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參數(shù)資料
型號: L6566BTR
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: 0.8 A POWER FACTOR CONTROLLER, 900 kHz SWITCHING FREQ-MAX, PDSO16
封裝: LEAD FREE, SOP-16
文件頁數(shù): 1/51頁
文件大?。?/td> 624K
代理商: L6566BTR
December 2008
Rev 3
1/51
51
L6566B
Multi-mode controller for SMPS
Features
Selectable multi-mode operation:
fixed frequency or quasi-resonant
On-board 700 V high-voltage start-up
Advanced light load management
Low quiescent current (< 3 mA)
Adaptive UVLO
Line feedforward for constant power capability
vs mains voltage
Pulse-by-pulse OCP, shutdown on overload
(latched or autorestart)
Transformer saturation detection
Programmable frequency modulation for EMI
reduction
Latched or autorestart OVP
Brownout protection
-600/+800 mA totem pole gate driver with
active pull-down during UVLO
SO16N package
Applications
Hi-end AC-DC adapter/charger
LCD TV/monitor, PDP
digital consumer, IT equipment
single-stage PFC
SO16N
Figure 1.
Block diagram
+
-
+
-
ZERO CURRENT
DETECTOR
50 mV
100 mV
VCC
7
ZCD
CS
GD
4
11
3
1.5 V
+
-
+
-
4.5V
DIS
8
LATCH
LEB
14V
Reference
voltages
5
VCC
10
Internal supply
VREF
UVLO
VOLTAGE
REGULATOR
&
ADAPTIVE UVLO
FMOD
6
IC_LATCH
DISABLE
UVLO
Q
12
+
-
+
-
0.450V
0.485V
AC_OK
16
13
AC_FAIL
UVLO_SHF
VCC
5.7V
1
HV
SOFT-START
&
FAULT MNGT
14
SS
OSC
MODE/SC
+-
OSCILLATOR
R
S
Q
MODE SELECTION
&
TURN-ON LOGIC
OVERVOLTAGE
PROTECTION
15 A
7.7V
OCP
PWM
TIME
OUT
TIME
OUT
+
-
Vth
BURST-MODE
OFF2
Icharge
Hiccup-mode
OCP logic
3V
400 uA
DRIVER
OCP2
+
-
6.4V
VCC
1mA
OVPL
OVP
OVPL
OVP
9
15
COMP
VFF
LOW CLAMP
&DISABLE
OFF2
LINE VOLTAGE
FEEDFORWARD
GND
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