STMicroelectronics

1500V MOSFET based DEMOBOARDS

MPA Systems Lab – Power Supply Team

2

SMPS for 3-Ph Input1500V MOSFET

The SMPS have been designed for industrial applications for auxiliary power

supplies;

The input voltage in such applications can range between 230Vac and 460Vac;

The proposed power supplies are based on the high voltage power MOSFET, with

VDS=1500V;

The power supply topology is the Quasi-resonant Flyback, driven by the primary

controller L6565;

Two demoboard have been developed:

- DB#1 – 10W SMPS with two isolated outputs

- DB#2 – 40W SMPS with double output

3

10W SMPS for 3-Ph InputParameter Value

Input voltage range 185 to 460 Vac

Input frequency range 50/60 Hz

Demoboard 1

Output 1 12V @ 0.5A

Output 2 5V @ 0.55A

Output power 10W

Demoboard 2

Output 1 24V @ 1.7A

Output 2 5V @ 1A

Output Power 45W

Line regulation +/- 1%

Load regulation +/- 1%

Output ripple voltage 1 50mV

Hold-up capability > 40 ms (*)

Safety EN60950

EMI EN55022 class B

4

10W SMPS for 3-Ph Input SCHEMATIC

R51.8M

Lp=15mH

12V @ 600 mA

5V @ 550 mA

N1/N5V=87

R24nc

N1/N12V=38N1/Naux=30

R25nc

Core material N67Core shape E20 (E25)

L8 1mH

D101N4007

AC

L9 1mH C20

10n-X2

400Vac

CON1

12

C21

10n-X2

R261M

R271M

R281M

R291M

NTC2

50E

+C22

4.7uF

230Vac

CON2

12

+C23

4.7uF

F4 1A

L10 1mH

L11

27 mH

1 234

D111N4007

AC

D121N4007

AC

D131N4007

AC

480-650VDC

10u

L7

10u

L6

Q11 nc

R122.2k - nc

Co422u - 10V

C16nc

R11

10

U1

L6565

VFF3

ZCD5

INV1

GND6

GD7

COMP2

CS4

VCC8

R7330k

R13

27k

C11

2.2n

R15

15k

R12

12k

C10

1n

C19

2.2n - Y1

R17

1k

M1

STP4N1503

12

R183.5

R16

2.2

C12220p

R192.2k

C17

330n

R2210k

C947u

R2110k

U3

TL431 23

1

R23

560

R201k

C18

n.c.

PC817

U2

C13100n

C14100p

D6

1N4148

R61.8M

Co3

22u - 25V

C15

6.8n - nc

D5

STTH108

R9

150KC8

1n/2kV

D7

1N4148

R14

120k

R8330k

R10

150K

Co1220u - 25V

D8

STPS3L40S

D9

STPS3L25SCo2

220u - 10V

T1

TRANSFORMER

1

2

54

3 6

7

8

D4

STTH108

J6

CON2

1

23

5

40W SMPS for 3-Ph Input SCHEMATIC

R212R2

L1 1mH

D41N4007

AC

L2 1mH

U5TL431

21

3

U4 L5970A D

INH3

FB5

OUT1

V RE F6

GND7

S Y NC2

COMP4

V CC8

R51.8M

J6

CON3_0

21

3

g=1.32mm

Ns=15T-AWG23Np=185T-AWG34

Lp=3.5mH

Naux=10T-AWG32

T1

TRA NS FORME R

7

2

1

3

14

8

Np/Ns=12.17C3

10n-X 2

R22nc

C4

10n-X 2

400Vac

CON1

12

Core material N67(CF138)COre shape ETD29

R21M

R11M

5V/1A

R31M

R41M

NTC1

50E

230Vac

CON2

12

+C1

22uF/450V

+C2

22uF/450V

F1 1A

L3 1mH

L4

27 mH

1 234

D31N4007

AC

D11N4007

AC

D21N4007

AC

Q11 nc

R132.2k - nc

C12nc

R12 16R

24V/1.7A

U1

L6565

V FF3

ZCD5

INV1

GND6

GD7

COMP2

CS4

V CC8

R8330k

R15

27k

C7

2.2n

R17 56kR14

18k

C6

1n

C14

2.2n - Y 1

R19

1k

M1

S TP 4N150

1

23

R202R2

R18

2.2

C92.2n

R262k2

C22 22n

R301.2k - 1%

C1047u

R2810k - 1%

R29

5k6

R273k3

C23

n.c.

P C817

U2

C8100n

C11470p

D7

1N4148

R61.8M

C16

22u/35V

C13

6.8n - nc

D5

S TTH108

R10150K /2W

C5

3.3n/2kV

D8

1N4148

R16

120k

R9330k

R11150K /2W

L5 10uH

C15

220u/35V

D9 S TP S 5H100

D6

S TTH108

HS12C/W

L6 15uH

C20

10uF/35V

+C17

220uF/10VC18

22nC19

220p

480-650VDC

R71.8M

R2312k

R24

3k9R25

4k7

C21 nc

D10

S TP S 2L25U

6

40W SMPS for 3-Ph Input