参数资料
型号: FAN7930CM
厂商: Fairchild Semiconductor
文件页数: 3/22页
文件大小: 1725K
描述: IC PFC CTLR CRITICAL CONF 8-SOIC
标准包装: 95
模式: 临界传导(CRM)
频率 - 开关: 250kHz ~ 350kHz
电流 - 启动: 120µA
电源电压: 13 V ~ 20 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOP
包装: 管件
 
?2010 Fairchild Semiconductor Corporation
 
www.fairchildsemi.com
FAN7930C " Rev. 1.0.2
3
 
Pin Configuration
INV    RDY
CS
ZCD
FAN7930C
8-SOP
COMP
V
CC
OUT    GND
 
Figure 3.
Pin Configuration (Top View)
 
Pin Definitions
Pin #    Name   Description
1
INV
This pin is the inverting input of the error amplifier. The output voltage of the boost PFC converter
should be resistively divided to 2.5 V.
2
RDY
This pin is used to detect PFC output voltage reaching a pre-determined value. When output
voltage reaches 89% of rated output voltage, this pin is pulled HIGH, which is an (open-drain)
output type.
3
COMP
This pin is the output of the transconductance error amplifier. Components for the output voltage
compensation should be connected between this pin and GND.
4
CS
This pin is the input of the over-current protection comparator. The MOSFET current is sensed
using a sensing resistor and the resulting voltage is applied to this pin. An internal RC filter is
included to filter switching noise.
5
ZCD
This pin is the input of the zero-current detection (ZCD) block. If the voltage of this pin goes
higher than 1.5 V, then goes lower than 1.4 V, the MOSFET is turned on.
6
GND
This pin is used for the ground potential of all the pins. For proper operation, the signal ground
and the power ground should be separated.
7
OUT
This pin is the gate drive output. The peak sourcing and sinking current levels are +500 mA and
-800 mA, respectively. For proper operation, the stray inductance in the gate driving path must be
minimized.
8
V
CC
     This is the IC supply pin. IC current and MOSFET drive current are supplied using this pin.
 
 
 
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