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An unconditionally stable Voltage Regulator

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4 Author(s)
Crepaldi, P. ; Univ. Fed. de Itajuba, Itajuba, Brazil ; Pimenta, T. ; Moreno, R. ; Rodriguez, E.C.

This paper describes a CMOS implementation of a Linear Voltage Regulator (LVR) used to power implanted systems. The topology is based on a classical structure of a Low Dropout Regulator (LDO) and receives his activation energy from a RF link characterizing a passive RFID tag. The LVR was designed to achieve important features like low power consumption, and a small silicon area without the need for any external discrete components. The project was implemented in a 0.35 μm CMOS process and a prototype was tested to validate the overall performance. The LVR output is regulated at 1V and supplies a maximum load current of 0.5 mA @ 37°C. The load regulation is 13 mV/mA and the line regulation is 39 mV/V. The LVR total power consumption is 1.2 mW.

Published in:

Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on

Date of Conference:

6-9 Dec. 2010