TLS1242, TLS1244

CURRENT-MODE PWM CONTROLLER

WITH POWER-FACTOR CORRECTOR

SLVS161 – MAY 1997

3

POST OFFICE BOX 655303

POST OFFICE BOX 1443

Terminal Functions

TERMINAL

DESCRIPTION

NAME

NO.

DESCRIPTION

AO

12

Voltage amplifier output for frequency compensation

CAO

8

Current amplifier output for PFC

COMP

1

Error amplifier output for frequency compensation

CT

4

Oscillator timing control

FB

2

Error amplifier inverting input for PWM

GND

6

Control section ground

IAC

14

Current multiplier input

ISENS1

3

Input from current-sense device of PWM, connected to current-sense comparator

ISENS2

7

Input from current sense device of PFC, connected to current amplifier

MULT

9

Multiplier output

OUT1

18

Totem-pole output for PWM

OUT2

16

Totem-pole output for PFC

PGND

17

Output section ground

PKLIM

15

Peak current limit for PFC

REF

20

Output for the 5 V reference

RMS

13

Input for PFC rms line compensation

RT

5

Oscillator charge current control

SYNC

10

External synchronous signal input pin

VCC

19

Positive supply

VSENSE

11

Voltage amplifier inverting input for PFC

absolute maximum ratings over operating free-air temperature (unless otherwise noted)

Self-limiting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Analog input voltage range at FB, ISENS, VSENSE, RMS and PKLIM

0.3 V to 6.3 V

. . . . . . . . . . . . . . . . . . . .

Voltage at OUT1 and OUT2

30 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TBD

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Amplifier output sink current

10 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation

See dissipation rating table

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0

°C to 70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NOTE 1: All voltages are with respect to GND. Maximum package power dissipation limits must be observed.

DISSIPATION RATING TABLE

PACKAGE

TA ≤ 25°C

POWER RATING

DERATING FACTOR

ABOVE TA = 25°C

TA = 70°C

POWER RATING

TA = 85°C

POWER RATING

N

1874 mW

15 mW/

°C

1200 mW

975 mW

DW

1430 mW

11.4 mW/

°C

915 mW

744 mW