CS2 datasheet(30/56 Pages) FUJITSU

부품명	CS2

상세설명	2ch DC/DC converter IC with PFM/ PWM synchronous rectification

PDF	56 Pages

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제조업체	FUJITSU [fujitsu semiconductor]

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30 / 56 page

MB39A214A

Limitation : development tool vendor use only

FUJITSU SEMICONDUCTOR CONFIDENTIAL

DS405-00007-1v0-E

The over current limit value is affected by ILIM pin source current and over current detection offset voltage

in the IC except for the on resistance of the low-side FET and the inductor value. The variation of dropped

over current limit value caused by IC characteristics is calculated by the following formula.

10-7

RLIM + 0.03

ΔILIM =

RON_Sync

ΔILIM

: The variation of dropped over current limit value [A]

RLIM

: Over current limitation value setting resistor [Ω]

RON_Sync

: ON resistance of low-side FET [Ω]

ILIM

ILIM’

The over current detection value needs to set a sufficient margin against the maximum load current.

Inductor current

Dropped over current limit value due to

IC's characteristics

Time

Over current limit value

ΔILIM

CS2 데이터시트(PDF) 30 Page - fujitsu semiconductor