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Dual modulation technique for high efficiency in high switching buck converters over a wide load range

Jen-Chieh Tsai, Tsung-Ying Huang, Wang-Wei Lai, Ke-Horng Chen
2010 Proceedings of 2010 IEEE International Symposium on Circuits and Systems  
A dual modulation technique to improve power conversion efficiency with minimal increase in output voltage ripple is presented.  ...  Index Terms-DC-DC buck converter, dual modulation technique, hopping frequency modulator (HFM), loading potential detector (LPD) .  ...  Fig. 16 . 16 (a) Efficiency comparison between the original PWM operation and the proposed dual modulation technique. (b) Efficiency of the proposed converter over a wide range of load current.  ... 
doi:10.1109/iscas.2010.5537750 dblp:conf/iscas/TsaiHLC10 fatcat:tynkn3qtkjgybaclcxx63dpbym

Dual Modulation Technique for High Efficiency in High-Switching Buck Converters Over a Wide Load Range

Jen-Chieh Tsai, Tsung-Ying Huang, Wang-Wei Lai, Ke-Horng Chen
2011 IEEE Transactions on Circuits and Systems Part 1: Regular Papers  
A dual modulation technique to improve power conversion efficiency with minimal increase in output voltage ripple is presented.  ...  Index Terms-DC-DC buck converter, dual modulation technique, hopping frequency modulator (HFM), loading potential detector (LPD) .  ...  Fig. 16 . 16 (a) Efficiency comparison between the original PWM operation and the proposed dual modulation technique. (b) Efficiency of the proposed converter over a wide range of load current.  ... 
doi:10.1109/tcsi.2011.2142970 fatcat:an62jiwci5gdzarcvyfamrqncu

Guest Editorial: Special Issue on Power Converters and Control Techniques for Very Fast Response Applications

Diego G. Lamar, Miguel Rodriguez
2021 IEEE Journal of Emerging and Selected Topics in Power Electronics  
VFR converters likewise become necessary for applications in which the efficient generation of highfrequency waveforms is mandatory: envelope amplifiers (EAs) for envelope tracking (ET) techniques, visible  ...  On the one hand, operation at high switching frequency, within the MHz range, is the basic approach used to increase the bandwidth of VFR converters.  ...  In this paper, a VLC-LED modulator with a dual control loop is tested over a wide range of LED current supplied by several commercial ac-dc LED drivers and a large variety of series and parallel LED configurations  ... 
doi:10.1109/jestpe.2020.3044160 fatcat:uueh3nsejzhw7cvwdrzcggtrsu

A Comprehensive Review of DC–DC Converter Topologies and Modulation Strategies with Recent Advances in Solar Photovoltaic Systems

Kummara Venkat Guru Raghavendra, Kamran Zeb, Anand Muthusamy, T. N. V. Krishna, S. V. S. V Prabhudeva Kumar, Do-Hyun Kim, Min-Soo Kim, Hwan-Gyu Cho, Hee-Je Kim
2019 Electronics  
This review work will provide a useful structure and reference point on the DC/DC converters for researchers and designers working in the field of solar PV applications.  ...  In this paper, the most important features of the DC/DC converters along with the MPPT techniques are reviewed and analyzed.  ...  Forward flyback Yu et al. [258] Dual constant on-time modulation This modulation technique is used in order to obtain high efficiency across the wide load and the input range.  ... 
doi:10.3390/electronics9010031 fatcat:cszzxq45lret5nojncfq27qfta

Dual Bias Modulator for Envelope Tracking and Average Power Tracking Modes for CMOS Power Amplifier

Junghyun Ham, Haeryun Jung, Jongsuk Bae, Wonseob Lim, Keum Cheol Hwang, Kang-Yoon Lee, Cheon-Seok Park, Youngoo Yang
2014 JSTS Journal of Semiconductor Technology and Science  
The BM includes a hybrid buck converter and a normal buck converter for an envelope tracking (ET) mode for high output power and for an average power tracking (APT) mode for low output power, respectively  ...  This paper presents a dual-mode bias modulator (BM) for complementary metal oxide semiconductor (CMOS) power amplifiers (PAs).  ...  In this paper, we propose a dual-mode BM that has a hybrid buck converter and a normal buck converter for CMOS PAs. For a high power region, the ET mode with a hybrid buck converter is used.  ... 
doi:10.5573/jsts.2014.14.6.802 fatcat:lmmufixkefbsros2bpn3tarv5e

An improved closed loop hybrid phase shift controller for dual active bridge converter

S. Narasimha, Surender Reddy Salkuti
2020 International Journal of Electrical and Computer Engineering (IJECE)  
In this paper, a new closed loop hybrid phase shift control is proposed for dual active bridge (DAB) converter with variable input voltage.  ...  The hybrid phase shift control (HPS) scheme is a combination of EPS and TPS modulations, and it provides a very simple closed form implementation for the primary and secondary side phase shift angles.  ...  Analysis of reactive power loss and high efficiency of novel optimization method and modulation solution for IBDC DAB proposed in [10] , operates over a wide input range, and the switching losses are  ... 
doi:10.11591/ijece.v10i2.pp1169-1178 fatcat:azgiswyctzfvdcpf2joa5r2ura

