Title :
Incandescent lamp CMOS driver with output power control
Author :
Abramo, Paolo D. ; Roncella, Roberto ; Saletti, Roberto
Author_Institution :
Dipt. di Ingegneria dell´´Informazione, Pisa Univ., Italy
Abstract :
An integrated protection circuit to be used as a part of an intelligent power switch is presented in this paper. The circuit is mainly designed to address the overcurrent solicitation due to incandescent lamp loads, typical in industrial and automotive environment. The circuit realizes, with a nonlinear feedback loop, an on-off switching of the load voltage as a function of the value of the load current, with the aim of keeping its mean value constant. This mechanism allows an efficient power transfer to the load, by minimizing the power dissipated on the MOS switch. Simulations and the first experimental measurements carried out on a chip fabricated with a 2 μm CMOS high voltage process are also shown
Keywords :
CMOS integrated circuits; driver circuits; feedback; filament lamps; lamp accessories; lighting control; load (electric); nonlinear control systems; overcurrent protection; power control; switching circuits; 2 micron; CMOS high voltage process; MOS switch power dissipation minimisation; incandescent lamp CMOS driver; integrated protection circuit; intelligent power switch; lamp loads; nonlinear feedback loop; on-off load voltage switching; output power control; overcurrent solicitation; power transfer; Automotive engineering; Driver circuits; Feedback circuits; Feedback loop; Lamps; Power generation; Protection; Switches; Switching circuits; Voltage;
Conference_Titel :
Industrial Electronics Society, 2000. IECON 2000. 26th Annual Confjerence of the IEEE
Conference_Location :
Nagoya
Print_ISBN :
0-7803-6456-2
DOI :
10.1109/IECON.2000.972350
