Near-Field Wireless Power Integrated Circuit with High PSR Low Dropout Regulator

• Main Authors: Ralph Eric Castillo Tatlonghari, 王羅夫
• Other Authors: Dr. Hong-Yi Huang
• Format: Others
• Language: en_US
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/88088646155261748503

碩士 === 國立臺北大學 === 電機工程研究所 === 100 === Near-field wireless power transmission is widely used in RFID and biomedical applications. A high PSR regulator is a requirement for biomedical circuits and systems. High PSR regulator can suppress the power supply noise which can have large variations of amplitude and of different frequencies to be able to provide a more stable output and reduced ripple. Moreover, with the advancement of process technologies for low power applications, a reliable and efficient power integrated circuit not only to provide a stable supply but also to maximize efficiency becomes a design challenge. This work presents a near-field wireless power integrated circuit without external capacitors where the only external component is the coupling coil. The output ripple is minimized by utilizing a high PSR low dropout regulator using a cascode structure. The measurement results show that the receiver can generate a stable 1.8V DC output voltage to supply 1mA output current. The output voltage ripple is 8.8mV Vpp. The test chip is implemented by TSMC 0.18μm 1P6M process and the chip area is 0.751 0.968 mm2.