TL494(2015) Просмотр технического описания (PDF) - Unisonic Technologies

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TL494
(Rev.:2015)

VOLTAGE MODE PWM CONTROL CIRCUIT

Unisonic Technologies 

TL494

 TEST CIRCUIT

LINEAR INTEGRATED CIRCUIT

Vcc=15V

TEST

INPUTS

12k

0.01 F

50k

12

2W 150

4 DEAD-TIME

Vcc

3 FEEDBACK

6 RT

5 CT

1

2

16 ERROR AMPLIFIER

C1 8

E1 9

C2 11

E2 10

15

13 OUTPUT CONTROL VREF OUTPUT 14

GND

7

2W 150

OUTPUT 1

OUTPUT 2

VOLTAGE at C1

VOLTAGE at C2

VOLTAGE at CT

DEAD-TIME

THRESHOLD VOLTAGE

CONTROL INPUT

FEEDBACK

THRESHOLD VOLTAGE

FIG 1. OPERATIONAL TEST CIRCUIT AND WAVEFORMS

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

6 of 8

QW-R103-004. J

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