US 2026/0254411 A1 · DISTRIBUTED POWER MANAGEMENT CIRCUIT

Abstract

A distributed power management circuit is provided. The distributed power management circuit includes a main power management integrated circuit (PMIC) and a distributed PMIC separated from the main PMIC. The main PMIC is coupled to the distributed PMIC via a conductive path. Notably, a parasitic capacitance of the main PMIC can interact with a trace inductance of the conductive path to cause an equivalent notch that can degrade linearity performance of the distributed PMIC. In this regard, in embodiments disclosed herein, a deQ circuit is provided in the distributed power management circuit to reduce a quality factor (Q-factor) of the equivalent notch to thereby improve linearity performance of the distributed PMIC. Further, the deQ circuit can be so configured to increase an open loop gain of the distributed PMIC to help reduce current flow in the distributed PMIC to thereby improve overall energy efficiency of the distributed power management circuit.

Claims20

Dependent claims

A distributed power management circuit comprising:

a distributed power management integrated circuit, PMIC, configured to generate a distributed voltage based on a distributed target voltage;
a main PMIC configured to generate the distributed target voltage and provide a low-frequency current to the distributed PMIC via a conductive path provided between the main PMIC and the distributed PMIC;
and
a deQ circuit provided between the distributed PMIC and the main PMIC and configured to resonate at a series resonance frequency to reduce a quality factor, Q-factor, of an equivalent notch collectively caused by an equivalent inductance of the conductive path and an equivalent capacitance of the main PMIC.

1 more element

A wireless device comprising:

at least one primary antenna provided on a first side of the wireless device;
at least one secondary antenna provided on a second side of the wireless device;
at least one primary power amplifier circuit configured to amplify a radio frequency, RF, signal based on a voltage for transmission via the at least one primary antenna;
at least one distributed power amplifier circuit configured to amplify the RF signal based on a distributed voltage for transmission via the at least one secondary antenna;
and
a distributed power management circuit comprising:
a distributed power management integrated circuit, PMIC, configured to generate the distributed voltage based on a distributed target voltage and provide the distributed voltage to the at least one distributed power amplifier circuit;
a main PMIC configured to:
generate and provide the voltage to the at least one primary power amplifier circuit;
and
generate the distributed target voltage and provide a low-frequency current to the distributed PMIC via a conductive path provided between the main PMIC and the distributed PMIC;
and
a deQ circuit provided between the distributed PMIC and the main PMIC and configured to resonate at a series resonance frequency to reduce a quality factor, Q-factor, of an equivalent notch collectively caused by an equivalent inductance of the conductive path and an equivalent capacitance of the main PMIC.

10 more elements

Dependencies are inferred from the claim text.

Distributed power management circuit

Life of this patent

Distributed power management circuit

Life of this patent

Abstract

Claims20