Stochastic pulse density modulation for a power LED driver

Authors

  • Wojciech Wojtkowski Bialystok University of Technology
  • Rafał Kociszewski Bialystok University of Technology

DOI:

https://doi.org/10.4302/plp.v12i2.1027

Abstract

PWM signals are widely used and are easy to implement in a variety of LEDs applications, however they suffer from significant harmonic generation. As an alternative, SPDM - Stochastic Pulse Density Modulation or SSDM – Stochastic Signal Density Modulation ideas may be considered. The SPDM idea is to spread the energy at different frequencies so that it is easier to filter the desired harmonics, because of their lower amplitudes. Example of implementation of SPDM in LED application using a programmable system-on-chip device is presented in the paper. Proper operation of the proposed implementation is proved by the laboratory results.

Full Text: PDF

References
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Published

2020-07-01

How to Cite

[1]
W. Wojtkowski and R. Kociszewski, “Stochastic pulse density modulation for a power LED driver”, Photonics Lett. Pol., vol. 12, no. 2, pp. 64–66, Jul. 2020.

Issue

Vol. 12 No. 2 (2020)

Section

Articles

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