Memorias de investigación
Communications at congresses:
Highly Efficiente and Compact GaN-Based Tracking Power Supply System for Linear Power Amplifiers
Year:2019

Research Areas
  • Electric engineers, electronic and automatic (eil)

Information
Abstract
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
International
Si
Congress
IEEE Applied Power Electronics Conference and Exposition (APEC)
960
Place
Anaheim, CA, USA, USA
Reviewers
Si
ISBN/ISSN
1048-2334
10.1109/APEC.2019.8721957
Start Date
17/03/2019
End Date
21/03/2019
From page
431
To page
436
Highly Efficiente and Compact GaN-Based Tracking Power Supply System for Linear Power Amplifiers
Participants

Research Group, Departaments and Institutes related
  • 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