L6563_07 Datasheet, PDF (1/39 Pages) STMicroelectronics – Advanced transition-mode PFC controller

L6563
L6563A
Advanced transition-mode PFC controller
Features
■ Very precise adjustable output overvoltage
protection
■ Tracking boost function
■ Protection against feedback loop failure
(Latched shutdown)
■ Interface for cascaded converter's PWM
controller
■ Input voltage feedforward (1/V²)
■ Inductor saturation detection (L6563 only)
■ Remote ON/OFF control
■ Low (≤ 90µA) start-up current
■ 5mA max. quiescent current
■ 1.5% (@ T_J = 25°C) internal reference voltage
■ -600/+800 mA totem pole gate driver with
active pull-down during UVLO
■ SO14 package
SO-14
Applications
PFC pre-regulators for:
■ HI-END AC-DC adapter/charger
■ Desktop PC, server, WEB server
■ IEC61000-3-2 OR JEIDA-MITI compliant
SMPS, in excess of 350W
Table 1. Device summary
Part number
Package
L6563
SO-14
L6563TR
L6563A
L6563ATR
SO-14
SO-14
SO-14
Packaging
Tube
Tape & Reel
Tube
Tape & Reel
Figure 1. Block diagram
TBO
VCC
GND
ZCD
INV
COMP
MULT
VFF
1
2
3
5
TRACKING
BOOST
1/V²
Ideal diode
LINE VOLTAGE
6
1:1
CURRENT
MIRROR
-
+
2.5V
1:1
BUFFER
VOLTAGE
from REGULATOR
MULTIPLIER
FEEDFORWARD
Voltage
references
-+
1.7V
-+
4
LEADING-EDGE
CS
BLANKING
3V
VFF
Vbias
INDUCTOR
Q
(INTERNAL SUPPLY BUS)
SATURATION
VCC
DETECTION
14
( not in L6563A ) SAT
12
11
1.4V
0.7V
UVLO
R1 COMPARATOR
+
R2
-
VREF2
UVLO
ZERO CURRENT
DETECTOR
RQ
S
15 V
Driver
Starter
OFF
STARTER
13
GD
0.2V
0.26V
RUN
10
-
0.52V
0.6V
ON/OFF CONTROL
(BROWNOUT DETECTION)
DISABLE
9
PWM_STOP
SAT
LATCH
Vbias FEEDBACK
FAILURE
8
PROTECTION
PWM_LATCH
PFC_OK
7
2.5V
March 2007
Rev 4
1/39
www.st.com
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