An LED driver with thermal control function

Author

Zhenxu Zha ; Hei Wong ; Yan Han

Author_Institution

Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China

fYear

2014

fDate

28-31 Oct. 2014

Firstpage

1

Lastpage

3

Abstract

This paper presents a light-emitting diode (LED) driver for general lighting applications. In addition to providing a high stable current source for the LED biasing, the new circuit provides an energy-efficient way for light intensity control using a pulse width modulation (PWM)-based dimming circuit. Moreover, we introduce a feedback thermal control circuit to ensure the LED being operated at a temperature lower than 60 °C so as to minimize the light intensity degradation and to prolong the lifetime of the LED lamps.

Keywords

LED lamps; driver circuits; lighting control; temperature control; LED driver; LED lamps; PWM-based dimming circuit; feedback thermal control circuit; general lighting applications; light intensity control; light intensity degradation; light-emitting diode driver; pulse width modulation; thermal control function; IEEE Lasers and Electro-Optics Society; Pulse width modulation; Regulators; LED driver; PWM; constant current driving; dimmable; thermal control;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4799-3296-2

Type

conf

DOI

10.1109/ICSICT.2014.7021587

Filename

7021587