TOP200-4/14

D

7/96

8

Figure 10. Schematic Diagram of a 65 W 230 VAC Input Boost Power Factor Correction Circuit Utilizing the TOP202.

Figure 9. Schematic Diagram of a 30 W Universal Input Power Supply Utilizing the TOP204 and Accurate Optocoupler Feedback.

PI-1696-112895

15 V

RTN

BR1

400 V

C1

47

µF

400 V

C5

47

µF

C4

0.1

µF

U1

TOP204YAI

R3

6.2

Ω

R2

200

Ω

1/2 W

D2

MUR610CT

D3

1N4148

C2

1000

µF

35 V

T1

D1

BYV26C

C7

1 nF

Y1

DRAIN

SOURCE

CONTROL

C3

120

µF

25 V

U2

NEC2501

U3

TL431

R4

49.9 k

Ω

R5

10 k

Ω

C9

0.1

µF

R1

510

Ω

VR1

P6KE200

L1

3.3

µH

F1

3.15 A

J1

C6

0.1

µF

L2

33 mH

L

N

CIRCUIT PERFORMANCE:

Line Regulation - ±0.2%

(85-265 VAC)

Load Regulation - ±0.2%

(10-100%)

Ripple Voltage ±150 mV

Meets CISPR-22 Class B

ST204A REFERENCE DESIGN BOARD

PI-1750-012296

Vo

RTN

D1

MUR460

BR1

400 V

R1

200 k

Ω

R2

200

Ω

R10

6.8 k

Ω

R3

3 k

Ω

VR1

IN5386B

VR2

IN5386B

D2

1N4935

C1

220 nF

400 V

C4

47

µF

C2

4.7

µF

C3

220

µF

L1

500

µH

EMI

FILTER

AC

IN

U1

TOP202YAI

DRAIN

SOURCE

CONTROL

TYPICAL PERFORMANCE:

Power Factor = 0.98

THD = 8%