Texas Instruments Corporation

Adam Quirk

Md Abidur Rahman

Sualp Aras

Stephen Nortman

A circuit protective system. The system includes an output controlling enablement of a transistor and an input sensing an operational parameter associated with the transistor. The system also includes detection circuitry providing an event fault indicator if the operational parameter violates a condition. The system also includes protective circuitry disabling the transistor in response to the event fault indicator and subsequently selectively applying an enabling bias to the transistor; the enabling bias is selected from at least two different bias levels and in response to a number of event fault indications from the detection circuitry.

Method of achieving robustness of the device in short circuit condition by adjusting the current limit threshold based repetitive fault condition

State machine controlling power transistor through fault and no fault

A circuit protective system with an input for sensing a reference current and an input for sensing a reference voltage. The system also has circuitry for determining an estimated energy in response to the reference current and the reference voltage and circuitry for generating a control signal responsive to the estimated energy exceeding a threshold.

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Dallas, TX, United States of America

Adam Quirk