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Ponencias en congresos:
Highly Efficiente and Compact GaN-Based Tracking Power Supply System for Linear Power Amplifiers
Áreas de investigación
  • Ingeniería eléctrica, electrónica y automática
Linear power amplifiers (LPA) are the preferred option in industrial applications whenever an excellent linearity, low noise operation and good stability margin are needed. The power losses of a LPA can be significantly reduced by employing switched-mode power converters to modulate its supply rails. Regarding the power devices, for a more compact solutions Enhancement-mode Gallium-Nitride High-electron-mobility Transistors (GaN E-HEMTs) are the better choice compared to the conventional Silicon (Si) devices with the same voltage rating and on-state resistance since the parasitic capacitances of GaN transistors are lower up to 10 times. Although their turn-off energy is very small, for the high switching speeds ZeroVoltage Switching (ZVS) is preferable to avoid the turn-on power losses, especially in the application where the devices operate at MHz switching frequencies and where the blocking voltages are relatively high. In this paper, an 8 W, 1 MHz switching frequency, with 80 V of output voltage swing, fully digitally controllable bipolar tracking power supply (TPS) is shown. The designed small signal bandwidth is 100 kHz and the tracking speeds reach up to 2 V/µs. The maximum efficiency of the TPS is beyond 94 % while the power stage of the TPS occupies less than 10 cm
Nombre congreso
IEEE Applied Power Electronics Conference and Exposition (APEC)
Tipo de participación
Lugar del congreso
Anaheim, CA, USA, USA
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Título de las actas
Highly Efficiente and Compact GaN-Based Tracking Power Supply System for Linear Power Amplifiers
Esta actividad pertenece a memorias de investigación
  • Autor: Vladan Lazarevic (UPM)
  • Autor: Iñigo Zubitur Sasturain (UPM)
  • Autor: Miroslav Vasic Matic (UPM)
  • Autor: Jesus Angel Oliver Ramirez (UPM)
  • Autor: Pedro Alou Cervera (UPM)
  • Autor: Jose Antonio Cobos Marquez (UPM)
  • Autor: Eric Boere (APEX Microtechnology)
  • Autor: Jens Eltze (APEX Microtechnology)
  • Autor: Gregory Patchin (APEX Microtechnology)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Electrónica Industrial
  • Centro o Instituto I+D+i: Centro de Electrónica Industrial. CEI
  • Departamento: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
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