High efficiency GaN switching converter IC with bootstrap driver for envelope tracking applications

@article{Hong2013HighEG,
  title={High efficiency GaN switching converter IC with bootstrap driver for envelope tracking applications},
  author={Young-Pyo Hong and Kenji Mukai and Hamed Gheidi and Shintaro Shinjo and Peter M. Asbeck},
  journal={2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)},
  year={2013},
  pages={353-356}
}
In this paper, we report a DC/DC converter based on GaN HEMT's with a switching frequency of 200 MHz that can be used to generate envelope-modulated power supply voltages for use in envelope tracking power amplifiers. The converter consists of switching circuits using 0.25-um GaN HEMTs, inductor, and low pass filter, and can provide output voltages above 28V. An integrated bootstrap driver of the switching circuits is employed in order to reduce DC power consumption of the driver stage… CONTINUE READING
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