High-efficiency DC/DC voltage converter including capacitive...

Details High-efficiency DC/DC voltage converter including capacitive... High-efficiency DC/DC voltage converter including capacitive...

2007-08-08

2010-10-12

Sterrett, Jeffrey L (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S222000, C323S282000, C363S060000

Reexamination Certificate

active

07812579

ABSTRACT:
A DC/DC converter includes a pre-converter stage, which may include a charge pump, and a post-regulator stage, which may include a boost converter. The duty factor of the post-regulator stage is controlled by a feedback path that extends from the output terminal of the DC/DC converter to an input terminal in the post-regulator stage. The pre-converter steps the input DC voltage up or down by a positive or negative integral or fractional value, and the post-regulator steps the voltage up by a variable amount depending on the duty factor at which the post-regulator is driven. The converter overcomes the problems of noise glitches, poor regulation, and instability, even near unity input-to-output voltage conversion ratios.

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