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FAN4803CSX-1 PDF预览

FAN4803CSX-1

更新时间: 2024-11-25 19:19:35
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 光电二极管
页数 文件大小 规格书
12页 131K
描述
Power Factor Controller With Post Regulator, Current-mode, 1A, 67kHz Switching Freq-Max, PDSO8, SOIC-8

FAN4803CSX-1 技术参数

生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP,针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.73
模拟集成电路 - 其他类型:POWER FACTOR CONTROLLER WITH POST REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:16.7 V
最小输入电压:9.6 V标称输入电压:15 V
JESD-30 代码:R-PDSO-G8长度:4.9 mm
功能数量:1端子数量:8
最高工作温度:70 °C最低工作温度:
最大输出电流:1 A封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE认证状态:Not Qualified
座面最大高度:1.75 mm表面贴装:YES
切换器配置:BOOST最大切换频率:67 kHz
温度等级:COMMERCIAL端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
宽度:3.9 mmBase Number Matches:1

FAN4803CSX-1 数据手册

 浏览型号FAN4803CSX-1的Datasheet PDF文件第2页浏览型号FAN4803CSX-1的Datasheet PDF文件第3页浏览型号FAN4803CSX-1的Datasheet PDF文件第4页浏览型号FAN4803CSX-1的Datasheet PDF文件第5页浏览型号FAN4803CSX-1的Datasheet PDF文件第6页浏览型号FAN4803CSX-1的Datasheet PDF文件第7页 
www.fairchildsemi.com  
FAN4803  
8-Pin PFC and PWM Controller Combo  
Features  
General Description  
• Internally synchronized PFC and PWM in one 8-pin IC  
• Patented one-pin voltage error amplifier with advanced  
input current shaping technique  
The FAN4803 is a space-saving controller for power factor  
corrected, switched mode power supplies that offers very  
low start-up and operating currents.  
• Peak or average current, continuous boost, leading edge  
PFC (Input Current Shaping Technology)  
• High efficiency trailing-edge current mode PWM  
• Low supply currents; start-up: 150µA typ., operating:  
2mA typ.  
• Synchronized leading and trailing edge modulation  
• Reduces ripple current in the storage capacitor between  
the PFC and PWM sections  
Power Factor Correction (PFC) offers the use of smaller, lower  
cost bulk capacitors, reduces power line loading and stress on  
the switching FETs, and results in a power supply fully compli-  
ant to IEC1000-3-2 specifications. The FAN4803 includes  
circuits for the implementation of a leading edge, average  
current “boost” type PFC and a trailing edge, PWM.  
• Overvoltage, UVLO, and brownout protection  
• PFC VCCOVP with PFC Soft Start  
The FAN4803-1’s PFC and PWM operate at the same  
frequency, 67kHz. The PFC frequency of the FAN4803-2 is  
automatically set at half that of the 134kHz PWM. This  
higher frequency allows the user to design with smaller  
PWM components while maintaining the optimum operating  
frequency for the PFC. An overvoltage comparator shuts  
down the PFC section in the event of a sudden decrease in  
load. The PFC section also includes peak current limiting for  
enhanced system reliability.  
Block Diagram  
7
V
CC  
V
PFC OFF  
COMP  
REF  
VEAO  
REF  
+
7V  
V
OVP  
4
CC  
+
17.5V  
16.2V  
GND  
COMP  
2
1
35µA  
M3  
R1  
–1  
M2  
M4  
PFC  
CONTROL  
LOGIC  
PFC OUT  
M1  
C1  
30pF  
M7  
LEADING  
EDGE PFC  
ONE PIN ERROR AMPLIFIER  
TRAILING  
EDGE PWM  
I
SENSE  
–1V  
+
COMP  
SOFT START  
3
–4  
PFC I  
LIMIT  
+
V
PFC/PWM UVLO  
CC  
V
REF  
OSCILLATOR  
PFC – 67kHz  
PWM – 134kHz  
DUTY CYCLE  
LIMIT  
26k  
V
DC  
5
6
PWM COMPARATOR  
COMP  
40k  
+
PWM  
CONTROL  
LOGIC  
PWM OUT  
8
1.2V  
COMP  
+
I
LIMIT  
M6  
DC I  
LIMIT  
1.5V  
+
REV. 1.2.0 6/21/01  

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