Circuit arrangement for switching an inductive load

Details Circuit arrangement for switching an inductive load Circuit arrangement for switching an inductive load

1998-11-20

2000-11-21

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327112, 327427, H03K 19082

Patent

active

061508543

ABSTRACT:
Circuit arrangement for switching an inductive load, for example in clocked voltage regulators, includes a switching transistor which is operated in a high-side circuit and is connected to a free-running transistor in a half-bridge arrangement, with the inductive load to be switched positioned in a node between the switching transistor and the free-running transistor. The circuit arrangement also includes a driving circuit for the switching transistor. The switching transistor is connected to an auxiliary transistor in a current balancing arrangement, and the current balancing mode of the transistors can be controlled as a function of a potential present in the node.

REFERENCES:
patent: 5047662 (1991-09-01), Edwards
patent: 5894236 (1999-04-01), Mizoguchi
patent: 5959473 (1999-09-01), Sakugari

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