Design and Implementation of Boost Charge Pump Circuit of Energy Harvesting System
| Autor: | Chang, Chien-Chih, 張建智 |
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| Rok vydání: | 2009 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 97 The paper presents an Energy Harvesting System based on Charge Pump DC/DC converter. At the beginning, introduce to the Energy Harvesting System, including an Energy Source, an AC/DC converter, a DC/DC converter and an Energy Storage. Review technical literatures, and realize the voltage and the power range of application products. It is designed from several mW to tens of mW. Charge Pump is a boost circuit without inductance, also called non-inductance switching DC/DC converter. It is important for portable power supply design. The paper firstly states the Charge Pump theorem and the design method. Then use the power simulation software to simulate the circuit. Implement the output voltage is twice of the input voltage in the Energy Harvesting System by hardware circuit. The dimension is 32mm×32mm. The experiment divides into three parts: the gate driver measurement, the voltage transfer measurement, and the Energy Harvesting System measurement. We know MOSFET driver IC exports correct waveforms and avoids cross-conduction in the gate driver measurement. We know the charge process of Charge Pump DC/DC converter in the voltage transfer measurement. The Energy Harvesting System measurement divides into normal input voltages and low input voltages by DC power supply. Then use a hand generator as an Energy Source and Energy is stored in the storage device through the converting circuit. By the circuit analysis and the stable control of MOSFET switches, we can obtain the good storage efficiency: When input voltages are greater than 4V, the efficiency of Energy Harvesting System exceeds 67%. When input is low voltages, the efficiency of Charge Pump DC/DC converter is about 98%. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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