Fault Protection Circuit for Power Switching Device.
Abstract
A fault protection circuit for a power switching device. The circuit comprises a driver circuit electrically connected to the power switching device, a saturation comparator electrically connected to the collector of the switching device to determine if the switching device is switching an excessive voltage, and two undervoltage comparators to determine if the gate is receiving sufficient voltage. If the gate is oversaturated the saturation comparator enables the gate of a field effect transistor which drains the gate of the switching device, and the saturation comparator also disables the driver circuit. The undervoltage detectors detect insufficient voltage to the driver circuit and disable the driver circuit. Once the driver circuit is disabled the control circuitry can take corrective action.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 05, 1994
- Accession Number
- ADD016466
Entities
People
- John R. Raposa
Organizations
- United States Department of the Navy