Envelope tracking power management circuit
First Claim
1. An envelope tracking (ET) power management circuit comprising:
- a voltage circuit comprising a voltage output and configured to generate a supply voltage at the voltage output;
a plurality of tracker circuits comprising a plurality of voltage inputs configured to receive a plurality of input voltages, the plurality of tracker circuits configured to generate a plurality of ET modulated voltages based on the plurality of input voltages, respectively; and
control circuitry configured to couple the voltage output to at least one selected voltage input among the plurality of voltage inputs to provide the supply voltage to at least one selected tracker circuit among the plurality of tracker circuits as a selected input voltage among the plurality of input voltages.
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Accused Products
Abstract
An envelope tracking (ET) power management circuit is provided. The ET power management circuit includes a number of tracker circuits each configured to operate based on a respective input voltage. In various operation scenarios, one or more selected tracker circuits may be configured to provide ET modulated voltages to a number of amplifier circuits. In examples discussed herein, each of the selected tracker circuits is configured to draw the respective input voltage from a single voltage circuit (e.g., an inductor-based buck-boost circuit) in the ET power management circuit. By utilizing the single voltage circuit to power the selected tracker circuits, as opposed to employing multiple voltage circuits, it is possible to reduce the footprint of the ET power management circuit, thus helping to reduce cost and power consumption of the ET power management circuit.
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Citations
21 Claims
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1. An envelope tracking (ET) power management circuit comprising:
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a voltage circuit comprising a voltage output and configured to generate a supply voltage at the voltage output; a plurality of tracker circuits comprising a plurality of voltage inputs configured to receive a plurality of input voltages, the plurality of tracker circuits configured to generate a plurality of ET modulated voltages based on the plurality of input voltages, respectively; and control circuitry configured to couple the voltage output to at least one selected voltage input among the plurality of voltage inputs to provide the supply voltage to at least one selected tracker circuit among the plurality of tracker circuits as a selected input voltage among the plurality of input voltages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification