Title :
Design of pulse width modulation based smart switch controller for automotive applications
Author :
Athalye, Geeta ; Keyhani, Ali ; Christen, James ; Proca, Amuliu B.
Author_Institution :
Ohio State Univ., Columbus, OH, USA
Abstract :
This paper presents an improved design of a Pulse Width Modulation (PWM) controller for controlling the blower motor in the Heat Ventilation and Air Conditioning (HVAC) applications of an automobile. The design employs a smart switch instead of the conventional power MOSFET. This smart switch is a monolithic device with built-in protection features such as thermal shutdown, linear current limitation, short circuit protection and over-voltage clamp. This switch thus eliminates the protection circuitry required around the power MOSFET. The computer models generated for both the design methodologies (with power MOSFET and with smart switch) in SABER simulation package are presented. These models have been validated against experimental data. The paper contains a comparison of the two design schemes in terms of the size and number of components required
Keywords :
DC motor protection; DC-DC power convertors; HVAC; PWM power convertors; angular velocity control; automotive electronics; machine control; overvoltage protection; power field effect transistors; power integrated circuits; power semiconductor switches; ASIC; DC motor speed control; HVAC application; OMNIFET; PWM based smart switch controller; SABER simulation package; automotive applications; blower motor control; built-in protection features; computer models; improved design; linear current limitation; number of components; overvoltage clamp; short circuit protection; size of components; thermal shutdown; Air conditioning; MOSFET circuits; Power MOSFET; Protection; Pulse width modulation; Space vector pulse width modulation; Switches; Switching circuits; Temperature control; Ventilation;
Conference_Titel :
Digital Avionics Systems Conference, 1999. Proceedings. 18th
Conference_Location :
St Louis, MO
Print_ISBN :
0-7803-5749-3
DOI :
10.1109/DASC.1999.863656