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This paper presents a half-bridge driver to fulfill the requirement for interfacing with MEMs sensors. The upper switch of the driver is implemented by a p-type power transistor to make the driver feasible for pulse density modulated input signal. The high-side “ground” reference voltage VSSH is regulated through the proposed charge pump circuit, which harvests the charges flowing into the VSSH node...
Driven by the proliferation of implantable and self-powered electronic devices, low-voltage, low-power, high-efficiency DC-DC power converters are on high demands. This paper first reviews the state-of-the-arts charge pumps, with focus on power loss minimization, power stage architectures and control signaling. A new four-phase complimentary charge pump is then proposed. By employing the techniques...
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