System Description
SYSTEM DESCRIPTION
A Smart Field-Effect Transistor (FET) is a transistor used to monitor and control current flow on module outputs. The IPDM E/R uses a Smart FET protection strategy to prevent module damage in the event of excessive current flow. The Smart FET protection strategy monitors its outputs for excessive current, and when a fault occurs, shuts down the output and records a DTC.
COMPONENT FUNCTION WITHIN SYSTEM
- The Smart FET turns the each lamps ON according to the request from the BCM.
- The Smart FET turns the A/C compressor (magnetic clutch) ON according to the request from the ECM.
INDIVIDUAL COMPONENT FUNCTION
The Smart FET supplies power supply voltage to the each lamp and the A/C compressor (magnetic clutch).
COMPONENT OPERATION
The Smart FET, that uses MOS field effect transistor, is adopted for each lamp and the A/C compressor (magnetic clutch) control.
NOTE:
A MOS field effect transistor is a transistor in which the gate is composed of a metal-oxide-semiconductor (MOS). Field effect transistor is controlled by voltage, while ordinary transistor is controlled by current. Electrode of field effect transistor is called source, drain, or gate, while electrode of ordinary transistor is called emitter, collector, or base.