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SG6905SZ PDF预览

SG6905SZ

更新时间: 2024-10-29 03:32:27
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 功率因数校正光电二极管控制器
页数 文件大小 规格书
21页 684K
描述
Green mode PFC/Flyback-PWM Controller

SG6905SZ 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SOP, SOP20,.4
针数:20Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.67模拟集成电路 - 其他类型:POWER FACTOR CONTROLLER
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:20 V最小输入电压:11 V
标称输入电压:15 VJESD-30 代码:R-PDSO-G20
长度:12.7505 mm功能数量:1
端子数量:20最高工作温度:85 °C
最低工作温度:-20 °C封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP20,.4
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
认证状态:Not Qualified座面最大高度:2.642 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BOOST最大切换频率:68 kHz
温度等级:OTHER端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
宽度:7.493 mmBase Number Matches:1

SG6905SZ 数据手册

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Product Specification  
Green mode PFC/Flyback-PWM Controller  
SG6905  
achieve versatile protections. It is available in a 20-pin  
SOP package.  
FEATURES  
Interleaved PFC/PWM switching  
Green mode PWM operation  
Low start-up and operating current  
Innovative switching charge multiplier-divider  
Multi-vector control for improved PFC output  
transient response  
The patented interleave-switching feature synchronizes  
the PFC and PWM stages and reduces switching noise.  
For PFC stage, the proprietary multi-vector control  
scheme provides  
a fast transient response in a  
Average-current-mode control for PFC  
PFC over-voltage and under-voltage protections  
PFC remote on/off Control  
PFC and PWM feedback open-loop protection  
Cycle-by-cycle current limiting for PFC/PWM  
Slope compensation for PWM  
Constant power limit for PWM  
Power-on sequence control  
Brownout protection  
Over temperature protection  
low-bandwidth PFC loop, in which the overshoot and  
undershoot of the PFC voltage are clamped. If the  
feedback loop is broken, the SG6905 will shut off PFC to  
prevent extra-high voltage on output.  
For the flyback PWM, the synchronized slope  
compensation ensures the stability of the current loop  
under continuous-conduction-mode operation. Built-in  
line-voltage  
compensation  
maintains  
constant  
output-power limit. Hiccup operation during output  
overloading is also guaranteed.  
APPLICATIONS  
During start-up, the RDY pin will be pulled low until the  
PFC output voltage reaches to the setting level. This  
signal can be used to control the second power stage for  
proper power on sequence.  
Switching Power Suppliers with Active PFC  
High-Power Adaptors  
SG6905 provides complete protection functions such as  
brownout protection and RI pin open/short.  
DESCRIPTION  
The highly integrated SG6905 is specially designed for  
power supplies with boost PFC and flyback PWM. It  
requires  
very  
few  
external  
components  
to  
TYPICAL APPLICATION  
© System General Corp.  
Version 1.1.1 (IAO33.0060.B1)  
- 1 -  
www.sg.com.t w • www.fairchildsemi.com  
September 27, 2007  

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