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引用次数: 3
摘要
本文提出了一种结合有源整流器和线性调节器的电路，称为整流器。整流器中的主晶体管既用于交流输入(VAC)的整流，又用于直流输出(VO)的调节，以减小VAC和VO之间的总体压降。该调压器具有较高的功率效率(ηP)和对交流场强变化的良好抑制幅度调制(AM)。采用0.18μm CMOS工艺实现的全波整流器，在输入频率为5MHz, VO = 2.5V，输出功率为10.5mW时，在调幅频率P为90.7%的情况下，调幅抑制bb0 45dB。
An active rectifier/regulator combo circuit for powering biomedical implants
A circuit that combines an active rectifier and a linear regulator, which will be referred to as a rectulator, is proposed in this paper. The main transistor in the rectulator is used for both the rectification of the AC input (VAC) and the regulation of the DC output (VO) to reduce the overall voltage drop between VAC and VO. The rectulator has a high power efficiency (ηP) and very good amplitude modulation (AM) rejection on VAC against AC field strength variations. A full-wave rectulator implemented in a 0.18μm CMOS process showed an AM rejection > 45dB for an AM frequency <; 2kHz. A ηP of 90.7% was measured for an input frequency of 5MHz, VO = 2.5V and an output power of 10.5mW.
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