2006 · 119 citations · 15 references
EngineeringComputer EngineeringElectrical EngineeringField-programmable Gate ArraysPower ElectronicsReconfigurable ComputingDigital Integrated Circuit DesignDigital Signal ProcessingFpga ArchitectureHigh-frequency Power ConversionMixed-signal Integrated Circuit DesignPulse-width ModulationDigital Control Of Dc-dc ConvertersDigital Pulse-width ModulationDigital Signal Processing Blocks
The paper introduces a fully synthesizable hybrid digital pulse width modulator (DPWM). The DPWM employs a digital delay‑locked loop around a delay line with discretely programmable delay cells to maintain constant‑frequency operation across process and temperature variations, supports trailing‑edge, leading‑edge, and triangular modulation, offers two outputs with programmable dead‑times for synchronous DC‑DC converters, and is suitable for FPGA or custom chip implementation. Experimental results demonstrate a 780 kHz, 10‑bit FPGA implementation.
This paper introduces a fully synthesizable hybrid digital pulse width modulator (DPWM). The DPWM includes a digital delay locked loop around a delay-line with discretely programmable delay cells to achieve constant-frequency clocked operation with the best possible resolution over a range of process or temperature variations. The DPWM module can implement trailing-edge, leading-edge or triangular modulation. It includes two outputs with programmable dead-times, suitable for DC-DC converters with synchronous rectifiers. The DPWM module is well suited for FPGA or custom chip implementation. Experimental results are shown for a 780 KHz, 10-bit FPGA realization
15