A Regulated Pulse Current Driving Technique in Green Laser Synthesis With Electrical to Optical Conversion Efficiency Improvement for Mobile Projectors

Lin, Ming-Shian; Chen, Chern‐Lin; Peng, Lung‐Han

doi:10.1109/jdt.2013.2262920

Cited by 2 publications

(2 citation statements)

References 27 publications

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“…Therefore, low electromagnetic interference (EMI) is an important issue for design consideration [1]. A regulated pulse current driver was presented to drive a LED [2] and a laser diode [3] in consumer electronic products. However, fast switching, which produces a series of pulse currents, would result in higher EMI [4].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, a VCO with triangular wave modulation is adopted in the regulated pulse current driver. The detailed circuit description of the regulated pulse current driver is mentioned in the work of [3]. This paper will briefly introduce the structure of the regulated pulse current driver and further describe the VCO with triangular wave modulation applied in the driver.…”

Section: Introductionmentioning

confidence: 99%

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A Regulated Pulse Current Driver with Spread Spectrum Clock Generator

Lin

2021

Electronics

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This paper presents a regulated pulse current driver with a spread spectrum clock generator (SSCG) to lower the electromagnetic interference (EMI) effect. An SSCG is used and implemented by applying a triangular wave to modulate a voltage-controlled oscillator (VCO). The results show a 7 dBm reduction in the peak power level with a frequency deviation of 10%, demonstrating that the dominate harmonic is spread and distributed to adjacent frequencies, and the magnitude of harmonics is significantly reduced. The results demonstrate that the driver with a spread spectrum clock generator would help to reduce interference in sensitive electronic components and be suitable for portable consumer electronics applications.

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