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SA7527S Datasheet(PDF) 4 Page - Silan Microelectronics Joint-stock

Part # SA7527S
Description  POWER FACTOR CORRECTION CONTROLLER OF CRITICAL DUCTING
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Manufacturer  SILAN [Silan Microelectronics Joint-stock]
Direct Link  http://www.silan.com.cn
Logo SILAN - Silan Microelectronics Joint-stock

SA7527S Datasheet(HTML) 4 Page - Silan Microelectronics Joint-stock

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SA7527
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
REV:1.0
2005.07.22
Http: www.silan.com.cn
Page 4 of 8
PIN CONFIGURATIONS
PIN DESCRIPTIONS
Pin no.
Pin name
Description
1
INV
Inverting input of the error amplifier. The output of the boost
converter should be resistively divided to 2.5V and connected to this
pin.
2
EA_OUT
The output of the error amplifier. A feedback compensation network
is placed between this pin and the INV pin.
3
MULT
Input to the multiplier stage. The full-wave rectified AC voltage is
divided to less than 2V and is connected to this pin.
4
CS
Input of the PWM comparator. The MOSFET current is sensed by a
resistor and the resulting voltage is applied to this pin. An internal
R/C filter is included to reject any high frequency noise.
5
Idet
Zero current detection input.
6
GND
The ground potential of all the pins.
7
OUT
Gate driver output. The push pull output stage is able to drive the
Power MOSFET with peak current of 500mA.
8
VCC
Supply voltage of driver and control circuits.
ELECTRICAL CHARACTERISTICS CURVES
Figure 1. Error Amplifier Output Voltage
vs Current Sensing Threshold
Figure 2. Multiplier Input Voltage
vs Current Sensing Threshold
Vm
1=
1.
5V
Vm
1=
1.
0V
(To be continued)


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