SGS Thomson Microelectronics TEA2261, TEA2260 Datasheet
SWITCH MODE POWER SUPPLY CONTROLLER
.
POSITIVE AND NEGATIVE CURRENT UP TO
1.2A and – 2A
.
LOW START-UP CURR ENT
.
DIRECT DRIVE OF THE POWER TRANSISTOR
.
TWO LEVELS TRANSISTOR CURRENT LIMIT ATION
.
DOUBLE PULSE SUPPRE SS ION
.
SOFT-STARTING
.
UNDER AND OVER VOLTAGE LOCK-OUT
.
AUTOMATIC STAND-BY MODE RECOGNITION
.
LARGE POWER RANGE CAPABILITY IN
STAND-BY (B urs t mode)
.
INTERNAL PWM SIGNAL GENERATOR
TEA2260
TEA2261
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 normal operating, transient or abnormal conditions are
provided.
The capability of working according to the "masterslave" concept, or according to the "primary regulation" 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
I
MAX
GND
GND
C2
IS
IN
E
S
TRANSFORMER DEMAGNETIZATION SENSING INPUT
SECONDARY PULSES INPUT
POWER TRANSISTOR CURRENT LIMITATION INPUT
GROUND
GROUND
ERROR AMPLIFIER INPUT (INVERTING)
ERROR AMPLIFIER OUTPUT
OVERLOAD INTEGRATION CAPACITOR
BATWING DIP 16
(Plastic Package)
ORDER CODES : TEA2260 - TEA2261
1
2
3
4
5
6
7
8
V
16
15
14
13
12
11
10
9
POWER SUPPLY
CC
V+
POSITIVE OUTPUT STAGE SUPPLY
OUT
POWER OUTPUT
GND
GROUND
GND
GROUND
R0
OSCILLATOT RESISTOR
C0
OSCILLATOR CAPACITOR
C1
SOFT-START CAPACITOR
2261-01.EPS
June 1992
1/9
TEA2260 - TEA2261
SIMPLIFIED APPLICATION DIAGRAMS
Figure 1 : Master-slave Concept
R
MAINS
INPUT
P
C
V
CC
2
TEA2260/61
SLAVE
P : Output voltage adjustement in normal mode
1
P : Output voltage adjustement in stand-by
2
Figure 2 : Secondary Regulation (with optocoupler)
P
1
TEA5170
MASTER
PWM
Synchronization
AUDIO
OUTPUT
STAGE
SCANNING
DEVICE
VOLTAGE
REGULATOR
Power primary ground
Secondary ground (isolated from mains)
Muting
Control
Remote
Stand-by
Remote
Stand-by
µ P
V
CC
INFRA-RED
RECEIVER
2261-02.EPS
MAINS
INPUT
P : Output voltage adjustement
2/9
R
C
V
CC
TEA2260/61
AUDIO
OUTPUT
STAGE
P
SCANNING
DEVICE
VOLTAGE
REGULATOR
Power primary ground
Secondary ground (isolated from mains)
Muting
Control
Remote
Stand-by
µ P
V
CC
INFRA-RED
RECEIVER
2261-03.EPS
BLOCK DIAG RAM
TEA2260 - TEA2261
SV
7 16 15
ERROR AMPLIFLIER
6
E
T (60%)
ON(Max.)
SOFT-START
-
+
V
REF
2.49V
- 1
-
+
MODULATORS
+
-
CC
100
MODULATOR
LOGIC
AUTOMATIC
BURST
GENERATION
DEMAGNETIZATION
OSCILLATOR
SENSING
R
ABSOLUTE MAXIMUM RATINGS
INTERNAL
BIAS
V (2.49V)
REF
PRIMARY
PULSES
LOGIC
-
0.15V
V MONITORING
CC
7.4V 10.3V
REGULATION
PULSES
IS
+
SECONDARY
PULSE
IN
IS
CC
OVERVOLTAGE
PROTECTION
PROCESSOR
REPETITIVE
OVERLOAD
PROTECTION
45µ A
10µ A
15.7V
-
LOGIC
+
-
2.55V
C
2
+
POSITIVE
OUTPUT
STAGE
V
CC
NEGATIVE
OUTPUT
STAGE
CURRENT
LIMITATION
-
0.6V
+
+
-
0.9V
I
MAX
V +
GND
+ 1.2A
(Max.)
- 2A
(Max.)
14
OUT
131254381211 109
2261-04.EPS
Symbol Parameter Value Unit
V
CC
Power Supply V16-V4, 5, 12, 13 20 V
V+ Output Stage Power Supply V15-V4, 5, 12, 13 20 V
+ Positive Output Current (source current) 1.5 A
I
OUT
- Negative Output Current (sink current) 2.5 A
I
OUT
T
T
stg
Operating Junction Temperature 150
j
Storage Temperature Range -40, +150
THERMAL D ATA
R
th (j-c)
R
th (j-a)
* Soldered on a 35µm, 40cm2 board copper area.
Junction-case Thermal Resistance 11
Junction-ambient Thermal Resistance 45
MAXIMUM POWER DISSIPATION
P (W)
tot
4
3
o
2
1
45 C/W
o
T ( C)
AMB
o
C/W
o
C/W
o
C
o
C
2261-01.TBL
2261-02.TBL
50 100 1500
2261-05.EPS
3/9
Loading...