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US 8,541,992 B2Granted
Voltage converter
AssigneeNXP B.V.
InventorsHendrik Johannes Bergveld, Franciscus Adrianus Cornelis Maria Schoofs
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Abstract
A DC voltage converter, comprising: a multi-ratio capacitive converter; a linear voltage regulator in series with the multi-ratio capacitive converter; and a controller; the controller arranged to control the ratio of the multi-ratio capacitive converter dependent upon the voltage difference across the linear voltage regulator.
Claims15
A DC voltage converter, comprising:
- a multi-ratio capacitive converter;
- a linear voltage regulator in series with the multi-ratio capacitive converter;
- and
- a controller;
- the controller arranged to control the ratio between the input voltage of the multi-ratio capacitive converter and the output voltage of the multi-ratio capacitive converter dependent upon the voltage difference between the output voltage of the linear voltage regulator and the input voltage of the linear voltage regulator.
2 more elements
A method of converting DC voltage, the method comprising:
- inputting an input voltage to a multi-ratio capacitive converter;
- the multi-ratio capacitive converter converting the input voltage to an intermediate voltage;
- feeding the intermediate voltage to a linear voltage regulator and also to a controller;
- the linear voltage regulator regulating the intermediate voltage to an output voltage;
- feeding the output voltage to the controller and also providing the output voltage as the overall output voltage;
- and
- the controller controlling the ratio of between the input voltage of the multi-ratio capacitive converter and the intermediate voltage of the multi-ratio capacitive converter dependent upon the difference between the output voltage of the linear voltage regulator and the intermediate voltage of the multi-ratio capacitive converter.
4 more elements
Dependencies are inferred from the claim text.