ML4803

11

February 1999

Figure 12. Typical Application Circuit. Universal Input 240W 12V DC Output

BR1

600V

4A

LINE

NEUTRAL

F1 5A 250V

J1-1

J1-2

C19

4.7nF

250VAC

C20

4.7nF

250VAC

R24

470k

Ω

0.5W

TH1

10

Ω

5A

R3 0.15

Ω 3W

102T

L2

Q5

Q2

Q4

Q1

1000µH

R1

36

Ω

CR1 8A, 600V

CR7

CR3

CR18 51V

C26

0.01µF

500V

C18 4.7nF

CR2

30A, 60V

R36 220

Ω

L1 25µH

C29 0.01µF

CR2

30A

60V

C2

2200µF

C3

1µF

C1

220µF

450V

R2

L3

36

Ω

CR5

16V

0.5W

R22

10k

Ω

R8 36

Ω

R23

10k

Ω

R38 22

Ω

R30 200

Ω

C7

0.1µF

R27

20k

Ω

3W

R26

20k

Ω

3W

R10

0.75

Ω

3W

T2

T1

C23

0.01µF

CR4

CR11

CR10

CR12

CR9

R5 36

Ω

R11 150

Ω

Q3

R4 1k

Ω

ML4803

1

2

3

4

8

7

6

5

C15

0.015µF

C6

1µF

C5

8.2nF

C28

1µF

C9

1µF

C10

2.2nF

U2

4

5

1

2

2

3

1

R17 3.3k

Ω

R6 1.2k

Ω

C12 0.1µF

C25

0.01µF

500V

12V

J2-1

12VRET

J2-2

R18 1k

Ω

U3

CR8

L2

4T

CR15

1

10

3

4

R32 100

Ω

C27

0.01µF

R15

9.09k

Ω

7.0V

R21

10k

Ω

C14

4.7µF

C17

0.1µF

R16

2.37k

Ω

R13

5.62M

Ω

R7

10

Ω

CR16

IN4148

R12

5.62M

Ω

C4

0.47µF

250VAC

R14

150

Ω

2W

R37

330

Ω

R9

1.5k

Ω

C13 1nF

R31

10

Ω

C11

1000µF

C21

1µF

C22

1µF

R29 20k

Ω

R28

20k

Ω

R19

10k

Ω

PFC

GND

ISENSE

VEAO

PWM

VCC

ILIMIT

VDC

R20

510

Ω

R25

390k

Ω

C8

0.15µF

C16

0.01µF