Switching amplifier
AssigneeSony Semiconductor Solutions Corporation
InventorYoshikatsu Jingu
Life of this patent
Estimating the term…
Abstract
The present invention increases the output voltage of a switching amplifier in a situation where the power supply voltage is limited. The switching amplifier includes first and second switches that are turned on and off in a complementary manner, and a capacitance, both ends of which serve as inputs to a power combiner. Both ends of the capacitance are connected to output ends of the first and second switches. The capacitance is supplied with power along with the operation of the first and second switches. As a result, an electric charge in the capacitance is used as a charge pump, and is used alternatingly for boosting or stepping down the output voltage depending on the operation frequency of the switching amplifier, thereby generating a rectangular voltage with a controlled wave height.
Claims12
A switching amplifier, comprising:
- a first switch that includes:
- an input end connected to a power supply terminal;
- and
- an output end;
- a second switch that includes:
- an input end connected to a ground terminal;
- and
- an output end,
- wherein the first switch and the second switch are configured to turn on and turn off in a complementary manner;
- and
- a capacitance that includes:
- a first end connected to the output end of the first switch;
- and
- a second end connected to the output end of the second switch, wherein the capacitance is configured to receive power from a power supply.
A switching amplifier, comprising:
- a first switch that includes:
- an input end connected to a power supply terminal;
- and
- an output end;
- a second switch that includes:
- an input end connected to a ground terminal;
- and
- an output end,
- wherein the first switch and the second switch are configured to turn on and turn off in a complementary manner;
- a capacitance that includes:
- a first end connected to the output end of the first switch;
- and
- a second end connected to the output end of the second switch, wherein
- the capacitance is configured to receive power from a power supply;
- a first impedance element connected between the second end of the capacitance and the power supply terminal;
- and
- a second impedance element connected to the first end of the capacitance and the ground terminal.
Dependencies are inferred from the claim text.