LINEUP BY APPLICATION
1.4 Automotive Use
Car electrical systems
2 Transmission
system
Automatic transmission
(torque converter), etc.
1 Engine
Fuel injector
Electromagnetic pump
Electromagnetic
valve, etc.
4 Instrument
panel
Illumination control
5 Comfort control
system
Airconditioner
Power windows
Power mirror
Power seats, etc.
6 Safety
Air Bag System
etc.
5 Wheel base and
body control
Anti-skid brakes
Suspension
Power steering
Vehicle height control, etc.
Advantages of power MOS FET use
(V
DSS
150 V class)
Saturation voltages can be made lower than
with bipolar transistors.
(Ex.):
Bipolar
MOS FET
V
CE (sat)
1.8 V (at 25 A)
0.85 V
0.85 V (at 5 A)
0.16 V
This means heat sinks can be made smaller
or eliminated altogether.
+
Equipment can be driven directly
by a 5-V power supply. Lower driving
power means simpler circuits.
Peripheral parts can be made more compact,
and fewer parts are needed.
Smaller, less expensive, and more reliable
equipment can be achieved.
21
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