Devices for SW Power Supply

■Switching Power Supply Types & Recommended Power MOSFETs Map

■Switching Devices

Universal AC Input

20

D[A]

 

Flyback

Current/I

14

 

 

Drain

8

RCC or PWM

VDSS: 600 to 800V

 

 

 

 

6

 

Forward (1 or 2 used)VDSS: 600 to 800VFull-bridge (4 used)VDSS: 450 to 500V
Half-bridge (2 used)

When output becomes large, a high VDSS

VDSS: 450 to 500V

is required for the device

 

ex) Flyback Circuit

 

Output 80W

→ VDSS≥600V

 

Output 120W

→ VDSS≥700V

[MOSFET/FRD/SBD Use Example]

ACIN

FRD

PFC

 

 

Control

 

SBD

PFC

 

DC

MOSFET

 

Output

 

Main SW

SBD

 

 

 

MOSFET

 

Output Power/POUT[W]

30 50 100 150 200 250 300 350 400 450 500

■Application Example

(1)Power MOSFET/SBD/FRD for Adapter Recommended Devices

 

Set Spec

 

PFC

Main SW

Rectifier

 

 

 

 

 

 

Applications/Power

VOUT

IOUT

MOSFET

MOSFET

SBD

[V]

[A]

 

 

 

 

 

 

 

 

 

 

Game machine

5

2.0 to 4.0

 

2SK4086LS

SBT80-04J

ACIN

PFC FRD

PFC

Control

PFC

MOSFET

(1)Flyback

For low-output use (up to 150W)

few externally-conneted parts required

1MOSFET is used for switching

(2)Forward

Usable for middle-large ouput (100 to 300W) Several switching MOSFETs can be used in parallel Several switching MOSFETs can be used

(3)Half-Bridge

For middle output (<150 to 400W)

MOSFET with a lower voltage than flyback or Forward voltage can be used

2switching MOSFETs are used

(4)Full-Bridge

For high output (>300 to 400W)

MOSFET with a lower voltage than flyback or forward voltage can be used

4switching MOSFETs are used

SBD

(1) Flyback Circuit

VCC

DC

 

Main SW

Output

 

MOSFET

 

Main Control

 

SBD

(2) Forward Circuit

VCC

DC

 

SBD

Output

Main SW

 

MOSFET

 

Main Control

 

VCC

(3) Half-Bridge Circuit

Pulse IN

 

Main SW

SBD/FRD

 

MOSFET

DC

 

 

Output

Main SW

SBD/FRD

MOSFET

VCC

(4) Full-Bridge Circuit

SBD

DC

Output

Main SW

SBD

MOSFET

 

50W

 

 

-

(600V/0.58Ω)

 

12

1.0 to 2.0

SBT100-16JS

 

Notebook PC

20

2.0 to 4.0

-

2SK4087LS

SBT100-16JS

65W

(600V/0.47Ω)

 

 

 

 

 

 

 

 

 

 

General-purpose

5

2.0 to 4.0

2SK4085LS

2SK4087LS

SBT80-04J

12

 

SBT150-10JS

75 to 90W

3.0 to 5.0

500V/0.33Ω

(600V/0.47Ω)

24

SBT100-16JS

 

 

 

 

(2) Power MOSFET/SBD/FRD for other power supply

 

 

 

 

Recommended Devices [Other sets]

 

 

 

 

❈: Development

 

 

 

 

 

 

 

 

 

Set Specification

 

 

PFC

Main SW

Rectifier

 

 

 

 

 

 

 

 

Set

Specification

Power

FRD

 

MOSFET

MOSFET

SBD

[W]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Printer

Domestic (Japan)

50

-

 

-

2SK4096LS

SBT150-10JS

W/W

50

-

 

-

2SK4098LS

SBT150-10JS

 

 

BL DVD recorder

Domestic (Japan)

100

❈ RD0506LS

 

2SK4097LS

2SK4087LS

SBT100-16JS

DVD recorder

Domestic (Japan)

60

-

 

-

2SK4097LS

SBT80-06J

Desktop PC

W/W

>200

❈ RD1006LS

 

2SK4085LS

2SK4125

SBT350-04J

PDP TV

W/W

>300

❈ RD1006LS

 

2SK4124

2SK4124

SBT100-16JS

14

15