ML4841

13

AC INPUT

85 TO 265VAC

C1

680nF

ML4841

F1

3.15A

R5

300m

Ω

1W

56.2k

Ω

BR1

4A, 600V

D12

1A, 50V

D13

1A, 50V

R2A

453k

Ω

R2B

453k

Ω

R3

75k

Ω

R4

13k

Ω

R1A

499k

Ω

R1B

499k

Ω

R12

27k

Ω

C6

1nF

C7

220pF

R11

750k

Ω

C19

1µF

C2

470nF

R27

22k

Ω

C18

390pF

R6

24.9k

Ω

R10

6.2k

Ω

C11

10nF

390pF

C3

100nF

C30

330µF

R21

22

Ω

C4

10nF

D1

8A, 600V

C5

100µF

R14

33

Ω

D10

1A, 20V

D8

1A, 20V

R7A

178k

Ω

R7B

178k

Ω

C12

10µF

D3

50V

Q1

IRF840

Q2

IRF830

C13

100nF

C14

1µF

IEAO

IAC

ISENSE

VRMS

SS

VDC

RAMP 1

RAMP 2

VEAO

VFB

VREF

VCC

PFC OUT

PWM OUT

GND

DC ILIMIT

Q3

IRF830

R15

3

Ω

C20

1µF

R28

160

Ω

12VDC

L1

3.1mH

L2

33µH

C21

1800µF

C24

1µF

RTN

D11

MBR2545CT

D5

600V

D6

600V

C25

100nF

R17

33

Ω

R30

4.7k

Ω

D7

15V

R22

8.66k

Ω

R25

2.26k

Ω

R20

1.1

Ω

C15

10nF

C16

1µF

C31

1nF

R8

2.37k

Ω

C8

82nF

C9

8.2nF

C17

220pF

R19

220

Ω

R23

1.5k

Ω

R24

1.2k

Ω

C22

4.7µF

TL431

R26

10k

Ω

C23

100nF

R18

220

Ω

T2

T1

Figure 6. 100W Power Factor Corrected Power Supply.

TYPICAL APPLICATIONS

Figure 6 is the application circuit for a complete 100W

power factor corrected power supply, designed using the

general methods and topology suggested in Application

Note 33.