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參數資料
型號: FAN9612MX
廠商: Fairchild Semiconductor
文件頁數: 17/36頁
文件大小: 1561K
描述: IC CTLR PFC DUAL BCM 16SOICN
標準包裝: 1
模式: 臨界傳導(BCM)
頻率 - 開關: 16.5kHz ~ 525kHz
電流 - 啟動: 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)
供應商設備封裝: 16-SOIC N
包裝: 標準包裝
其它名稱: FAN9612MXFSDKR
 
?2008 Fairchild Semiconductor Corporation
 
www.fairchildsemi.com
FAN9612 " Rev. 1.1.7
17
12. Bias Supply (V
DD
)
This is the main bias source for the FAN9612. The
operating voltage range is between 8 V and 18 V. The
V
DD
  voltage is monitored by the under-voltage lockout
(UVLO) circuit. At power-up, the V
DD
  voltage must
exceed   12.5 V   (?.5 V)   to   enable   operation.   The
FAN9612 stops operating when the V
DD
  voltage falls
below 7.5 V (?.5 V). See  PGND  pin  description  for 
important bypass information. 
13. Current-Sense Protection (CS1, CS2)
The FAN9612 uses independent over-current protection
for each of the power MOSFETs. The current-sense
thresholds at the CS1 and CS2 pins are approximately
0.2 V.   The   current   measurements   are   strictly   for
protection purposes and are not part of the control
algorithm. The pins can be directly connected to the
non-grounded   end   of   the   current-sense   resistors
because the usual R-C filters of the leading-edge
current spike are integrated in the IC.
 
Figure 26. Current-Sense Protection Circuits
The time constant of the internal filter is approximately:
ns
pF
k
130
5
27
=
?/DIV>
?/DIV>
=
?/DIV>
 
or
MHz
pF
k
P
2
.
1
5
27
2
1
=
?/DIV>
?/DIV>
?/DIV>
?/DIV>
=
?/DIV>
?/DIV>
 
(4)
 
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