US 11,309,922 B2 · Multi-mode power management integrated circuit in a small formfactor wireless apparatus

Abstract

A multi-mode power management integrated circuit (PMIC) is provided. The PMIC includes a supply voltage circuit that generates a number of supply voltages based on an input voltage. The PMIC also includes a pair of voltage circuits each generating a respective voltage based on any of the supply voltages. In one operation mode, one of the voltage circuits is configured to generate an envelope tracking (ET) voltage and another one of the voltage circuits is configured to generate the input voltage for the supply voltage circuit. The input voltage may be generated according to a peak of the ET voltage to cause each of the supply voltages to be proportionally related to the peak of the ET voltage. Accordingly, the voltage circuit configured to generate the ET voltage can operate based on an appropriate one of the supply voltages, thus helping to improve efficiency and linearity of the voltage circuit.

Claims20

Dependent claims

A multi-mode power management integrated circuit (PMIC) comprising:

a supply voltage circuit configured to generate a plurality of supply voltages based on an input voltage;
a first voltage circuit configured to generate a first voltage at a first voltage output based on any one of the plurality of supply voltages;
a second voltage circuit configured to generate a second voltage at a second voltage output based on any one of the plurality of supply voltages;
and
a control circuit configured to, in a first operation mode:
cause a first selected voltage circuit among the first voltage circuit and the second voltage circuit to generate an envelope tracking (ET) voltage among the first voltage and the second voltage;
cause a second selected voltage circuit among the first voltage circuit and the second voltage circuit to generate a constant voltage among the first voltage and the second voltage;
and
cause the supply voltage circuit to receive the constant voltage as the input voltage.

6 more elements

A wireless apparatus comprising:

a multi-mode power management integrated circuit (PMIC) comprising:
a supply voltage circuit configured to generate a plurality of supply voltages based on an input voltage;
a first voltage circuit configured to generate a first voltage at a first voltage output based on any one of the plurality of supply voltages;
a second voltage circuit configured to generate a second voltage at a second voltage output based on any one of the plurality of supply voltages;
and
a control circuit configured to, in a first operation mode:
cause a first selected voltage circuit among the first voltage circuit and the second voltage circuit to generate an envelope tracking (ET) voltage among the first voltage and the second voltage;
cause a second selected voltage circuit among the first voltage circuit and the second voltage circuit to generate a constant voltage among the first voltage and the second voltage;
and
cause the supply voltage circuit to receive the constant voltage as the input voltage.

7 more elements

Dependencies are inferred from the claim text.

Multi-mode power management integrated circuit in a small formfactor wireless apparatus

Life of this patent

Multi-mode power management integrated circuit in a small formfactor wireless apparatus

Life of this patent

Abstract

Claims20