K. Nielsen, "PEDEC---A novel pulse referenced control method for high quality digital PWM switching power amplification," in Proc. IEEE Power Electron. Spec. Conf., 1998, pp. 200--207.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....the growing use of digital audio in compact disks (CDs) DVDs, movie soundtracks, broadcasting, and computer applications, it is natural to pursue an entirely digital PWM process. Several groups are exploring digital implementations of PWM for audio amplifier applications [9] 10] 11] 12] [13], 14] High quality digital PWM processes have been considered for more than a decade [15] although much of the work has not included the switching power stage. Only a few results at the power stage output have been reported [11] 14] with significant power levels only in [11] In any case, it ....

....a feedback process based on the intended analog output signal. Through a determination of whether the output should be higher or lower, the pulse widths can be adjusted one bit at a time until optimum performance is obtained. The process is similar in some ways to correction methods described in [13]. 5 Experimental Results The hardware stage is shown in Figs. 7 and 8. Fig. 7 shows a commercial DSP development board which processes a digital optical signal. The PWM conversion board comprises an FPGA that performs the realtime algorithm. The output is then delivered to the inverter stage at ....

K. Nielsen, "PEDEC - A novel pulse referenced control method for high quality digital PWM switching power amplification," Rec. IEEE Power Electronics Specialists Conf., pp. 200--207, 1998. 30

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K. Nielsen, "PEDEC---A novel pulse referenced control method for high quality digital PWM switching power amplification," in Proc. IEEE Power Electron. Spec. Conf., 1998, pp. 200--207.

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