Digital PWM control of high-frequency DC-DC switched-mode power converters

2016 ◽  
pp. 77-101
Author(s):  
Corradini
Keyword(s):  
High Frequency ◽  
Power Converters ◽  
Pwm Control

scholarly journals Parasitic Loop Inductances Reduction in the PCB Layout in GaN-Based Power Converters Using S-Parameters and EM Simulations

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1495
Author(s):  
Loris Pace ◽  
Nadir Idir ◽  
Thierry Duquesne ◽  
Jean-Claude De Jaeger
Keyword(s):  
High Frequency ◽  
Printed Circuit Board ◽  
Power Converters ◽  
Calibration Procedure ◽  
Circuit Board ◽  
Design System ◽  
Switching Speed ◽  
Parasitic Inductance ◽  
Frequency Converters ◽  
S Parameters

Due to the high switching speed of Gallium Nitride (GaN) transistors, parasitic inductances have significant impacts on power losses and electromagnetic interferences (EMI) in GaN-based power converters. Thus, the proper design of high-frequency converters in a simulation tool requires accurate electromagnetic (EM) modeling of the commutation loops. This work proposes an EM modeling of the parasitic inductance of a GaN-based commutation cell on a printed circuit board (PCB) using Advanced Design System (ADS®) software. Two different PCB designs of the commutation loop, lateral (single-sided) and vertical (double-sided) are characterized in terms of parasitic inductance contribution. An experimental approach based on S-parameters, the Cold FET technique and a specific calibration procedure is developed to obtain reference values for comparison with the proposed models. First, lateral and vertical PCB loop inductances are extracted. Then, the whole commutation loop inductances including the packaging of the GaN transistors are determined by developing an EM model of the device’s internal parasitic. The switching waveforms of the GaN transistors in a 1 MHz DC/DC converter are given for the different commutation loop designs. Finally, a discussion is proposed on the presented results and the development of advanced tools for high-frequency GaN-based power electronics design.

A new PWM control method for AC to DC converters with high-frequency transformer isolation

1993 ◽  
Vol 29 (3) ◽  
pp. 486-492 ◽  
Author(s):  
K. Inagaki ◽  
T. Furuhashi ◽  
A. Ishiguro ◽  
M. Ishida ◽  
S. Okuma
Keyword(s):  
High Frequency ◽  
Control Method ◽  
Pwm Control ◽  
High Frequency Transformer
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