L6562N

L6562 TRANSITION-MODE PFC CONTROLLER 1 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Features Figure 1. Packages REALISED IN BCD TECHNOLOGY TRANSITION-MODE CONTROL OF PFC PREREGULATORS 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® 1.1 APPLICATIONS ■ PFC PRE-REGULATORS FOR: – IEC61000-3-2 COMPLIANT SMPS (TV, SO-8 DIP-8 Table 1. Order Codes Part Number Package L6562N DIP-8 L6562D SO-8 L6562DTR Tape & Reel DESKTOP PC, MONITOR) UP TO 300W – HI-END AC-DC ADAPTER/CHARGER – ENTRY LEVEL SERVER & WEB SERVER 2 Description 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 MULT 2 3 CS 4 1 INV - MULTIPLIER AND THD OPTIMIZER + 40K 2.5V VOLTAGE OVERVOLTAGE DETECTION REGULATOR 5pF + - VCC 8 VCC INTERNAL R SUPPLY 7V 25 V 15 V Q S R1 7 GD + R2 VREF2 DRIVER UVLO - Starter stop ZERO CURRENT DETECTOR + 2.1 V 1.6 V STARTER - DISABLE 6 GND November 2005 5 ZCD Rev. 8 1/16 L6562 2 Description (continued) The highly linear multiplier includes a special circuit, able to reduce AC input current distortion, that allows wide-range-mains operation with an extremely low THD, even over a large load range. The output voltage is controlled by means of a voltage-mode error amplifier and a precise (1% @Tj = 25°C) internal voltage reference. The device features extremely low consumption (≤70 µA before start-up and