H02M 3/1566

Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators {with means for compensating against rapid load changes, e.g. with auxiliary current source, with dual mode control or with inductance variation}