Power Factor Correction in Switch Mode Power Supplies

1
Power Factor Correction in Switch Mode Power
Supplies

• Using the SiC Schottky Diode

2
Team

• Team Leader
• Robin Kelley
• Team Members
• Travis Brignac
• Clinton Livingston
• Advisor
• Dr. Mazzola

3
Abstract

• Design a switch mode power supply with a new
  power factor correction circuit, which implements
  the SiC Schottky diode.
• Application of SMPS as an electronic ballast
• Issue Application Note detailing use of the SiC
  Schottky diode in power factor correction

4
Comparison Si pn vs. SiC Schottky

• Reverse biased pn junction diode does not turn
  off fast enough during switching
• This is due to the removal of excess carries from
  the depletion region
• Causes reverse recovery transient
• SiC Schottky diodes do not need to remove excess
  carries from the depletion region
• Eliminates reverse recovery transient.
• Allows for higher operating frequencies

5
System / Hardware
120V AC
6
EMI Filter / AC Rectifier
7
Waveforms
8
Power Factor Correction
9
DC-AC Inverter
10
Inverter Simulation Results
11
Prototype Results
Lamp Voltage f200kHz
Resistive Load f100kHz
12
Constraints vs Results
13
Current / Future Work

• Debugging Stage of PFC
• Second Design Phase of Inverter Circuit
• Integrate major circuits
• Final Testing

14
Questions?
15
References

• 1 H. Kapels, I. Zverev, R. Rupp, and L. Lorenz,
  SiC Schottky diodes A Milestone in hard
  switching applications, Application Note,
  Infineon Technologies, 2001.
•  
• 2 Marco Scherf and Ilia Zverev, 200W SMPS
  Demonstration Board, Application Note, Infineon
  Technology, v1.2, November 2001.
•  
• 3 M. Bairanzade, Electronic Lamp Ballast
  Design, Application Note, Motorola, 1995.
•  
• 4 SWITCHMODE Power Supplies Reference Manual
  and Design Guide, Manual, ON Semiconductor,
  Rev.3, July 2002.
•  
• 5 Infineon Technologies Produces Worlds first
  Power Semiconductors in Silicon Carbide,
  http//www.infineon.com/news/press/102-019e.htm,
  Infineon Technologies AG, Muenchen,Germany,
  February 5, 2001
•  
• 6 C. Miesner, R. Rupp, H. Kapels, M. Krach, and
  I. Zverev, thinQ! Silicon Carbide Schottky
  Diodes An SMPS Circuit Designers Dream Comes
  True!, Technical White Paper, Infineon
  Technology, Infineon Technologies AG, September,
  2001.
•  
• 7 Ming Hian Chew, Design of Power Factor
  Correction Circuit Using GreenlineE Compact Power
  Factor Controller MC33260, Application Note for
  AND8016/D, ON Semiconductor, June 2002.
•  
• 8 Product Information E2/32IS-120 Two Lamp
  Operation, 120V, Howard Industries, Inc.,
  February 2001.
•