Mitigation of ignition current spike causing from forward bias drift for laser diode driver

Kai Jun Pai*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Using a DC-DC converter, a safety standard circuit, and a feedback controller, a laser diode driver was developed and implemented in this study. For both step-up and step-down operating modes, a two-switch two-diode buck-boost converter was employed as the power stage of the laser control driver. On account of the operating ambient temperature can cause forward bias drift on the laser diode; hence, a laser control driver with the feedback controller can ballast the driving current of the laser diode, and further to deal with forward bias drift for the laser diode. During the start-up phase and under a high OAT, a current spike occurs when the DC-DC converter operation changes to the constant-current output mode. To solve the current spike problem, a proportional shifting proportional-integral control method was employed to apply in the current-feedback controller, achieving mitigation of ignition current spike.

Original languageEnglish
Title of host publication2019 IEEE Milan PowerTech, PowerTech 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538647226
Publication statusPublished - 2019 Jun
Externally publishedYes
Event2019 IEEE Milan PowerTech, PowerTech 2019 - Milan, Italy
Duration: 2019 Jun 232019 Jun 27

Publication series

Name2019 IEEE Milan PowerTech, PowerTech 2019


Conference2019 IEEE Milan PowerTech, PowerTech 2019


  • Constant-current
  • Laser
  • Proportional
  • Proportional-integral control

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Safety, Risk, Reliability and Quality


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