TY - JOUR
T1 - Temperature Rise Effects on Dynamic Resistances for Laser Diodes with a Wavelength of 450 nm for Vehicle Headlight Applications
AU - Pai, Kai Jun
N1 - Funding Information:
Manuscript received February 8, 2019; revised May 18, 2019; accepted June 16, 2019. Date of publication July 17, 2019; date of current version October 18, 2019. This work was supported by the Ministry of Science and Technology (MOST) of Taiwan, R.O.C., under Grant MOST 107–2221–E–131–008 and Grant MOST 108–2221–E–131–010–MY2. The review of this paper was coordinated by Dr. B. Akin.
Funding Information:
The author would like to acknowledge the financial support of Ministry of Science and Technology, Taiwan, R.O.C.
Publisher Copyright:
© 1967-2012 IEEE.
PY - 2019/10
Y1 - 2019/10
N2 - In this paper, a laser headlight power converter (LHPC) was developed to drive the InGaN-based blue beam laser diode (BBLD). The LHPC was composed of the four-switch step-up step-down converter (FSSUSDC), the FSSUSDC controller, and the current error compensator (CEC). When the BBLD dynamic resistance was increased under the high ambient air temperature, the FSSUSDC operated in the step-down mode, and the CEC employed the proportional-integral control, the BBLD driving current exhibited an ignition current spike, which could destroy the semiconductor material of the BBLD, resulting in optical output power decay. Therefore, a new four-gradation gain (FGG) control method was proposed to mitigate the ignition current spike of the BBLD. This paper presented the BBLD temperature characteristic, an analysis of the LHPC ignition current, a CEC compensation design, and an analysis and design of the FGG control.
AB - In this paper, a laser headlight power converter (LHPC) was developed to drive the InGaN-based blue beam laser diode (BBLD). The LHPC was composed of the four-switch step-up step-down converter (FSSUSDC), the FSSUSDC controller, and the current error compensator (CEC). When the BBLD dynamic resistance was increased under the high ambient air temperature, the FSSUSDC operated in the step-down mode, and the CEC employed the proportional-integral control, the BBLD driving current exhibited an ignition current spike, which could destroy the semiconductor material of the BBLD, resulting in optical output power decay. Therefore, a new four-gradation gain (FGG) control method was proposed to mitigate the ignition current spike of the BBLD. This paper presented the BBLD temperature characteristic, an analysis of the LHPC ignition current, a CEC compensation design, and an analysis and design of the FGG control.
KW - InGaN
KW - Laser headlight
KW - dynamic resistance
KW - laser diode
KW - optical output power
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U2 - 10.1109/TVT.2019.2929225
DO - 10.1109/TVT.2019.2929225
M3 - Article
AN - SCOPUS:85073876468
SN - 0018-9545
VL - 68
SP - 9529
EP - 9542
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 10
M1 - 8765244
ER -