R102

C1

C2

C3

C4

F1

L1

MOV

BD1

+

C5

D1

T1

R14

R13

D5

ZD2

R1

D2

Q1

+

C5

R22

R23

R25

R26

R21

R20

D8

ZD5

D6

Q2

R18

R18

C10

R17

D7

D9

C210

R210

R112

C112

C211

R211

R113

C113

L101

L101

C101

D103

D104

L104

C103

C105

R104

IC3

C102

L102

L103

C104

C106

IC4

C108

C107

R101

R103

M

FAN 1

R108

12 V

5 V

5 A to 20 A

GND

–12 V

8 A to 8.5 A

–5 V

8 A to 8.5 A

R105

D106

L101

13

10

14

9

6

5

4

3

2

1

12

11

16

15

8

7

17

18

19

20

IC1

C23

R9

ZD1

R7

R8

C13

R4

R5

R6

C12

R24

C17

C16

R10

D8

Q4

C24

R29

R12

C18

C18

C20

R11

ZD4

C21

C22

C26

C??

R16

R28

Q3

C8

R15

C7

C11

TPS5044

7

8

3

C80

R50

4

2

1

R51

VR50

R54

R55

R52

R53

5 V

12 V

AC

IC2

1. COMP

2. FB

3. ISENS1

4. CT

5. RT

6. GND

9. MULT

14. IAC

10. SYNC

13. RMS

20.REF

18. OUT1

17. PGND

7. ISENS2

8. CAD

15. PKLIM

16. OUT2

11. VSENSE

12. AO

NOTE: Recommended power MOSFET gate limit resistor, R13, R14, R20, R21 > 20

Ω

Figure 2. Application Circuit, Forward