Low drop-out switching regulators

Details Low drop-out switching regulators Low drop-out switching regulators

1998-02-20

1999-09-21

Sterrett, Jeffrey

Electricity: power supply or regulation systems

Output level responsive

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

323271, 323284, G05F 1618

Patent

active

059558725

ABSTRACT:
A method for generating, in a switching power supply, an output voltage from an input voltage. The method includes the step of closing a switch in the switching power supply to permit current from the input source to flow through the inductor and the capacitor of the switching power supply, thereby building up an inductor current through the inductor and increasing the output voltage across the capacitor. If a combination of the output voltage and inductor current is satisfactory at the start of an off-time of the oscillator signal, the method opens the switch. If a combination of the output voltage and inductor current is unsatisfactory at the start of an off-time of the oscillator signal, the inventive method preferably keeps the switch closed past the off time of the oscillator signal to continue building up the inductor current through the inductor and increasing the output voltage across the capacitor.

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patent: 5814979 (1998-09-01), Grimm

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