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This paper introduces a digital PWM control of the KY step-up converter based on frequency domain sigma-delta (ΣΔ) analog-to-digital converter (ADC), in which we deduce the mathematical modeling of the KY step-up converter and the frequency-domain digitization technique based on the first-order non-feedback sigma-delta frequency discriminators (NF-SDFD). Then, the digital control of the KY converter...
This paper introduces a digital PWM control of the KY step-up converter based on sigma-delta modulator, in which the mathematical modeling of the KY step-up converter and sigma-delta modulator are deduced. Then the digital control of KY converter with sigma-delta modulator, integrator and dumper, and digital to duty cycle converter has been successfully built in MATLAB Simulink to verify the idea...
A low-power PPM demodulator has been developed for remotely powered batteryless implantable devices. The required power is harvested by the magnetic coupling with external powering coils placed under the living space of the animal. The remote powering is turned off only 1% of a bit duration during data transmission. The PPM demodulator consumes only 22.7 µW at 1.8 V and has 5.55 kb/s data rate. Entire...
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