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Digital control has significantly advanced in the last decade enabling the implementation of higher performance controllers using digital devices such as microcontrollers, DSPs or FPGAs. The design and implementation of controllers using FPGAs is often a challenging and time-consuming task. In order to improve this process, high level synthesis tools allow the use of high-level programming languages,...
This paper presents the implementation of a digital controller in an FPGA for a switching power converter. The digital controller is described using a Hardware Description Language (VHDL) and uses floating point arithmetic what makes straightforward the implementation with regard to fixed-point implementations. The use of the recently approved VHDL 1076-2008 standard that includes a floating point...
Domestic induction cookers operation is based on a resonant inverter which supplies medium-frequency currents (20-100 kHz) to an inductor, which heats up the pan. The variable load that is inherent to this application requires the use of a reliable and load-adaptive control algorithm. In addition, a wide output power range is required to get a satisfactory user performance. In this paper, a control...
Digital controllers implemented in an FPGA for switching power converters are becoming an important alternative to the traditional analog solutions. Assuming that the digital controller is described using a hardware description language (VHDL), the ADVance MS mixed-signal simulation tool is used to simulate in closed loop the digital controller in order to analyze the finite word-length effects. The...
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