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US 9,941,844 B2Granted
Dual-mode envelope tracking power converter circuitry
AssigneeQorvo US, Inc.
InventorNadim Khlat
Life of this patent
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Abstract
Envelope tracking power converter circuitry is configured to receive a supply voltage and simultaneously provide a first envelope tracking power supply signal for amplifying a first RF input signal and a second envelope tracking signal for amplifying a second RF input signal.
Claims20
Envelope tracking power converter circuitry comprising:
- a first envelope tracking power supply signal output node;
- a second envelope tracking power supply signal output node;
- a main switching power converter configured to provide a boost 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, the 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 boost 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 boost 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 boost 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 boost 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;
- a main switching power converter configured to provide a boost 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 boost 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 boost 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 boost 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 boost voltage.
15 more elements
Envelope tracking power converter circuitry configured to receive a supply voltage and an envelope power converter control signal and simultaneously provide an envelope tracking power supply signal to a first selected power amplifier for amplifying a first radio frequency (RF) input signal and an average power tracking power supply signal to a second selected power amplifier for amplifying a second RF input signal.
Dependencies are inferred from the claim text.