A Novel Integrated Step-Up Hybrid Converter with Wide Conversion Ratio
| Autor: | Andrea Bevilacqua, Giorgio Spiazzi, Maurizio Galvano, Stefano Marconi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Discrete mathematics Charge pump circuits dc-dc converters hybrid converters integrated dc-dc LED driver 020208 electrical & electronic engineering Topology (electrical circuits) 02 engineering and technology Inductor law.invention Capacitor Cover (topology) law Boost converter 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering AND gate Voltage |
| Popis: | In this paper, a novel topology combining reconfigurability and hybridization is presented. Reconfigurability allows the proposed converter to operate in three different operating modes, yielding a wide range of step-up conversion ratios. The combination of two charge-pump cells and an inductor allows to reduce the average inductor current if compared to a standard equivalent boost converter. A prototype with integrated MOS, drivers, and logic but external passives was built. Experimental results show that with $\mathbf {f_{s} }=\text{300}\,$ kHz, $\mathbf {V_{in} = \text{6}}\,$ V, and $\mathbf {I_o = \text{70}}\,$ mA, the converter can cover conversion ratios in the range from $\text {2.5}$ to $\text {10}$ , with a maximum output voltage equal to $\text {60}\,$ V. Peak efficiency is $\text {91}$ %. When the output current is increased to $\text {100}\,$ mA peak efficiency is $\text {92.8}$ %. |
| Databáze: | OpenAIRE |
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