DC/DC converter
OwnerJames Christopher Laceyinventor
Life of this patent
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Abstract
A DC/DC converter for use in a wide variety of electronic applications to convert higher level unregulated DC signals to lower lever regulated DC signals. The converter overcomes traditional converter problems such as inefficiencies, high cost and signal noise using a switching regulator circuit. The switching regulator circuit has a switching means (6) for switching the unregulated DC signal received, a current sense amplifier (4) for modulating the switching means, a hysteresis generator (10) for modulating the current sense amplifier and an output circuit for controlling delivery of a regulated DC signal to a converter output. The switching means is formed to deliver a substantially constant signal to the current sense amplifier using modulation.
Claims11
A DC/DC converter for converting an unregulated DC signal to a regulated DC signal, the converter including a switching regulator circuit of the type having:
- a switching means for switching an unregulated DC signal received at a converter input;
- a current sense amplifier for modulating the switching means;
- a hysteresis generator for modulating the current sense amplifier;
- and
- an output circuit for controlling delivery of a regulated DC signal to a converter output,
- characterised in that the switching means is formed to deliver a substantially constant signal to the current sense amplifier, present a positive impedence to the source to prevent latching and the hysteresis generator is formed to provide positive switching of the switching circuit using a current limit transistor.
A DC/DC converter for use with a controller the converter including a switching regulator circuit of the type having:
- a switching means for connecting the controller to an unregulated DC voltage source;
- a current sense amplifier for modulating the switching means;
- a hysteresis generator for modulating the current amplifier;
- and
- an output circuit for controlling a regulated voltage supply for the controller characterised in that the switching circuit is formed to provide a low voltage output and a high voltage output from an unregulated rectified mains voltage and the hysteresis generator is formed to provide positive switching of the switching circuit using a current limit transistor.
Dependencies are inferred from the claim text.