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Intelligent electrical power device with monolithic integrated circuit

  • US 4,720,641 A
  • Filed: 06/10/1986
  • Issued: 01/19/1988
  • Est. Priority Date: 06/10/1985
  • Status: Expired due to Term
First Claim
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1. An electrical power arrangement comprising:

  • a MOS power element having a gate, source and drain, said source and drain adapted for connection between first and second source potentials, respectively, for supplying an output potential;

    a CMOS pilot circuit connected to said power element in such a manner that it can maintain said power element in a conduction state by applying and preserving a potential on said gate;

    a condenser for supplying a driving potential to said pilot circuit;

    a charge circuit responsive to said output potential for charging said condenser with said output potential when said power element is in a non-conducting state; and

    logic means for causing said non-conducting state of said power element when said conduction state of said power element has a duration which exceeds the discharge time of the condenser.

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