Linear power regulator with current limiting and thermal shutdow

Details Linear power regulator with current limiting and thermal shutdow Linear power regulator with current limiting and thermal shutdow

1989-11-07

1990-11-20

Lobo, Ian J.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323281, G05F 1565

Patent

active

049721364

ABSTRACT:
A power supply has the source and drain of a MOSFET arranged for connection etween an input voltage source and a load. In normal operation a bias voltage is applied to the gate to place the MOSFET in a conductive state. A difference amplifier maintains a fixed ratio between a reference voltage and the output voltage. Current limiting circuitry senses the current that the power supply provides to the load and disables the MOSFET when the current provided to the load exceeds a predetermined value. Thermal shutdown circuitry senses the operating temperature of the power supply and places the MOSFET in a nonconductive state when the operating temperature exceeds a predetermined value.

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