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Products by Use
Personal computers

Adaptor for Note PC Power supply for Desktop PC PC servers

Adaptor for Note PC

As notebook PCs grow smaller and more mobile, adapters for notebook PCs are becoming increasingly more efficient and compact. Meanwhile, adapter capacities are increasing through the use of high-performance CPUs in notebook PCs.
Below, we showcase Fuji Electric semiconductors that are optimal for notebook-PC adapters.

AC adapter for Notebook PCs :
Flyback converter circuit configuration

Circuit Design
75W or less 75W or more

AC adapter for Notebook PCs :
Recommended devices for flyback converters

75W or less

Off Line Converter Secondary rectification
Control IC MOSFET Diode
+19V devices
PWM-IC
Quasi-resonant IC
600V
650V

700V
90/100VSBD
120VSBD
150VSBD
200VLLD

75W or more

PFC Circuit Off Line Converter Secondary rectification
Control IC MOSFET Diode Control IC MOSFET Diode
+19V devices
ICs for PFC
500V
600V
650V

SuperLLD2
(DCM)

SuperLLD3
(CCM)

PWM-IC
600V
650V

700V
90/100VSBD
120VSBD
150VSBD
200VLLD

PFC Circuit Off Line Converter Secondary rectification
Control IC MOSFET Diode Control IC MOSFET Synchronous rectifiers
+19V devices
ICs for PFC
500V
600V
650V

SuperLLD2
(DCM)

SuperLLD3
(CCM)

Quasi-resonant IC
600V
650V

700V
100V
Trench MOS


Power supply for Desktop PC

The high-performance CPUs in today's desktop PCs require high-capacity power supplies, and this makes it necessary to improve the power efficiency as well. In particular, methods with efficiencies of 80% or better are being considered.
Below, we showcase Fuji Electric semiconductors that are optimal for desktop-PC power supplies.

Power supplies for desktop PCs :
Forward converter circuit configuration

circuit configuration of desktop PCs

Power supplies for desktop PCs :
Recommended devices for forward converters

PFC Circuit Off Line Converter Secondary rectification
Control
IC
MOSFET Diode Control
IC
MOSFET Diode Synchronous rectifiers
+12V
devices
+5V
devices
+3.3V
devices
+12V
devices
ICs for PFC
500V
600V
650V

SuperLLD2
(DCM)

SuperLLD3
(CCM)

PWM-IC
Quasi-resonant IC
900V
80VSBD
90/100VSBD
120VSBD
150VSBD
200VLLD
30VSBD
40/45VSBD
30VSBD
100V
Trench MOS


PC servers & desktop PCs :
Double forward converter circuit configuration

circuit configuration of PC servers and desktop PCs

PC servers & desktop PCs :
List of devices for double forward converters

PFC Circuit Off Line Converter Secondary rectification
Control
IC
MOSFET Diode Control
IC
MOSFET Diode Synchronous rectifiers
+12V
devices
+5V
devices
+3.3V
devices
+12V
devices
ICs for PFC
500V
600V
650V

SuperLLD2
(DCM)

SuperLLD3
(CCM)

PWM-IC
Quasi-resonant IC
500V
600V
650V

80VSBD
90/100VSBD
120VSBD
150VSBD
200VLLD
30VSBD
40/45VSBD
30VSBD
100V
Trench MOS