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PDF ( 数据手册 , 数据表 ) TEA-2261

零件编号 TEA-2261
描述 SWITCH MODE POWER SUPPLY CONTROLLER
制造商 ST Microelectronics
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TEA-2261 数据手册, 描述, 功能
TEA2260
TEA2261
SWITCH MODE POWER SUPPLY CONTROLLER
. POSITIVE AND NEGATIVE CURRENT UP TO
1.2A and – 2A
. LOW START-UP CURRENT
. DIRECT DRIVE OF THE POWER TRANSIS-
TOR
. TWO LEVELS TRANSISTOR CURRENT LIMI-
TATION
. DOUBLE PULSE SUPPRESSION
. SOFT-STARTING
. UNDER AND OVERVOLTAGE LOCK-OUT
. AUTOMATIC STAND-BY MODE RECOGNI-
TION
. LARGE POWER RANGE CAPABILITY IN
STAND-BY (Burst mode)
. INTERNAL PWM SIGNAL GENERATOR
DESCRIPTION
The TEA2260/61 is a monolithic integrated circuit
for the use in primary part of an off-line switching
mode power supply.
All functions required for SMPS control under nor-
mal operating, transient or abnormal conditions are
provided.
The capability of working according to the "master-
slave" concept, or according to the "primary regu-
lation" mode makes the TEA2260/61 very flexible
and easy to use. This is particularly true for TV
receivers where the IC provides an attractive and
low cost solution (no need of stand-by auxiliary
power supply). See application note AN376/0490
for detailed information.
PIN CONNECTIONS
BATWING DIP 16
(Plastic Package)
ORDER CODES : TEA2260 - TEA2261
TRANSFORMER DEMAGNETIZATION SENSING INPUT IS
SECONDARY PULSES INPUT IN
POWER TRANSISTOR CURRENT LIMITATION INPUT IMAX
GROUND GND
GROUND GND
ERROR AMPLIFIER INPUT (INVERTING)
E
ERROR AMPLIFIER OUTPUT
S
OVERLOAD INTEGRATION CAPACITOR C2
1
2
3
4
5
6
7
8
16 VCC POWER SUPPLY
15 V+ POSITIVE OUTPUT STAGE SUPPLY
14 OUT POWER OUTPUT
13 GND GROUND
12 GND GROUND
11 R0 OSCILLATOT RESISTOR
10 C0 OSCILLATOR CAPACITOR
9 C1 SOFT-START CAPACITOR
June 1992
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TEA-2261 pdf, 数据表
TEA2260 - TEA2261
TYPICAL APPLICATION (Master/slavearchitecture)
3.3
nF
22k
170 VAC
270 VAC
4.7k
1k P2
1nF
1k
2.2µ F
16V
4 x 1N4007
150µ F
385V
10
1W
22k
3W
39
1N4148
2.2 /0.5W
330µ F
25V
BA157
3
6
9
7
7 6 4 5 12 13 16 15
TEA2260/61
11 10 2 9
82k
330
1nF nF
8 3 14 1
1nF
330
nF
330
0.135 /1W
22k
2.2µ H
47µ F
SGSF
344
18
BZX85-3V0
2.7nF
1kV
Small signal secondary ground
Power primary ground
Secondary ground (isolated from mains)
POUT : 140W
f : 32kHz
100pF
1k
BY218-600
13
PLR811
20
19
12V
0.5A
470µ F
25V
100µ F
250V
14
BY218-100
17
22
BY218-100
21
1000µ F
25V
BC547C
25V
1A
1000µ F
25V
1.2nF
P1
47k
120k
2.2k
10k
75
k
135V
0.8A
7.5V
1A
Stand-by
control
220
16W
10µ F
16V
270
2465
TEA5170
37
560
pF
2%
81
47nF
1N4148
150pF
Sync.
input
100k
1%
6.8k
TV - SET SMPS (with TEA5170)
Input voltage range
170VAC – 270VAC
Input DC voltage range
210VDC – 370VDC
Output power in normal mode
25W < PO < 140W
Output power in stand by mode
2W < PO < 45W
Operating frequency
32 kHz
Efficiency at full load
> 80%
Efficiency in stand by mode
> 50%
Short circuit protected
Open load protected
Long duration overload protected
Complete shutdown after repetitive default detection
Load regulation (VDC = 310V)
Output 135V (± 0.18%) (I135 : 0.01A to 0.8A ; I25 = 1A)
Output 25V (± 2%)
(I135 : 0.8A ; I25 : 0.5A ––> 1A)
Line regulation
Output 135V (± 0.13%) (210V < VDC < 370V)
Output 25V (± 0.17%) (I135 : 0.8A ; I25 : 1A)
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