Integrated ADC and Low Noise PLL with Low-dropout Regulator for Transformer Coupler Quadrature Hybrid Wireless Charging

The proposed integrated wireless power coupler consists of successive-approximation analog to digital converter (SAR ADC), phase locked loop (PLL), wide bandgap voltage reference (WBGR) and low-dropout regulator (LDO). The integrated wireless power coupler uses transformer-based quadrature hybrid are fully utilized to final tune the layout dimension and insertion loss as the resonator for wireless power coupler. The proposed design is successfully implemented at the performance of 10-bits ADC Code with neural network (NN). The experimental results are in good agreement with the measured wireless power transfer efficiencies (PTEs) and show that by charging the buck switching regulator output can be effectively achieved in low-dropout regulator low noise and radio frequency interference.