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FREQ датащи(PDF) 28 Page - fujitsu semiconductor

номер детали FREQ
подробное описание детали  2ch DC/DC converter IC with PFM/ PWM synchronous rectification
PDF  56 Pages
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производитель  FUJITSU [fujitsu semiconductor]
домашняя страница  
Logo FUJITSU - fujitsu semiconductor

FREQ датащи(HTML) 28 Page - fujitsu semiconductor

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MB39A214A
Limitation : development tool vendor use only
FUJITSU SEMICONDUCTOR CONFIDENTIAL
DS405-00007-1v0-E
Setting soft-start time
Calculate the soft-start time by the following formula.
ts = 7
105
CCS
ts
: Soft-start time [s] (time until output reaches 100%)
CCS : CS pin capacitor value [F]
Calculate the delay time until the soft-start activation by the following formula.
td = 43
CVB
td
: VB voltage delay time (at VIN = 12 V) [s]
CVB : VB pin capacitor value [F]
When activating the other in the state where a side channel has already been activated (UVLO release: VB
output already), the delay time is hardly generated.
ts1
td
ts2
EN1
EN2
VOUT1
VOUT2



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