BL0200 Series

BL0200-DS Rev.2.1

SANKEN ELECTRIC CO.,LTD.

21

Feb. 25, 2014

10.Reference Design of Power Supply

As an example, the following show a power supply specification of BL0200C and BL0202B, circuit schematic, bill

of materials, and transformer specification.

This reference design is the example of the value of parts, and should be adjusted based on actual operation in the

application.

10.1 BL0200C

 BL0200C Features

- DRV pin oscillation frequency is 200 kHz

- Error signal output

 Power Supply Specification

IC

BL0200C

Input voltage

DC 24 V

Maximum output power

40 W (max.)

Output voltage

50 V

Output current

400 mA × 2

 Circuit Schematic

L2

P_IN

P_GND

C21

Q3

D6

DRV1

GND

L1

C2

Q2

R5

D1

OUT2

VCC_IN

ER_OUT

PWM2_IN

ON/OFF

PWM1_IN

S_GND

Q5

Q1

D9

D8

REG

1

15

16

17

18

4

3

2

OVP

PWM1

COMP1

VREF

ER

PWM2

COMP2

7

6

5

12

13

14

IFB2

OC2

DRV2

IFB1

OC1

9

8

SW1

10

11

SW2

VCC

F1

C1

OUT1

C18

C3

C5

C4

C6

C7

C8

C9

C10

C11

C12

C13 C14

C15

C16

C19

C20

R1

R2

R3

R4

R6 R7 R8

R10 R11 R12 R13

R9

R14

R15

R51 R52 R53 R54

R56 R57 R58 R59

R55

R60

R61

R16

R17

R19

R18

R20

R21

R22

R24

R23

R25

R26

R27

R28

R29

R30

R31

R32

R33

R34

R35

R36

R37

R38

R39

R40

R41

R42

R44

R45

R46

R47

R48

R49

R50

R62

R63

D2

D3

D7

D10

Q6

Q4