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A voltage-mode Buck converter with a novel pseudo-type III compensation is presented. It maintains the fast load transient response, as confirmed by the measured loop gain, and 7 mus settling time for 500 mA load current step. It also transforms the type III compensator into a summation of an area- and power-efficient error amplifier plus a low-power band-pass filter. Consequently, the area and power...
This paper presents switched-capacitor bandpass filters used within the sense system of implantable medical devices such as cardiac pacemakers and defibrillators. This work examines the methods; including filter architecture, discrete-time transformation, and operational amplifier (opamp) topology; to reduce current consumption and to lower supply voltages for switched capacitor filters to reach nano-watt...
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