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US 9,948,240 B2Granted
Dual-output asynchronous power converter circuitry
AssigneeQorvo US, Inc.
InventorsNadim Khlat, Michael R. Kay
Life of this patent
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Abstract
Dual-output power converter circuitry includes an input node, a first output node, a second output node, a number of capacitive elements, and a number of switching elements. The switching elements are coupled between the input node, the first output node, the second output node, and the capacitive elements. In operation, the switching elements charge and discharge the capacitive elements such that a power supply output voltage is provided asynchronously to the first output node and the second output node.
Claims16
Envelope tracking power converter circuitry comprising:
- a first envelope tracking power supply signal output node;
- a second envelope tracking power supply signal output node;
- dual-output power converter circuitry configured to asynchronously provide a first power converter output voltage and a second power converter output voltage based on a supply voltage;
- a voltage regulator configured to provide a regulated supply voltage based on the supply voltage;
- a first parallel amplifier configured to provide a first output voltage and a first output current based on a first parallel amplifier supply voltage, an envelope power converter control signal, and a first feedback signal from the first envelope tracking power supply signal output node;
- a second parallel amplifier configured to provide a second output voltage and a second output current based on a second parallel amplifier supply voltage, an envelope power converter control signal, and a second feedback signal from the second envelope tracking power supply signal output node;
- a first auxiliary switching power converter configured to:
- in a first mode of operation, provide a portion of a first envelope tracking power supply signal to the first envelope tracking power supply signal output node based on the first power converter output voltage and a first auxiliary control signal, wherein the first auxiliary control signal is based on the first output current from the first parallel amplifier;
- and
- in a second mode of operation, provide the second parallel amplifier supply voltage to the second parallel amplifier based on the first power converter output voltage;
- and
- a second auxiliary switching power converter configured to:
- in a first mode of operation, provide a portion of a second envelope tracking power supply signal to the second envelope tracking power supply signal output node based on the second power converter output voltage and a second auxiliary control signal, wherein the second auxiliary control signal is based on the second output current from the second parallel amplifier;
- and
- in a second mode of operation, provide the first parallel amplifier supply voltage to the first parallel amplifier based on the second power converter output voltage.
12 more elements
A radio frequency (RF) transmitter section comprising:
- a first set of power amplifiers configured to receive and amplify RF input signals within a first set of operating bands;
- a second set of power amplifiers configured to receive and amplify RF input signals within a second set of operating bands;
- envelope tracking power converter circuitry comprising:
- a first envelope tracking power supply signal output node coupled to the first set of power amplifiers;
- a second envelope tracking power supply signal output node coupled to the second set of power amplifiers;
- dual-output power converter circuitry configured to asynchronously provide a first power converter output voltage and a second power converter output voltage based on a supply voltage;
- a voltage regulator configured to provide a regulated supply voltage based on the supply voltage;
- a first parallel amplifier configured to provide a first output voltage and a first output current based on a first parallel amplifier supply voltage, an envelope power converter control signal, and a first feedback signal from the first envelope tracking power supply signal output node;
- a second parallel amplifier configured to provide a second output voltage and a second output current based on a second parallel amplifier supply voltage, an envelope power converter control signal, and a second feedback signal from the second envelope tracking power supply signal output node;
- a first auxiliary switching power converter configured to:
- in a first mode of operation, provide a portion of a first envelope tracking power supply signal to the first envelope tracking power supply signal output node based on the first power converter output voltage and a first auxiliary control signal, wherein the first auxiliary control signal is based on the first output current from the first parallel amplifier;
- and
- in a second mode of operation, provide the second parallel amplifier supply voltage to the second parallel amplifier based on the first power converter output voltage;
- and
- a second auxiliary switching power converter configured to:
- in a first mode of operation, provide a portion of a second envelope tracking power supply signal to the second envelope tracking power supply signal output node based on the second power converter output voltage and a second auxiliary control signal, wherein the second auxiliary control signal is based on the second output current from the second parallel amplifier;
- and
- in a second mode of operation, provide the first parallel amplifier supply voltage to the first parallel amplifier based on the second power converter output voltage.
15 more elements
Dependencies are inferred from the claim text.