PROJECT TITLE :

Digitally Controlled Pulse Width Modulator for On-Chip Power Management (2014)

ABSTRACT :

A digitally controlled current starved pulse width modulator (PWM) is described in this paper. The current from the power grid to the ring oscillator is controlled by a header circuit. By changing the header current, the pulse width of the switching signal generated at the output of the ring oscillator is dynamically controlled, permitting the duty cycle to vary between 25% and 90%. A duty cycle to voltage converter is used to ensure the accuracy of the system under process, voltage, and temperature (PVT) variations. A ring oscillator with two header circuits is proposed to control both duty cycle and frequency of the operation. Analytic closed-form expressions for the operation of a PWM are provided. The accuracy and performance of the proposed PWM is evaluated with 22-nm CMOS predictive technology models under PVT variations. An error of less than 3.1% and 4.4% in the duty cycle, respectively, with and without constant frequency control is reported for the PWM. A constant operation frequency with less than 1.25% period variation is demonstrated. The proposed PWM is appropriate for dynamic voltage scaling systems due to the small on-chip area and high accuracy under PVT variations.


Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here


PROJECT TITLE :Digitally Assisted Analog/RF Predistorter With a Small-Signal-Assisted Parameter Identification AlgorithmABSTRACT:This paper proposes a digitally assisted analog/radio frequency predistorter (ARFPD) and a linear
PROJECT TITLE :Efficient Linear Amplification Using Digitally Predistorted Overdriven Power AmplifiersABSTRACT:This paper investigates the consequences of crest factor reduction and digital predistortion on the performances of
PROJECT TITLE :Digitally Controlled Leakage-Based Oscillator and Fast Relocking MDLL for Ultra Low Power Sensor PlatformABSTRACT:This paper presents an all-digital multiplying delay-locked loop (MDLL) with a leakage-primarily
PROJECT TITLE :Digitally Controlled Phase Shifter Using an SOI Slot Waveguide With Liquid Crystal InfiltrationABSTRACT:We demonstrate a section shifter employing a silicon slot waveguide infiltrated with liquid crystal. For a
PROJECT TITLE :Digitally Controlled Micro-LED Array for Linear Visible Light Communication SystemsABSTRACT:In an exceedingly visible light communications (VLC) system, the frequency response of the sunshine-emitting diode (LED)

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry