Design of DC-DC Boost Converter Using PFM Switching Technique

An efficient Power management block that utilizes Pulse Frequency Modulation for Thermal Energy harvested applications is presented. The following paper focuses on energy harvesting applications, specifically thermoelectric generation (TEG), which produces a voltage that acts as an input to DCDC boo...

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Bibliographic Details
Published in2023 IEEE Devices for Integrated Circuit (DevIC) pp. 368 - 371
Main Authors Naaz, Maliha, Fatima, Kaleem, Naik, B.Rajendra, Sayeed, Shaik Abu Anzar, Ahmed, Syed Saquib, Ashher, Mohammed Shahzaib
Format Conference Proceeding
LanguageEnglish
Published IEEE 07.04.2023
Subjects
charge pump
Control systems
DC-DC Boost converter
Frequency modulation
Maximum power point trackers
PFM
Simulation
Switches
switching
TEG
Transistors
VCO
Voltage-controlled oscillators
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Summary:An efficient Power management block that utilizes Pulse Frequency Modulation for Thermal Energy harvested applications is presented. The following paper focuses on energy harvesting applications, specifically thermoelectric generation (TEG), which produces a voltage that acts as an input to DCDC boost converters. The small voltages generated by TEG are amplified by controlling the transistor (used in boost converter) using an efficient duty cycle through Pulse Frequency Modulation (PFM). PFM block includes a voltage divider, comparator, charge pump, filter, and VCO. These blocks control the transistors, there by enhancing the DC-DC boost converter's overall efficiency. The Circuits were simulated using Cadence 180nm technology. An output voltage of approximately 900 mV was achieved with a relatively low input voltage of only 100 mV when the entire block was simulated.
DOI:10.1109/DevIC57758.2023.10134869