Devices for sw power supply, Switching devices – Sanyo EP124 User Manual
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14
Devices for SW Power Supply
15
■
Switching Power Supply Types & Recommended Power MOSFETs Map
■
Application Example
ACIN
PFC
Control
PFC FRD
PFC
MOSFET
(1) Flyback
For low-output use (up to 150W)
few externally-conneted parts required
1 MOSFET 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
2 switching 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
4 switching MOSFETs are used
Main SW
MOSFET
Main SW
MOSFET
Pulse IN
DC
Output
VCC
SBD/FRD
SBD/FRD
Main SW
MOSFET
DC
Output
VCC
SBD
Main Control
Main SW
MOSFET
DC
Output
VCC
SBD
SBD
Main Control
(3) Half-Bridge Circuit
(1) Flyback Circuit
(2) Forward Circuit
Main SW
MOSFET
DC
Output
VCC
SBD
SBD
(4) Full-Bridge Circuit
■
Switching Devices
(1) Power MOSFET/SBD/FRD for Adapter
Recommended Devices
Set Spec
PFC
Main SW
Rectifi er
Applications/Power
VOUT
[V]
IOUT
[A]
MOSFET
MOSFET
SBD
Game machine
50W
5
2.0 to 4.0
-
2SK4086LS
(600V/0.58Ω)
SBT80-04J
12
1.0 to 2.0
SBT100-16JS
Notebook PC
65W
20
2.0 to 4.0
-
2SK4087LS
(600V/0.47Ω)
SBT100-16JS
General-purpose
75 to 90W
5
2.0 to 4.0
2SK4085LS
500V/0.33Ω
2SK4087LS
(600V/0.47Ω)
SBT80-04J
12
3.0 to 5.0
SBT150-10JS
24
SBT100-16JS
(2) Power MOSFET/SBD/FRD for other power supply
Recommended Devices [Other sets]
Set Specifi cation
PFC
Main SW
Rectifi er
Set
Specifi cation
Power
[W]
FRD
MOSFET
MOSFET
SBD
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
Main SW
MOSFET
FRD
ACIN
PFC
Control
PFC
MOSFET
[MOSFET/FRD/SBD Use Example]
DC
Output
SBD
SBD
❈: Development
6
8
14
20
Drain
Curr
ent/I
D
[A]
Output Power/POUT[W]
Forward (1 or 2 used)
VDSS: 600 to 800V
Half-bridge (2 used)
VDSS: 450 to 500V
Full-bridge (4 used)
VDSS: 450 to 500V
30
50
100
150
200
250
300
350
400
450
500
Flyback
RCC or PWM
VDSS: 600 to 800V
Universal AC Input
When output becomes large, a high VDSS
is required for the device
ex) Flyback Circuit
Output 80W → VDSS≥600V
Output 120W → VDSS≥700V