TEA2262

SWITCH MODE POWER SUPPLY CONTROLLER

April 1996

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IS

IN

GND

GND

E

S

SECONDARY PULSES INPUT

GROUND

GROUND

ERROR AMPLIFIER INPUT (INVERTING)

ERROR AMPLIFIER OUTPUT

OVERLOAD INTEGRATION CAPACITOR

POWER SUPPLY

POSITIVE OUTPUT STAGE SUPPLY

POWER OUTPUT

GROUND

GROUND

OSCILLATOR RESISTOR

OSCILLATOR CAPACITOR

SOFT-START CAPACITOR

V

V

OUT

GND

GND

C0

C1

R0

CC

max.

I

C2

TRANSFORMER DEMAGNETIZATION

SENSING INPUT

POWER TRANSISTOR

CURRENT LIMITATION INPUT

PIN CONNECTIONS

DIP16

(Plastic Package)

ORDER CODE : TEA2262

.

POSITIVE AND NEGATIVE OUTPUT CUR-

RENT UP TO 1A

.

LOW START-UP CURRENT

.

DIRECT DRIVE OF THE MOS POWER

TRANSISTOR

.

TWO LEVELS TRANSISTOR CURRENT LIMI-

TATION

.

DOUBLE PULSE SUPPRESSION

.

SOFT-STARTING

.

UNDER AND OVERVOLTAGE LOCK-OUT

.

AUTOMATIC STAND-BY MODE

.

LARGE POWER RANGE CAPABILITY IN

STAND-BY (Burst mode)

.

INTERNAL PWM SIGNAL GENERATOR

DESCRIPTION

The TEA2262 is a monolithic integrated circuit for

the use in primary part of an off-line switching mode

power supply using a MOS power transistor.

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 TEA2262 very flexible and

easy to use. This is particularly true for TV receiv-

ers where the IC provides an attractive and low cost

solution (no need of stand-by auxiliary power sup-

ply).

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