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L6562A の電気的特性と機能

L6562AのメーカーはSTMicroelectronicsです、この部品の機能は「Transition-mode PFC controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 L6562A
部品説明 Transition-mode PFC controller
メーカ STMicroelectronics
ロゴ STMicroelectronics ロゴ 




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L6562A Datasheet, L6562A PDF,ピン配置, 機能
L6562A
Features
Proprietary multiplier design for minimum thd
Very accurate adjustable output overvoltage
protection
Ultra-low (30µA) Start-up current
Low (2.5mA) quiescent current
Digital leading-edge blanking on current sense
Disable function on E/A input
1.4% (@ TJ = 25 °C) internal reference voltage
-600/+800mA totem pole gate driver with active
pull-down during UVLO and voltage clamp
DIP-8/SO-8 packages
www.DataSheet4U.com
Figure 1. Block diagram
Transition-mode PFC controller
Preliminary Data
DIP-8
SO-8
Applications
PFC pre-regulators for:
IEC61000-3-2 compliant SMPS (Flat TV,
desktop PC, games)
HI-END AC-DC adapter/charger up to 400W
Electronic ballast
Entry level server & web server
March 2007
Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
1/20
www.st.com
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L6562A pdf, ピン配列
L6562A
1 Description
Description
The L6562A is a current-mode PFC controller operating in Transition Mode (TM). Coming
with the same pin-out as its predecessors L6561 and L6562, it offers improved performance.
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 an accurate
(1.4% @TJ = 25°C) internal voltage reference.
The device features extremely low consumption (60µA max. before start-up and <5 mA
operating) and includes a disable function suitable for IC remote ON/OFF, which makes it
easier to comply with energy saving requirements (Blue Angel, EnergyStar, Energy2000,
etc.).
An effective two-step OVP enables to safely handle overvoltages either occurring at start-up
or resulting from load disconnection.
The totem-pole output stage, capable of 600 mA source and 800 mA sink current, is suitable
to drive high current MOSFETs or IGBTs. This, combined with the other features and the
possibility to operate with the proprietary Fixed-Off-Time control, makes the device an
excellent low-cost solution for EN61000-3-2 compliant SMPS in excess of 350W.
3/20


3Pages


L6562A 電子部品, 半導体
Electrical characteristics
5 Electrical characteristics
L6562A
Table 4. Electrical characteristics
( -25°C < TJ < +125°C, VCC = 12V, Co = 1nF; unless otherwise specified)
Symbol
Parameter
Test condition
Min Typ Max Unit
Supply voltage
VCC
VccOn
VccOff
Hys
Operating range
Turn-on threshold
Turn-off threshold
Hysteresis
After turn-on
(1)
10.5 22
11.5 12.5 13.5
9.5 10 10.5
2.2 2.8
V
V
V
V
VZ Zener Voltage
ICC = 20mA
22 25 28 V
Supply current
Istart-up
Iq
ICC
Iq
Start-up current
Before turn-on, VCC = 11V
Quiescent current
After turn-on
Operating supply current @ 70kHz
Quiescent current
During OVP (either static or dynamic)
or VINV 150mV
30 60 µA
2.5 3.75 mA
3.5 5 mA
1.7 2.2 mA
Multiplier input
IMULT
VMULT
Input bias current
Linear operation range
VMULT = 0 to 4V
0 to 3
-1 µA
V
---------V----c--s------
V M U L T
Output max. slope
VMULT = 0 to 1V,
VCOMP = Upper clamp
1 1.1
V/V
K Gain (2)
VMULT = 1V, VCOMP= 4V,
0.32 0.38 0.44 V
Error amplifier
VINV
IINV
Gv
GB
Voltage feedback input
threshold
TJ = 25 °C
10.5V < VCC < 22V (1)
Line regulation
VCC = 10.5V to 22V
Input bias current
VINV = 0 to 3V
Voltage gain
Open loop
Gain-bandwidth product
2.465 2.5 2.535
V
2.44 2.56
2 5 mV
-1 µA
60 80
dB
1 MHz
ICOMP
Source current
Sink current
VCOMP = 4V, VINV = 2.4V
VCOMP = 4V, VINV = 2.6V
-2 -3.5
2.5 4.5
-5 mA
mA
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共有リンク

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