參數(shù)資料
型號(hào)： R2A20111SPW0
廠商： Renesas Technology Corp.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Power Factor Correction Controller IC
中文描述： 功率因數(shù)校正控制芯片
文件頁(yè)數(shù)： 20/41頁(yè)
文件大?。?/td> 310K
代理商： R2A20111SPW0
R2A20111SP/DD
REJ03F0231-0100 Rev.1.00 Mar 28, 2007
Page 20 of 40
5. FB Pin Function
The FB pin is a feedback input for the PFC output voltage. This pin is applied to voltage divided PFC output with
resistors. The PFC output voltage is controlled so that the voltage on FB becomes 2.5 V. The FB pin function provides
protection against abnormal PFC output voltages. The protective functions include overvoltage detection and low-
voltage detection. These functions do not operate when VREF voltage is lower than 4 V as UVL operation and
shutdown state.
680k
FB
SS
PFC output
voltage
0.47
μ
VREF
25
μ
A
VREF
FB Control
EO
0.033
μ
820k
B+OVP
FB-Low
2.688V
2.638V
2.5V
V-Amp
0.50V
0.52V
14
1
5
15
Gate Driver
+/– 1.0A(PEAK)
To
Power MOS FET
gate
OUT
Figure 8 Internal Circuits Connected to the FB Pin
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
R2A20112 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Renesas Low Noise & High Efficiency PFC Control IC
R2A20112ASP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Critical Conduction Mode Interleaved PFC Control IC
R2A20112ASP#W0 制造商:Renesas Electronics Corporation 功能描述:PFC IC - Tape and Reel 制造商:Renesas Electronics Corporation 功能描述:IC PFC CTRLR 24V 16SOP
R2A20112DD 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Critical Conduction Mode Interleaved PFC Control IC
R2A20112SP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Critical Conduction Mode Interleaved PFC Control IC
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