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MP174 データシート(PDF) 13 Page - Monolithic Power Systems

部品番号 MP174
部品情報  700V Non-Isolated Off-Line Regulator, Up to 400mA Output Current
PDF  22 Pages
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メーカー  MPS [Monolithic Power Systems]
ホームページ  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP174 データシート(HTML) 13 Page - Monolithic Power Systems

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MP174 – NON-ISOLATED OFF-LINE REGULATOR
MP174 Rev. 1.01
www.MonolithicPower.com
13
8/18/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
Open-Loop Detection
If VFB is less than 0.5V, the IC will stop switching
and a re-start cycle will begin. During Soft-Start,
the open loop detection is blanked.
Leading-Edge Blanking
An internal leading-edge blanking (LEB) unit
avoids premature switching pulse termination
due to turn on spike. Turn on spike is caused by
parasitic capacitance and reverse recovery of
freewheeling diode. During the blanking time, the
current comparator is disabled and can not turn
off the external MOSFET. Figure 5shows the
leading-edge blanking.
ILIMIT
350ns
IDS
t
Figure 5: Leading-Edge Blanking



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