MP110 – 900V OFFLINE SWITCHING REGULATOR

TYPICAL APPLICATION CIRCUITS

499k/1206

R17

10k/1%

R23

S1ML/1kV/1A

D5

TL431K/2.5V

U4

U2

EL817B

0.22uF/275V

CX1

5.1M

/1206

R9

5.1M

/1206

R10

5.1M

/1206

R11

5.1M

/1206

R8

0.1uF

C5

100k/1%

R14

1nF

C4

1M/1206

R6

1M/1206

R5

51k/0805

R7

7448640416

/18mH

LX1

5.1/1%

/1206

R13

5.1/1%/1206

R12

499k/1206

R16

2.2nF/630V/1206

C3

10M/1206

R4

10/1206

R18

1nF

/250V/0805

C11

22uF/50V

C7

1000uF

/25V

C9

1uF

/50V

C8

1uF

/50V

C10

40.2k/1%

R22

20k

R21

100nF

C12

22uF/50V

C6

MBRS3200/200V/3A

D8

2.49/0805

R15

2.2M/1206

R1

2.2M/1206

R2

2.2M/1206

R3

22uF/400V

C2

Pro

10/1W

FR1

1k

R19

2k

R20

Drain

5

FSET

3

Source

7

GND

8

VCC

4

Pro

2

FB

1

U1

MP110

Pro

0.22uF/275V

CX2

B1100/100V/1A

D7

BAV21W/200V/0.2A

D6

1N4007

D1

1N4007

D2

1N4007

D3

1N4007

D4

22uF/400V

C1

VOUT2

GND

VOUT1

GND(L)

L

N

L78L05

U3

85Vac to 420Vac

5V/50mA

12.5V/0.4A

1nF

C13

NC

2

3

4

5

6

9

10

T1

1nF

CY1

Primary inductance: 2.5mH

N2

N3

N5

N4

N1:N2:N3:N4:N5=18:125:14:14:9

1

N1

Figure 12: Typical Application Schematic

NC

a) Connection Diagram

b) Winding Diagram

Figure 13: Transformer Structure

1T

1T

1T

1T

3T

3T

N4

N5

N1

N2

N3

3mm wall

3mm wall

MP110 Rev. 1.01

www.MonolithicPower.com

19

6/4/2014

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