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SG6902SZ PDF预览

SG6902SZ

更新时间： 2024-10-29 03:32:27
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 稳压器开关式稳压器或控制器电源电路开关式控制器功率因数校正光电二极管
页数 文件大小 规格书
22页 851K
描述
Green-Mode PFC / Flyback-PWM Controller

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中文翻译

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SG6902SZ 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：0.300 INCH, ROHS COMPLIANT, MS-013AC, SOP-20
针数：20Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.83Is Samacsys：N
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 V
JESD-30 代码：R-PDSO-G20JESD-609代码：e3
长度：13 mm湿度敏感等级：3
功能数量：1端子数量：20
最高工作温度：85 °C最低工作温度：-30 °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峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：2.65 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端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：7.5 mmBase Number Matches：1

SG6902SZ 数据手册

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Product Specification  
Green-Mode PFC / Flyback-PWM Controller  
SG6902  
The  
patented  
interleave-switching  
feature  
FEATURES  
synchronizes the PFC and PWM stages and reduces  
switching noise. At light loads, the switching  
frequency is continuously decreased to reduce power  
consumption. If output loading is further reduced, the  
PFC stage is turned off to further reduce power  
consumption.  
„
„
„
„
„
Green-mode PFC and PWM operation  
No switching of PFC at light loads saves power  
Low start-up and operating current  
Innovative switching-charge multiplier-divider  
Multi-vector control for improved PFC output  
transient response  
For PFC stage, the proprietary multi-vector control  
scheme provides a fast transient response in a  
low-bandwidth PFC loop, in which the overshoot and  
undershoot of the PFC voltage are clamped. If the  
feedback loop is broken, the SG6902 shuts off PFC to  
prevent extra-high voltage on output. Programmable  
two-level output voltage control reduces the PFC  
output voltage at low line input to increase the  
efficiency of the power supply.  
„
„
„
„
„
„
„
„
Interleaved PFC/PWM switching  
Programmable two-level PFC output voltage  
Average-current-mode control for PFC  
Cycle-by-cycle current limiting for PFC/PWM  
PFC over-voltage and under-voltage protections  
PFC and PWM feedback open-loop protection  
Brownout protection  
Over-temperature protection  
For the flyback PWM, the synchronized slope  
compensation ensures the stability of the current loop  
APPLICATIONS  
„
Switching Power Supplies with Active PFC  
under  
continuous-conduction-mode  
operation.  
„
High-Power Adaptors  
Built-in line-voltage compensation maintains  
a
constant output power limit. Hiccup operation during  
output overloading is also guaranteed.  
DESCRIPTION  
The highly integrated SG6902 is designed for power  
supplies with boost PFC and Flyback PWM. It  
requires very few external components to achieve  
green-mode operation and versatile protections. It is  
available in a 20-pin SOP package.  
In addition, SG6902 provides protection functions,  
such as brownout and RI pin open/short protections.  
TYPICAL APPLICATION  
© System General Corp.  
Version 1.3.1 (IAO33.0022.B3)  
- 1 -  
www.sg.com.tw • www.fairchildsemi.com  
September, 2007  
1234567...22

中文翻译

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