POWER FACTOR CORRECTOR
Description
UNISONIC TECHNOLOGIES CO.
, LTD 8561
Preliminary
CMOS IC
POWER FACTOR CORRECTOR
DESCRIPTION
The UTC 8561 is a Power Factor Corrector, which can work in wide input voltage range applications (from 85V ~ 265V) with an excellent THD.
It has very low start up current (about 50 uA) and a disable function on the ZCD pin, which is designed to keep lower current consumption in stand by mode.
The device is operating in transition mode, and is able to drive a Power MOS or IGBT with a ± 400mA current for sourcing and sinking.
FEATURES
* 1% Precision (@ TJ = 25°C) Internal Reference Voltage * Output Overvoltage Protection * Very Low Power Start-Up Current * Very Low Operating Supply Current * Current Sense Filter On Chip * Disable Function (with ZCD Pin) * Transition Mode Operation * Gate Driving Current: ± 400mA
ORDERING INFORMATION
Ordering Number Lead Free Plating Halogen Free 8561L-D08-T 8561G-D08-T Package DIP-8 Packing Tube
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DataSheet4U.
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www.
unisonic.
com.
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, Ltd
1 of 6
QW-R502-444.
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8561
PIN CONFIGURATION
Preliminary
CMOS IC
INV COMP MULT CS
1 2 3 4
8 7 6 5
Vcc GD GND ZCD
PIN DESCRIPTION
PIN NAME INV COMP MULT CS ZCD GND GD VCC DESCRIPTION Inverting input of the error amplifier.
Output of the error amplifier.
Input of the multiplier stage.
Input of the current sense stage.
Input of the zero current detection.
Ground.
Gate driver output.
Voltage supply.
PIN NO 1 2 3 4 5 6 7 8
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DataSheet4U.
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UNISONIC TECHNOLOGIES CO.
, LTD
www.
unisonic.
com.
tw
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QW-R502-444.
a
8561
BLOCK DIAGRAM
COMP 2 MULT 3
Preliminary
CMOS IC
20V 8 VCC R1 OVER-VOLTAGE DETECTION INV 1 2.
5V + MULTIPLIER INTERNAL SUPPLY 7V 40K 5pF ZERO CURRENT DETECTOR + STARTER DISABLE + R Q D R I V E R VOLTAGE REGULATOR VCC UVLO VREF2 R2
CS 4
-
ZCD 5
7 GD
2.
1V 1.
6V
S
6 GND
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DataSheet4U.
com
UNISONIC TECHNOLOGIES CO.
, LTD
www.
unisonic.
com.
tw
3 of 6
QW-R502-444.
a
8561
PARAMETER Analog Inputs & Outputs Current Sense I...
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