LI Chen
- Courses2
- Reviews9
- School: University of Saskatchewan
- Campus:
- Department: Electrical Engineering
- Email address: Join to see
- Phone: Join to see
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Location:
Saskatoon, SK - Dates at University of Saskatchewan: April 2011 - September 2018
- Office Hours: Join to see
Biography
University of Saskatchewan - Electrical Engineering
Resume
2000
PhD
Electrical and Computer Engineering
University of Alberta
1998
Master of Science (M.Sc.)
Electrical and Computer Engineering
University of Alberta
C
C++
Matlab
Signal Processing
Simulations
Verilog
LaTeX
Single-Event Effects Analysis of a Pulse Width Modulator IC in a DC/DC Converter
Nick van Vonno
Alpha particles
neutrons and laser-beam test results on an integrated pulse width modulation (PWM) controller operating in a DC/DC converter are presented in this paper. The PWM is fabricated on a 600-nm Bi-CMOS technology. Single-Event Transient (SET) derived from a bandgap circuit was amplified by a filter capacitor in the propagation path. Finally
a constant 6-μs SET pulse was observed on PGOOD pin which is a supervisory signal. This glitch caused system resets. Pulsed laser technology was adopted to locate the origin of the SET. 3D TCAD and circuit simulation tools were used to analyze the root cause. System and circuit level hardening approaches to mitigate the SET are also presented.
Single-Event Effects Analysis of a Pulse Width Modulator IC in a DC/DC Converter
Nick van Vonno
Pulsed laser and heavy-ion experiments were carried out on a commercial-off-the-shelf DC/DC pulse width modulation controller to study the equivalent laser Linear Energy Transfer (LET) at wavelengths of 750 nm
800 nm
850 nm and 920 nm. The laser experiments showed that the shorter wavelength laser has smaller threshold energy to generate single-event transient pulses. The cross-sections versus heavy-ion LET and laser energy per pulse were obtained and correlated. The heavy-ion and laser cross-sections fit well considering the effects of metal layers on the chip. The results of this research facilitate the future pulsed laser testing by providing explicit coefficients to evaluate the equivalent laser LET
which can be used to replace costly heavy-ion testing.
Correlation of Heavy-Ion and Laser Testing on a DC/DC PWM Controller
Chen
Unviersity of Saskatchewan
University of Saskatchewan
Saskatchewan
Canada
Associate Professor
University of Saskatchewan
Saskatoon
Professor
Unviersity of Saskatchewan
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Adjunct Lecturer
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Assistant Professor
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Teaching Assistant
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Senior Research Scientist
University of Texas at Austin - University Of Texas At Austin - Jianli Chen (90% Match)
Senior Research Scientist
University of Texas at Austin - University Of Texas At Austin - Jianli Chen (90% Match)
Senior Research Scientist
University of Texas at Austin - University Of Texas At Austin - Li Chen (100% Match)
Research Associate 2
University Of Texas Medical Branch - Galveston - University Of Texas Medical Branch - Galveston - Su-Li Cheng (100% Match)
Assistant Professor
University Of Texas Southwestern Medical Center - University Of Texas Southwestern Medical Center - Li Chen (90% Match)
Assistant Professor
West Texas A&M University - West Texas A&m University
