L6562 Datasheet, PDF (1/16 Pages) STMicroelectronics – TRANSITION-MODE PFC CONTROLLER

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^®
1.1 APPLICATIONS
■ PFC PRE-REGULATORS FOR:
– IEC61000-3-2 COMPLIANT SMPS (TV,
Figure 2. Block Diagram
1
INV
-
+
2.5V
COMP
2
VOLTAGE
REGULATOR
OVERVOLTAGE
DETECTION
Figure 1. Packages
DIP-8
Table 1. Order Codes
Part Number
L6562N
L6562D
L6562DTR
SO-8
Package
DIP-8
SO-8
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 oper-
ating in Transition Mode (TM). Pin-to-pin compati-
ble with the predecessor L6561, it offers improved
performance.
MULT
3
MULTIPLIER AND
THD OPTIMIZER
CS
4
40K
5pF
-+
VCC
8
VCC
25 V
INTERNAL
SUPPLY 7V
R1
+
R2
-
VREF2
2.1 V
1.6 V
UVLO
ZERO CURRENT
DETECTOR
+
-
RQ
S
Starter
stop
15 V
DRIVER
7
GD
STARTER
November 2005
6
GND
5
ZCD
DISABLE
Rev. 8
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