Abstract
This paper presents a highly efficient switched capacitor (SC) DC-DC converter, which is implemented in a 65nm low power CMOS process to enable SoC integration. The converter supplies a nominal output current of 30mA with an efficiency of 95%. The buck converter operates with a constant input voltage of 1.83V and produces an output voltage of 1.2V. The charge is transported in two phases from the input supply to the output capacitor. Therefore, a network consisting of switches and two so-called flying capacitors are used. This converter is intended to be used in power management units for mobile devices and to substitute complex and expensive inductor based DC-DC converters. A test chip was designed in collaboration with Infineon Technologies Austria AG. The measurement results are presented and give for an output current of 10mA a peak efficiency of 97%.
| Original language | English |
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| Pages | 1351-1354 |
| Number of pages | 4 |
| Publication status | Published - 2011 |
| Event | IEEE International Symposium on Circuits and Systems: ISCAS 2011 - Rio de Janeiro, Brazil Duration: 15 May 2011 → 18 May 2011 http://www.fpl.uni-kl.de/rio/www.iscas2011.org/index.htm |
Conference
| Conference | IEEE International Symposium on Circuits and Systems |
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| Abbreviated title | ISCAS |
| Country/Territory | Brazil |
| City | Rio de Janeiro |
| Period | 15/05/11 → 18/05/11 |
| Internet address |