DocumentCode :
2718756
Title :
A novel 12 kW switch mode power supply
Author :
Inniss, Brian ; Carli, Giampaolo
Author_Institution :
Northern Telecom, Lachine, Que., Canada
fYear :
1990
fDate :
22-25 Oct. 1990
Firstpage :
88
Lastpage :
96
Abstract :
A new 200 A switch mode power supply (SMPS) for telecommunications applications was developed. The authors detail the most significant electrical characteristics of the SMPS. The power transfer mechanism is based on a full bridge PWM configuration. The basic switching device chosen was the power MOSFET. This semiconductor is packaged by various companies in isolated modules containing four parallel dies. The unit uses two of these modules in parallel as one switch so that a total of eight modules are utilized. FETS were chosen over other devices because of their low drive requirements, speed, and their sharing characteristics when operating in parallel. The stray capacitances associated with high power switching devices, in conjunction with the use of saturable beads, provide for some desirable inherent snubbing effect. A description is given of power transformer design, power factor correction, and of some precautions in designing for optimally low EMI emission and the highest lightning surge protection.<>
Keywords :
switched mode power supplies; telecommunication services; telecommunication systems; 12 kW; 200 A; drive requirements; electrical characteristics; full bridge PWM configuration; power MOSFET; power factor correction; power transfer mechanism; power transformer design; saturable beads; sharing characteristics; snubbing effect; stray capacitances; switch mode power supply; Bridges; Electric variables; MOSFET circuits; Power MOSFET; Power semiconductor switches; Power supplies; Pulse width modulation; Semiconductor device packaging; Switched-mode power supply; Telecommunication switching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Telecommunications Energy Conference, 1990. INTELEC '90., 12th International
Conference_Location :
Orlando, FL, USA
Type :
conf
DOI :
10.1109/INTLEC.1990.171230
Filename :
171230
Link To Document :
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