scholarly journals EMI Reduction in Low Input Ripple DC-DC Converter using Chaos PWM technique

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Antonella Ragusa ◽  
Giuseppe Marsala
Keyword(s):  
Energy Spectrum ◽  
Output Voltage ◽  
Power Converters ◽  
Input Current ◽  
Pwm Control ◽  
Low Input ◽  
Chua Oscillator ◽  
Chaotic Carrier ◽  
Emi Reduction

This paper presents a chaotic PWM switching technique for a high boost DC-DC converter with a very low ripple at the input current. The use of a choatic PWM allows a reduction of Electromagnetic In (EMI) at the output of power converters by spreading the energy spectrum of the output voltage. In this paper a chaotic PWM, using the Chua oscillator, has been implemented in Matlab for the converter under study and a comparison with a traditional PWM control has been done. A detailed description of the generation of the chaotic carrier is presented and the effect on the output EMI mitigation has been shown.

A 50 mV Fully-Integrated Self-Startup Circuit for Thermal Energy Harvesting

2017 ◽  
Vol 26 (12) ◽  
pp. 1750196 ◽  
Author(s):  
Yanzhao Ma ◽  
Yinghui Zou ◽  
Shengbing Zhang ◽  
Xiaoya Fan
Keyword(s):  
Energy Harvesting ◽  
Thermal Energy ◽  
Output Voltage ◽  
Charge Pump ◽  
Input Voltage ◽  
Fully Integrated ◽  
Input Capacitance ◽  
Low Input ◽  
Lc Oscillator ◽  
Thermal Energy Harvesting

A fully-integrated self-startup circuit with ultra-low voltage for thermal energy harvesting is presented in this paper. The converter is composed of an enhanced swing LC oscillator and a charge pump with decreased equivalent input capacitance. The LC oscillator has ultra-low input voltage and high output voltage swing, and the charge pump has a fast charging speed and small equivalent input capacitance. This circuit is designed with 0.18[Formula: see text][Formula: see text]m standard CMOS process. The simulation results show that the output voltage is in the range of 0.14[Formula: see text]V and 2.97[Formula: see text]V when the input voltage is changed from 50[Formula: see text]mV to 150[Formula: see text]mV. The output voltage could reach 2.87[Formula: see text]V at the input voltage of 150[Formula: see text]mV and the load of 1[Formula: see text]M[Formula: see text]. The maximum efficiency is in the range of 10.0% and 14.8% when the input voltage is changed from 0.2[Formula: see text]V to 0.4[Formula: see text]V. The circuit is suitable for thermoelectric energy harvesting to start with ultra-low input voltage.

High Step-up DC/DC Converter with Low Input Current Ripple and Low Voltage Stress on Semiconductors

2021 ◽  
Author(s):  
Saed Mahmoud Alilou ◽  
Mohammad Maalandish ◽  
Soheil Nouri ◽  
Seyed Hossein Hosseini
Keyword(s):  
Low Voltage ◽  
Input Current ◽  
Low Input ◽  
Voltage Stress ◽  
Current Ripple

1 kW, 9 kV DC-DC converter module with time-sharing control of output voltage and input current

1993 ◽  
Vol 8 (4) ◽  
pp. 606-614 ◽  
Author(s):  
R. Borgatti ◽  
R. Stefani ◽  
O. Bressan ◽  
F. Bicciato ◽  
P. Tenti ◽  
...  
Keyword(s):  
Output Voltage ◽  
Input Current ◽  
Time Sharing
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