MP174 datasheet(13/22 Pages) MPS

部件名	MP174

功能描述	700V Non-Isolated Off-Line Regulator, Up to 400mA Output Current

PDF	22 Pages

Scroll/Zoom	100%

制造商	MPS [Monolithic Power Systems]

网页	http://www.monolithicpower.com

标志

13 / 22 page

MP174 – NON-ISOLATED OFF-LINE REGULATOR

MP174 Rev. 1.01

www.MonolithicPower.com

8/18/2016

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

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

Figure 5: Leading-Edge Blanking

MP174 数据表(PDF) 13 Page - Monolithic Power Systems