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November 2013
?2010 Fairchild Semiconductor Corporation
 
www.fairchildsemi.com
FAN7930B " Rev. 1.0.3
 
FAN7930B
Critical Conduction Mode PFC Controller 
 
Features
?   Additional OVP Detection Pin 
?   V
IN
-Absent Detection 
?   Maximum Switching Frequency Limitation 
?   Internal Soft-Start and Startup without Overshoot 
?   Internal Total Harmonic Distortion (THD) Optimizer 
?   Precise Adjustable Output Over-Voltage Protection 
?   Open-Feedback Protection and Disable Function 
?   Zero Current Detector (ZCD) 
?   150 ?/SPAN>s Internal Startup Timer 
?   MOSFET Over-Current Protection (OCP) 
?   Under-Voltage Lockout with 3.5 V Hysteresis 
?   Low Startup and Operating Current 
?   Totem-Pole Output with High State Clamp 
?   +500/-800 mA Peak Gate Drive Current 
?   8-Pin, Small-Outline Package (SOP) 
Applications
?   Adapter 
?   Ballast 
?   LCD TV, CRT TV 
?   SMPS 
Description
The FAN7930B is an active power factor correction
(PFC)   controller   for   boost   PFC   applications   that
operate in critical conduction mode (CRM). It uses a
voltage-mode PWM that compares an internal ramp
signal with the error amplifier output to generate a
MOSFET turn-off signal. Because the voltage-mode
CRM PFC controller does not need rectified AC line
voltage information, it saves the power loss of an input
voltage sensing network necessary for a current-mode
CRM PFC controller.
FAN7930B   provides   over-voltage   protection   (OVP),
open-feedback    protection,    over-current    protection
(OCP),   input-voltage-absent   detection,   and   under-
voltage lockout protection (UVLO). The additional OVP
pin can be used to shut down the boost power stage
when output voltage exceeds OVP level due to the
resistors that are connected at INV pin are damaged.
The FAN7930B can be disabled if the INV pin voltage is
lower than 0.45 V and the operating current decreases
to a very low level. Using a new variable on-time control
method, total harmonic distortion (THD) is lower than in
conventional CRM boost PFC ICs.
Related Resources
AN-8035  Design Consideration for Boundary
Conduction Mode PFC Using FAN7930
 
 
 
 
 
 
Ordering Information
Part Number 
Operating
Temperature Range
Top Mark
Package
Packing
Method
FAN7930BMX_G 
-40 to +125癈
FAN7930BG
-Lead, Small-Outline Package (SOP)    Tape & Reel
 
 
 
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相关代理商/技术参数
FAN7930BMX 功能描述:功率因数校正 IC Critical Conduction Mode PFC Controller RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
FAN7930BMX_G 制造商:Fairchild Semiconductor Corporation 功能描述:IC PFC CTLR CRITICAL CONF 8-SOIC 制造商:Fairchild Semiconductor Corporation 功能描述:Power Factor Correction - PFC Critical Conduction Mode PFC Controller 制造商:Fairchild Semiconductor Corporation 功能描述:Critical Conduction Mode PFC Controller
FAN7930C 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:The FAN7930C is an active power factor correction(PFC) controller for boost PFC applications that operate in critical conduction mode(CRM).
FAN7930CM 功能描述:功率因数校正 IC Critical Conduction Mode PFC Controller RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
FAN7930CMX 功能描述:功率因数校正 IC Critical Conduction Mode PFC Controller RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
FAN7930CMX_G 制造商:Fairchild Semiconductor Corporation 功能描述:IC PFC CTLR CRITICAL CONF 8-SOIC 制造商:Fairchild Semiconductor Corporation 功能描述:Power Factor Correction - PFC Critical Conduction Mode PFC Controller 制造商:Fairchild Semiconductor Corporation 功能描述:Critical Conduction Mode PFC Controller
FAN7930DM 制造商:Fairchild Semiconductor Corporation 功能描述:PFC
FAN7930DMX 制造商:Fairchild Semiconductor Corporation 功能描述:PFC