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In near-field electromagnetic links, the inductive voltage is usually much larger than the compliance of low-voltage integrated-circuit (IC) technologies used for the implementation of implantable devices. Thus most integrated power-recovery approaches limit the induced signal to low voltages with inefficient shunt regulation or voltage clipping. In this paper, we propose using high-voltage (HV) complementary...
This work presents the implementation of a CMOS Linear Voltage Regulator (LVR) used to power up bio-implanted systems. The topology is based on a classical structure of a Low Dropout Regulator (LDO) and receives his activation energy from a RF link characterizing a passive RFID tag. The LVR was designed to achieve important features like low power consumption, and a small silicon area without the...
A novel current recycling dual linear regulating power supply is proposed in this paper. In systems, such as biomedical implants, requiring a high actuation supply voltage and a number of lower supply voltages generated by linear regulators, our technique allows the linear regulators to be stacked, effectively reducing the overall current consumption to that of a single regulator. We design a dual...
For most implantable biomedical devices, inductive power is an important alternative to the limited lifetime batteries. In case of a near-field inductive link, the induced voltage is usually much larger than the compliance of low-voltage integrated circuit (IC) technologies. Most power recovery approaches limit the voltage with inefficient shunt regulation, or voltage clipping. In this paper, a step-down...
Wirelessly powered implantable biomedical devices require a near-field inductive link to provide enough power for high current stimulation of large electrode-nerve impedances. In that situation, the induced voltage may be much larger than the compliance of low-voltage integrated circuits, especially during low-load conditions. In fact, most power recovery approaches limit the voltage with an inefficient...
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