| Autor: |
Ahmed Hussien, Edgar Sanchez-Sinencio, Ahmed N. Mohieldin, Ahmed Emira, Moataz AbdElFattah |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
NEWCAS |
| DOI: |
10.1109/newcas.2012.6329036 |
| Popis: |
In this paper, an efficient ultra-low-voltage PMU working for TEG input voltages as low as 200mV is proposed. The PMU core, charging an energy buffer, employs a main DC/DC converter. It consists of a cascade of two Dickson-based charge pumps with a variable conversion factor and switching frequency. Feedback is provided from the load buffer by means of a current sensor to a control unit that maximizes the overall power transfer efficiency at low input voltages. System simulation results demonstrate a peak efficiency greater than 70% with a controller current consumption less than 2µA. The PMU core was simulated in Cadence environment using a UMC CMOS 180nm process and the layout of the basic core building blocks is presented. The fully-integreable design consumes an area of approximately 30mm2. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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