Electronic switching circuit for reducing power-on switching tra

Details Electronic switching circuit for reducing power-on switching tra Electronic switching circuit for reducing power-on switching tra

1998-07-17

2000-05-09

Riley, Shawn

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

323290, G05F 1613

Patent

active

060608684

ABSTRACT:
An electronic switching circuit wherein a first switch has first and second terminals communicating respectively with a supply voltage and with a first terminal of an inductive load; and a second switch has first and second terminals communicating respectively with the first terminal of the load and with a second terminal of the load. A recirculating diode is located parallel with the second switch; the circuit generates a control signal related to the derivative of the recirculating current flowing in the diode; and the control signal is processed to prevent the closing signal from being applied to the first switch when the control signal exceeds a threshold value due to reverse conduction (recovery) of the diode.

REFERENCES:
patent: 4538101 (1985-08-01), Shimpo et al.
patent: 5568044 (1996-10-01), Bittner
patent: 5808453 (1998-09-01), Lee et al.

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