A ۱۳۰ nm CMOS Integrated Circuit Design the reconfigurable rectifier and linear regulator for A wireless power receiver

In this paper, a wireless power transfer receiver is provided using a reconfigurable rectifier and a three-loop linear LDO۱ regulator. The use of common rectifiers, ie, diodes, does not appear due to the high threshold voltage, the voltage conversion rate, or the proper output power. Therefore, in this scheme, active diodes instead of ordinary diodes, so that the rectifier works in less VAC, is preferable given. In this paper, a fully integrated ۱X/۲X rectifier is first provided in the range of ۳۰ mW with all capacitors built into the chip. On the other hand, using a key arrangement in the chip, a suitable arrangement can be made in both ۱X and ۲X modes, so that the output capacitance difference in both modes is C۴ and C۳, respectively. Due to the need to adjust the voltage in different quantities, the simplest way is to use a linear regulator. In this design, a linear regulator of a three-ring LDO with a PMOS transistor, with a gain loop and an impedance reduction buffer (internal polar displacement to high frequencies) is presented. The results obtained from the scheme are in the range of the input voltage of ۴-۱.۲۵ having output power of ۳۲ mW and the VCR۲۱ in the conditions of RL=۵ KΩ, in the ۲X/۱X modes are ۰.۷۸-۰.۸۸ and ۱.۳-۱.۶ respectively And under similar conditions, the PCE۳۲ in both ۲X/۱X is ۷۵-۹۰% and ۶۸-۸۲%, respectively. Finally, the output results in RL=۱۰۰ Ω, with output variations of ۱۰ mV in the range of ۱۰μA-۱۰ mA load current and FOM۴, ۶.۱۱ ps. With regard to the results obtained from the power output and load variation and output voltage, this design is suitable for medical applications with a power range between ۱۰-۱۰۰ mW.

Keywords:

Wireless Power Transmission , Active Rectifier , Configurable Rectifier , LDO Regulator , Inductive Resonant Coupling