Switching transducer driver
AssigneeCirrus Logic International Semiconductor Ltd.
InventorJohn P. LESSO
Life of this patent
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Abstract
Switching transducer driver circuitry for driving a load, the switching transducer driver circuitry comprising: output stage circuitry comprising: a first output stage switch operable to couple the load to a first voltage supply; a second output stage switch operable to couple the load to a second voltage supply; and a third output stage switch operable to couple the load to a controllable third voltage supply, wherein a voltage level of the controllable third voltage supply is based on an input signal to the switching amplifier circuitry.
Claims19
Switching transducer driver circuitry for driving a load, the switching transducer driver circuitry comprising:
- output stage circuitry comprising:
- a first output stage switch operable to couple the load to a first voltage supply;
- a second output stage switch operable to couple the load to a second voltage supply;
- and
- a third output stage switch operable to couple the load to a controllable third voltage supply,
- wherein a voltage level of the controllable third voltage supply is based on an input signal to the switching amplifier circuitry.
A combined output stage and DC-DC converter integrated circuit (IC), the combined output stage and DC-DC converter IC comprising:
- a switch network for a DC-DC converter;
- a first output stage switch operable to couple a load to a first voltage supply;
- a second output stage switch operable to couple the load to a second voltage supply;
- and
- a third output stage switch operable to couple the load to a controllable third voltage supply,
- wherein the controllable third voltage supply is supplied by the DC-DC converter.
Dependencies are inferred from the claim text.