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US 12,308,796 B2Granted
Booster stage circuit for power amplifier
AssigneeAxign B.V.
InventorsDaniel Schinkel, Remko Van Heeswijk
Life of this patent
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Abstract
The present invention is in the field of booster stage circuit for a power amplifier, and an external supply voltage power amplifier comprising said booster stage circuit, such as for amplifying an electronic signal to a speaker system. These amplifiers may be provided with an external supply voltage.
Claims20
A booster stage circuit for a power amplifier comprising
- an electrical connector for an external power supply,
- at least one capacitor, the capacitor having a first side and a second side, the capacitor being electrically connected at the first side thereof to a first side of at least one first switch and at the second side thereof to a first side of at least one second switch, wherein each of the at least one first switch and each of the at least one second switch is adapted to operate at a switching frequency of >20 kHz, wherein each individual switch of the at least one first switch and of the at least one second switch with a second side of the respective switch is adapted to be electrically connected to the electrical connector, and wherein in a boost mode the at least one first switch is in an open status and the at least one second switch is in an closed status, and wherein in a base mode the at least one first switch is in an closed status and the at least one second switch is in an open status,
- at least one inductor at one side electrically connected to (i) the second side of the capacitor, and (ii) with the first side of the at least one of the second switch, and at the other side (iii) connected with a ground, wherein the at least one inductor has an inductance of 1 μH-20 H, and
- inputs are adapted for receiving control input from a controller for operating the at least one first switch and the at least one second switch, respectively.
1 more element
A booster stage circuit for a power amplifier comprising:
- an electrical connector for an external power supply;
- at least one capacitor, the capacitor having a first side and a second side, the capacitor being electrically connected at the first side thereof to a first side of at least one first switch and at the second side thereof to a first side of at least one second switch, wherein each of the at least one first switch and each of the at least one second switch is adapted to operate at a switching frequency of >20 kHz, wherein each individual switch of the at least one first switch and of the at least one second switch with a second side of the respective switch is adapted to be electrically connected to the electrical connector, and wherein in a boost mode the at least one first switch is in an open status and the at least one second switch is in an closed status, and wherein in a base mode the at least one first switch is in an closed status and the at least one second switch is in an open status;
- at least one inductor at one side electrically connected to (i) the second side of the capacitor, and (ii) with the first side of the at least one of the second switch, and at the other side (iii) connected with a ground, wherein the at least one inductor has an inductance of 1 μH-20 H;
- inputs being adapted for receiving control input from a controller for operating the at least one first switch and the at least one second switch, respectively;
- and
- a feedback loop.
3 more elements
Dependencies are inferred from the claim text.