Dual loop voltage regulator utilizing gain and phase shaping
AssigneeSamsung Display Co., Ltd.
InventorSamuel T. Ray
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Abstract
A voltage regulator that includes a first amplifier, a second amplifier, a summer, and a transistor is presented. The first amplifier has a first gain and a first frequency bandwidth, and is configured to generate a first voltage output. The second amplifier has a second gain that is lower than the first gain and a second frequency bandwidth that is higher than the first frequency bandwidth, and is configured to generate a second voltage output. The summer is configured to generate a summed voltage output. The transistor is connected to the summer and configured to generate a regulated voltage based on the summed voltage output of the summer.
Claims21
A voltage regulator comprising:
- a first amplifier having a first gain and a first frequency bandwidth, and configured to generate a first voltage output;
- a second amplifier having a second gain that is lower than the first gain and a second frequency bandwidth that is higher than the first frequency bandwidth, and configured to generate a second voltage output;
- a summer configured to generate a summed voltage output;
- and
- a transistor connected to the summer and configured to generate a regulated voltage based on the summed voltage output of the summer.
A voltage regulator comprising:
- a first amplifier comprising an impedance translating transistor and configured to generate a first voltage output;
- and
- a second amplifier configured to generate a second voltage output,
- wherein the first amplifier has a first gain and a first frequency bandwidth, and the second amplifier has a second gain that is lower than the first gain and a second frequency bandwidth that is higher than the first frequency bandwidth.
Dependencies are inferred from the claim text.