Power amplifier and vehicle audio system
AssigneeAutochips Wuhan Co., Ltd.
InventorXianfeng Xiong
Life of this patent
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Abstract
A power amplifier includes: at least two first bridge type amplifying circuits and at least two second bridge type amplifying circuits; the negative pole of the first load of each first bridge type amplifying circuit is respectively coupled to the positive stage of the second load of each second bridge type amplifying circuits through a gating circuit. When both a first input signal input into one of the at least two first bridge type amplifying circuits and a second input signal input into one of the at least two second bridge type amplifying circuits are less than a preset threshold, the gating circuit is turned on, so that the one of the at least two first bridge type amplifying circuits and the one of the at least two second bridge type amplifying circuits can share load current by the gating circuit.
Claims20
A power amplifier, comprising:
- at least two first bridge type amplifying circuits, wherein each of the at least two first bridge type amplifying circuits comprises a first signal input terminal;
- and
- at least two second bridge type amplifying circuits, wherein each of the at least two second bridge type amplifying circuits comprises a second signal input terminal;
- wherein a negative pole of a first load of each of the at least two first bridge type amplifying circuits is respectively coupled to a positive pole of a second load of each of the at least two second bridge type amplifying circuits through a gating circuit;
- in response to that both a first input signal input from the first signal input terminal of one of the at least two first bridge type amplifying circuits and a second input signal input from the second signal input terminal of one of the at least two second bridge type amplifying circuits are less than a preset threshold, the gating circuit is turned on, so that the one of the at least two first bridge type amplifying circuits and the one of the at least two second bridge type amplifying circuits can share load current by the gating circuit.
A vehicle audio system, comprising:
- a power amplifier comprising:
- at least two first bridge type amplifying circuits, wherein each of the at least two first bridge type amplifying circuits comprises a first signal input terminal and a first speaker;
- and
- at least two second bridge type amplifying circuits, wherein each of the at least two second bridge type amplifying circuits comprises a second signal input terminal and a second speaker;
- wherein a negative pole of a first speaker of each of the at least two first bridge type amplifying circuits is respectively coupled to a positive pole of a second speaker of each of the at least two second bridge type amplifying circuits through a gating circuit;
- in response to that both a first input signal input from the first signal input terminal of one of the at least two first bridge type amplifying circuits and a second input signal input from the second signal input terminal of one of the at least two second bridge type amplifying circuits are less than a preset threshold, the gating circuit is turned on, so that the one of the at least two first bridge type amplifying circuits and the one of the at least two second bridge type amplifying circuits can share load current by the gating circuit.
A power amplifier, comprising:
- at least four bridge type amplifying circuits, wherein each of the at least four bridge type amplifying circuits comprises a signal input terminal;
- wherein each two of the at least four bridge type amplifying circuits are coupled to each other through a gating circuit, and the gating circuit is respectively coupled to a negative pole of a first load of one of the each two of the at least four bridge type amplifying circuits and a positive pole of a second load of the other one of the each two of the at least four bridge type amplifying circuits;
- in response to that both input signals input from the signal input terminals of the each two of the at least four bridge type amplifying circuits are less than a preset threshold, the gating circuit is turned on, so that the each two of the at least four bridge type amplifying circuits can share load current by the gating circuit.
Dependencies are inferred from the claim text.