L6562
TRANSITION-MODE PFC CONTROLLER
1
■ ■
Features
REALISED IN BCD TECHNOLOGY TRANSITION-MODE CONTROL OF PFC PREREGULA...
L6562
TRANSITION-MODE PFC CONTROLLER
1
■ ■
Features
REALISED IN BCD TECHNOLOGY TRANSITION-MODE CONTROL OF PFC PRE
REGULATORS PROPRIETARY MULTIPLIER DESIGN FOR MINIMUM THD OF AC INPUT CURRENT VERY PRECISE ADJUSTABLE OUTPUT OVERVOLTAGE PROTECTION ULTRA-LOW (≤70µA) START-UP CURRENT LOW (≤4 mA) QUIESCENT CURRENT EXTENDED IC SUPPLY VOLTAGE RANGE ON-CHIP FILTER ON CURRENT SENSE DISABLE FUNCTION 1% (@ Tj = 25 °C) INTERNAL REFERENCE VOLTAGE -600/+800mA TOTEM POLE GATE DRIVER WITH UVLO PULL-DOWN AND VOLTAGE CLAMP DIP-8/SO-8 PACKAGES ECOPACK® PFC PRE-
REGULATORS FOR: – IEC61000-3-2 COMPLIANT SMPS
Figure 1. Packages
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DIP-8
SO-8
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Table 1. Order Codes
Part Number L6562N L6562D L6562DTR Package DIP-8 SO-8 Tape & Reel
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DESKTOP PC, MONITOR) UP TO 300W – HI-END AC-DC ADAPTER/CHARGER – ENTRY LEVEL SERVER & WEB SERVER
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2
Description
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1.1 APPLICATIONS
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(TV,
The L6562 is a current-mode PFC controller operating in Transition Mode (TM). Pin-to-pin compatible with the predecessor L6561, it offers improved performance.
Figure 2. Block Diagram
COMP 2 1 INV + 2.5V 5pF VCC MULTIPLIER AND THD OPTIMIZER 40K MULT 3 4 CS
VOLTAGE
REGULATOR
OVERVOLTAGE DETECTION
-
+
8 VCC 25 V R1 + R2 VREF2 ZERO CURRENT DETECTOR + 2.1 V 1.6 V STARTER
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INTERNAL SUPPLY 7V R S UVLO Starter stop DRIVER Q 15 V
7 GD
DISABLE 6 GND 5 ZCD
November 2005
Rev. 8 1/16
L6562
2 Description (continued) The highly linear multiplier includes a special circuit, able to reduce AC in...