A Method to Improve Switching Power Supply Efficiency at Light Load with DSP Control

Chuan Gao; Guang Lei Jin; Ri Chen Jiang; Mu Rong Li; Masashi Ochiai; Shinji Aso; Yasunori Kobori; Haruo Kobayashi

doi:10.4028/www.scientific.net/KEM.698.133

Paper Titles

Bias and 1/f Noise Degradation Modeling of 90 nm n-Channel MOSFETs Induced by Hot Carrier Stress
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A High Precision IGBT Macro-Model for Switching Simulations
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Redundant SAR ADC Algorithm Based on Fibonacci Sequence
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A Residue Number System Based Time-to-Digital Converter Architecture and its FPGA Implementation
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A Method to Improve Switching Power Supply Efficiency at Light Load with DSP Control
p.133

Triple-Band CMOS Low Noise Amplifier Design Utilizing Transformer Couplings
p.142

Three-Dimensional Simulation of Proposed Ring-Confined-Chalcogenide Phase-Change Memory for Reducing Reset Operation Current
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Real-Time Measurement of Ion Energies for Heavy Ions
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Evaluation of Radio-Photoluminescence Spectra of Copper-Doped Phosphate Glass Dosimeter Irradiated with Ionized Particles
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 698A Method to Improve Switching Power Supply...

A Method to Improve Switching Power Supply Efficiency at Light Load with DSP Control

Abstract:

This paper discusses a digital control method for efficiency improvement of switching power circuit at light load by using C2000 Series DSP (Texas Instruments Inc.). In this work, we alter the module in DSP to adjust the link voltage between a bridgeless PFC AC/DC converter and a phase shift full bridge DC/DC converter, as well as to control the PWM frequency of power circuit in order to improve the power efficiency in a suitable way. Our experiments result show that the efficiency of the power circuit at half or light load improves by adjusting the link voltage and/or PWM frequency

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Periodical:

Key Engineering Materials (Volume 698)

Pages:

133-141

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.698.133

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Online since:

July 2016

Authors:

Chuan Gao, Guang Lei Jin, Ri Chen Jiang*, Mu Rong Li, Masashi Ochiai, Shinji Aso, Yasunori Kobori, Haruo Kobayashi

Keywords:

C2000, Digital Control, DSP, Efficiency Improvement, Light Load, Power Supply Circuit

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References

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