MP171 –NON-ISOLATED OFFLINE REGULATOR

MP171 Rev. 1.0

www.MonolithicPower.com

16

9/30/2015

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TYPICAL APPLICATION CIRCUITS

Figure 9 shows a typical application example of a 5 V, 50 mA non-isolated power supply using the

MP171.

L

N

GND

Vout

GND

39

RF1

470 pF

C7

2.2 µF

C2

D1

SRGC10JH

22 µF

C5

STTH1R06

600 V/1 A

D3

2.2 µF/400 V

C3

2.2µF/400V

C4

1mH

L1

41.2 K

R1

39.2 K

R2

22 nF

C1

1.2 K

R3

1mH

L2

D4

SRJC10JH

D2

SRGC10JH

5V/50mA

85 VAC~265VAC

DRAIN

7

NC

6

NC

5

NC

8

VCC

1

FB

2

SOURC

E

3

SOURC

E

4

U1

MP171GS

NC

C6

Figure 9—Typical application at 5 V, 50 mA