參數(shù)資料
型號(hào): FAN9612MX
廠商: Fairchild Semiconductor
文件頁(yè)數(shù): 23/36頁(yè)
文件大?。?/td> 1561K
描述: IC CTLR PFC DUAL BCM 16SOICN
標(biāo)準(zhǔn)包裝: 1
模式: 臨界傳導(dǎo)(BCM)
頻率 - 開(kāi)關(guān): 16.5kHz ~ 525kHz
電流 - 啟動(dòng): 80µA
電源電壓: 9 V ~ 18 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC N
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: FAN9612MXFSDKR
 
?2008 Fairchild Semiconductor Corporation
 
www.fairchildsemi.com
FAN9612 " Rev. 1.1.7
23
 
Figure 33. Interleaved BCM PFC Schematic Using FAN9612
 
 
Step 2
: Estimated Conversion Efficiency
Use the estimated full-load power conversion efficiency.
Typical value for an interleaved BCP PFC converter is in
the 0.92 to 0.98 range. The efficiency is in the lower half
of the range for low-power applications. Using state-of-
the-art semiconductors, good quality ferrite inductors
and   selecting   lower   limit   for   minimum   switching
frequency   positively   impacts   the   efficiency   of   the
system. In general, the value of 0.95 can be used
unless a more accurate power budget is available.
 
Step 3
: Maximum Output Power per
Channel
2
P
1.2
P
OUT
CH
MAX,
?/DIV>
=
 
(6)
A margin of 20% has been added to the nominal output
power    to    cover    reference    inaccuracy,    internal
component   tolerances,   inductance   mismatch,   and
current-sense   resistor   variation   to   the   per-channel
power rating.
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