28255 데이터시트(PDF) 13 Page - Monolithic Power Systems

부품명 MP28255
상세설명  21V, 4A, 500kHz Synchronous Step-down Converter
PDF  14 Pages
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제조업체  MPS [Monolithic Power Systems]
홈페이지  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP28255 데이터시트(HTML) 13 Page - Monolithic Power Systems

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MP28255 – 4A, 21V, SYNCHRONOUS STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
MP28255 Rev. 1.01
www.MonolithicPower.com
13
3/11/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
Duty cycle is high: D=
IN
OUT
V
V
>65%
In this case, an external BST diode is
recommended from the VCC pin to BST pin, as
shown in Figure 8
MP28255
Figure 8—Add Optional External Bootstrap
Diode to Enhance Efficiency
The recommended external BST diode is IN4148,
and the BST cap is 0.1~1µF.



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