7

F

9/02

LNK501

Figure 9. 2.75 W Constant Voltage/Constant Current (CV/CC) Charger using LinkSwitch.

Figure 10. Measured Output Characteristic of the Circuit in Figure 9.

100

0

200

300

400

500

600

700

0

1

2

3

4

5

6

7

8

9

10

C1

4.7 µF

400 V

C2

4.7 µF

400 V

RF1

10 Ω 1 W

Fusible

L1

1 mH

R1

20.5 kΩ

1%

R2

100 Ω

D5

1N4937

C4

0.1 µF

100 V

116 T

#34 AWG

EE13

15 T

#30 AWG

TIW

3

4

1

5

T1

6

D6

11DQ06

C5

470 µF

10 V

85-265

VAC

U1

LNK501

LinkSwitch

5.5 V,

500 mA

RTN

BR1

1 A, 600 V

PI-2904-083002

PERFORMANCE SUMMARY

Output Power:

2.75 W

Efficiency:

≥72%

No Load

Consumption:

260 mW, 230 VAC

200 mW, 115 VAC

C3

0.22 µF

50 V

D

S

C