Abstract
This paper proposes a 65nm CMOS process cascode single-inductor-dual-output (SIDO) boost converter for RF wireless power transfer (WPT) receiver. In order to withstand 4.2V Li-ion battery output, cascode 2.5V I/O PFETs are used at the power stage while 2.5V cascode NFETs are used for 1V output to supply low voltage control circuit. By using NFETs, 1V output with 5V tolerance can be achieved. Measurement results show conversion efficiency of 89% at P IN =7.9mW and V BAT =3.4V.
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