Electronic switch-mode power supply

Details Electronic switch-mode power supply Electronic switch-mode power supply

1997-12-16

1999-03-02

Berhane, Adolf Deneke

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

363 89, G05F 156, H02M 704

Patent

active

058776141

ABSTRACT:
An electronic switch-mode power supply has a rectifier circuit at a line ac voltage and which comprises a pair of outputs at high level or at ground reference potential, and having an output stage that supplies a smoothed dc voltage. The rectifier circuit is connected to the output stage via an electronic switch and, triggered by a switch control signal supplied to the electronic switch can thus be optionally coupled to the outputs of the rectifier circuit. The electronic switch comprises a transistor switch element and a control transistor, the transistor switch element comprising a switching path arranged between the output of the rectifier circuit lying at high level and the corresponding terminal of the output stage, and which comprises a control input that is held to blocking potential via the conductively maintained switching path of the control transistor driven by the switch control signal, or is held to make potential given an inhibited control transistor. The switch-mode power supply is employable in dc voltage-converted power supplies, particularly given relatively high supply voltages.

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