Invention Grant
- Patent Title: Envelope tracking power management circuit
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Application No.: US16411568Application Date: 2019-05-14
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Publication No.: US10666202B2Publication Date: 2020-05-26
- Inventor: Nadim Khlat , Michael R. Kay
- Applicant: Qorvo US, Inc.
- Applicant Address: US NC Greensboro
- Assignee: Qorvo US, Inc.
- Current Assignee: Qorvo US, Inc.
- Current Assignee Address: US NC Greensboro
- Agency: Withrow &Terranova, P.L.L.C.
- Main IPC: H03F1/02
- IPC: H03F1/02 ; H03F3/189 ; H03G3/30 ; H03F3/24 ; H03F3/21 ; H03F3/68

Abstract:
An envelope tracking (ET) power management circuit is provided. The ET power management circuit includes an amplifier circuit(s) configured to output a radio frequency (RF) signal at a defined power level corresponding to a direct current, an alternating current, and an ET modulated voltage received by the amplifier circuit(s). The ET power management circuit can operate in a high-power ET mode when the defined power level exceeds a defined power level threshold and the RF signal is modulated to include no more than a defined number of resource blocks. The ET power management includes two ET tracker circuitries each generating a respective ET modulated voltage and two charge pump circuitries each generating a respective current. In the high-power ET mode, both charge pump circuitries are activated to each provide a reduced current to the amplifier circuit, thus helping to reduce a footprint and cost of the ET power management circuit.
Public/Granted literature
- US20190267947A1 ENVELOPE TRACKING POWER MANAGEMENT CIRCUIT Public/Granted day:2019-08-29
Information query
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