Fully Integrated Linear Regulator and Rectifying Regulator for Inductively Powered Medical Implant Devices

• Main Authors: Chen, Yan-Peng., 陳彥朋
• Other Authors: Tang, Kea-Tiong
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/ffxr6e

碩士 === 國立清華大學 === 電機工程學系 === 107 === In this thesis, two types of the RX power management modules in wire-less powering systems are presented. The first one is the fully-integrated linear regulator and the other one is the single-stage rectifying regulator. In order to reduce the count of the external components of biomedical implants, which would lead to large ripple of the rectifier output voltage, a N-type pass transistor is adopted in the presented linear regulator to have intrinsic filtering ability. In addition, dual feedback topology is implemented inside presented regulator to achieve higher system bandwidth and faster transient responses. The regulator is fabricated in TSMC 0.18µm 1P6M process occupying 0.278mm2 areas including the testing rectifier. The rectifying regulator using pulse-width modulation(PWM) and pulse-frequency modulation(PFM) to accomplish single stage AC to DC regulation. Compared with conventional rectifier-LDO structure, the single stage regulator can reduce the power loss in each stage and lowering the overall quiescent power. The regulator is fabricated in TSMC 0.18µm 1P6M process occupying 0.185mm2 active areas. This rectifying regulator can regulate stable 1.05V and provides for 10mA load current at a carrier frequency of 10Mhz.