TY - GEN
T1 - A 13.56MHz wireless power transfer system with dual-output regulated active rectifier for implantable medical devices
AU - Yang, Fu Bin
AU - Fuh, Jonathan
AU - Chen, Po-Hung
PY - 2019/1/22
Y1 - 2019/1/22
N2 - In this paper, a 13.56 MHz wireless power transfer system with dual-output regulated active rectifier is developed for implantable medical devices. The rectifier employs pulse-skip modulation (PSM) to regulate two output voltages without using power consuming low dropout regulators (LDOs). The proposed automatic digital offset compensation adjusts both turn-on timing and turn-off timing to compensate the turn-on and turn-off delays of the comparator. The simulation results show that the proposed active rectifier achieves 94% efficiency. The entire wireless power transmission system including power amplifier, resonant tanks, and rectifier, has 67.2% maximum power conversion efficiency (PCE). Compared to the conventional approach with ideal LDOs, 19.2% efficiency improvement is obtained.
AB - In this paper, a 13.56 MHz wireless power transfer system with dual-output regulated active rectifier is developed for implantable medical devices. The rectifier employs pulse-skip modulation (PSM) to regulate two output voltages without using power consuming low dropout regulators (LDOs). The proposed automatic digital offset compensation adjusts both turn-on timing and turn-off timing to compensate the turn-on and turn-off delays of the comparator. The simulation results show that the proposed active rectifier achieves 94% efficiency. The entire wireless power transmission system including power amplifier, resonant tanks, and rectifier, has 67.2% maximum power conversion efficiency (PCE). Compared to the conventional approach with ideal LDOs, 19.2% efficiency improvement is obtained.
KW - Active rectifier
KW - Automatic digital offset compensation
KW - Implantable medical devices
KW - Pulse skip modulation
KW - Resonant coupling
KW - Wireless power transfer
UR - http://www.scopus.com/inward/record.url?scp=85062214971&partnerID=8YFLogxK
U2 - 10.1109/MWSCAS.2018.8624004
DO - 10.1109/MWSCAS.2018.8624004
M3 - Conference contribution
AN - SCOPUS:85062214971
T3 - Midwest Symposium on Circuits and Systems
SP - 440
EP - 443
BT - 2018 IEEE 61st International Midwest Symposium on Circuits and Systems, MWSCAS 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 61st IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2018
Y2 - 5 August 2018 through 8 August 2018
ER -