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1. 发明申请

US20150002231A1 QUIESCENT CURRENT EQUALIZATION METHOD, OUTPUT STAGE CIRCUIT, CLASS AB AMPLIFIER AND ELECTRONIC DEVICE 有权
标题翻译： QUIESCENT电流均衡方法，输出级电路，AB类放大器和电子设备
公开(公告)号：US20150002231A1
公开(公告)日：2015-01-01
申请号：US14315663
申请日：2014-06-26
申请人： Fairchild Semiconductor Corporation
发明人： Lei HUANG , Peng YANHAO
IPC分类号： H03F3/21 , G05F1/56
CPC分类号： H03F3/345 , H03F1/301
摘要： An output stage circuit is provided, which includes a power supply, a quiescent current control circuit, an output circuit, and a quiescent current equalization circuit. The quiescent current equalization circuit is configured to decrease or increase a quiescent current flowing through a quiescent current biasing circuit in the quiescent current control circuit when a change of a voltage of the power supply is detected, such that a quiescent current flowing through the output circuit remains constant. A quiescent current equalization method, a Class AB amplifier and an electronic device are also provided. When the voltage of the power supply is increased, the quiescent current of the output circuit of the output stage circuit can maintain constant. As such, the power supply rejection ratio (PSRR) of the output circuit can be efficiently increased and the power consumption of the device can be reduced.
摘要翻译：提供一种输出级电路，其包括电源，静态电流控制电路，输出电路和静态电流均衡电路。静态电流均衡电路被配置为当检测到电源的电压变化时，降低或增加流过静态电流控制电路中的静态电流偏置电路的静态电流，使得流过输出电路的静态电流保持不变。还提供了静态电流均衡方法，AB类放大器和电子器件。当电源电压增加时，输出级电路的输出电路的静态电流可以保持恒定。因此，可以有效地提高输出电路的电源抑制比（PSRR），并且可以降低器件的功耗。

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