UTCTL494 Просмотр технического описания (PDF) - Unisonic Technologies

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UTCTL494

VOLTAGE MODE PWM CONTROL CIRCUIT

Unisonic Technologies 

UTC TL494

LINEAR INTEGRATED CIRCUIT

ERROR

1

AMPLIFIER

Vin

2

FEEDBACK

TERMINAL

16

Vref 15

ERROR

AMPLIFIER

FIG 2. AMPLIFIER CHARACTERISTICS

Vcc

EACH

OUTPUT Q

CIRCUIT

68Ω

15pF

90%

10%

tr

90%

Vc

10%

tf

FIG. 3 COMMON-EMITTER CONFIGURATION

PIN CONFIGURATIONS

NONINV

INPUT

1

INV INPUT 2

FEEDBACK 3

DEAD-TIME

CONTROL

4

CT

5

RT

6

GND

7

C1

8

EACH

Vcc

OUTPUT

90%

CIRCUIT Q

10%

68Ω

15pF

tr

90%

Ve

10%

tf

FIG. 4 EMITTER -FOLLOWER CONFIGURATION

16

NONINV

INPUT

15 INV INPUT

14 Vref

13

OUTPUT

CONTROL

12 Vcc

11 C2

10 E2

9

E1

UTC UNISONIC TECHNOLOGIES CO., LTD. 5

QW-R103-004,A

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