A digitally controlled DC/DC converter for an RF power amplifier

V. Yousefzadeh, Narisi Wang, Z. Popovic, D. Maksimovic
2006 IEEE transactions on power electronics  
efficiency over a wide range of output power levels.  ...  improved over a wide range of RFPA output power levels.  ...  CONVERTER OPERATING MODES FOR HIGH EFFICIENCY OVER A WIDE RANGE OF OUTPUT POWER The drain supply voltage of the RFPA is provided by a synchronous dc/dc buck converter.  ... 
doi:10.1109/tpel.2005.861156 fatcat:r25zcoif3vgtvaiduq2ei7xqay

Operation of Current-fed Dual Active Bridge DC-DC Converters for Microgrid

2019 International journal of recent technology and engineering  
Dual Active Bridge (DAB) is an isolated bidirectional DC-DC converter, which comprises two full bridge converterslinked through a high frequency transformer.  ...  The application of current-fed DAB converters is to reduce the losses at the time of switching under light load conditions and improves the efficiency.  ...  But for a wide range of source voltage and load power, phase-shift modulation has Fig. 4 Basic Waveforms of CVFDAB Converter difficult to operate [41] , [42] .  ... 
doi:10.35940/ijrte.b2912.078219 fatcat:ylx7olwjpba3rikyb5tlyykqsm

Overview and Comparative Assessment of Single-Phase Power Converter Topologies of Inductive Wireless Charging Systems

Phuoc Sang Huynh, Deepak Ronanki, Deepa Vincent, Sheldon S. Williamson
2020 Energies  
In EV wireless charging systems using IPT, power electronic converters play a vital role to reduce the size and cost, as well as to maximize the efficiency of the overall system.  ...  The acquisition of inductive power transfer (IPT) technology in commercial electric vehicles (EVs) alleviates the inherent burdens of high cost, limited driving range, and long charging time.  ...  The conventional dual-stage topology has the lowest stress on switching devices, and its efficiency maintains a comparable high level over wide load range.  ... 
doi:10.3390/en13092150 fatcat:xhq2uvy5abhdncvihmmvechata

A tri-mode high light-load efficiency BUCK converter for mobile phone application

Cui Qing, Lin Fujiang
2016 IEICE Electronics Express  
This paper proposes a wide output range and tri-mode BUCK circuit which utilizes PWM mode, PFM mode and PSM mode at heavy, light and very light loads respectively.  ...  The work, therefore, could increase efficiency at very light load. The proposed BUCK is fabricated using SMIC 0.18 µm process.  ...  Dual Modulation Technique for High Efficiency in High-Switching Buck Converters Over a Wide Load Range," IEEE Trans.  ... 
doi:10.1587/elex.13.20160360 fatcat:kg26ea42i5erdkssgn47b5fy7u

Review of multiport isolated bidirectional converter interfacing renewable and energy storage system

Arulmozhi Subramanian, Santha KR
2020 International Journal of Power Electronics and Drive Systems  
A summary of converter topologies is provided comparing power rating, device count, soft switching resonant elements and efficiency which gives an idea for selection of suitable topology for the desired  ...  The key contributions on soft switching for reducing switching losses and improving overall converter efficiency with help of resonant elements are discussed.  ...  A wide range of ZVS for switches of primary side converter and ZCS for switches of secondary side converter is achieved with the help of LLC resonant tank.  ... 
doi:10.11591/ijpeds.v11.i1.pp466-467 fatcat:hcc7ctejobdkjptbfoj5x2whze

A High-Efficiency Linear RF Power Amplifier With a Power-Tracking Dynamically Adaptive Buck-Boost Supply

B. Sahu, G.A. Rincon-Mora
2004 IEEE transactions on microwave theory and techniques  
The tradeoffs involved in designing switching converters with wide bandwidth (BW) and high efficiency over wide loading conditions are considered.  ...  In this paper, the applicability of dynamic-converter-supplied RF PAs' efficiency-enhancement schemes is compared and evaluated for code-division multiple-access (CDMA) applications.  ...  By using a buck-boost converter with high efficiency over a wide loading range, the system efficiency can be further improved.  ... 
doi:10.1109/tmtt.2003.821256 fatcat:fce654zgzfakpo3tvnn4nhybnm

High efficiency, high density, PolyPhase converters for high current applications [chapter]

Wei Chen
2011 Analog Circuit Design  
APPENDIX A DERIVATION OF OUTPUT RIPPLE CURRENT IN A 2-PHASE CIRCUIT During the interval from DT to T as shown in Figure 1 , the high side switch in module 1 is off and the high side switch of module  ...  During the interval [from DT, T] when the high side switch in module 1 is off and the high side switch of module 2 is on, the inductor current in module 1 decreases and the inductor current in module 2  ... 
doi:10.1016/b978-0-12-385185-7.00014-7 fatcat:saaugnftnbbavnucyxdh2bkqx4

Evolution of Single Phase Photovoltaic Inverters

Ramaprasad Panda, Ashok Kumar Tripathy
2012 International Journal of Power System Operation and Energy Management  
This brief review focuses on inverter technologies for connecting photovoltaic (PV) modules to a single-phase grid.  ...  they utilizes a transformer (either line or high frequency) or not; and 4) the type of grid-connected power stage.  ...  The dclink voltage of inverters for DG systems may vary over a wide range.  ... 
doi:10.47893/ijpsoem.2012.1041 fatcat:beatosth4rbc7kaopsaujnbdp4

Switching Loss Calculation (SLC) and Positive/Negative Slope Compensation Dynamic Droop Scaling (PNC-DDS) Technique for High-Efficiency Multiple-Input–Single-Output (MISO) Systems

Tin-Jong Tai, Ke-Horng Chen
2009 IEEE transactions on power electronics  
In other words, DDS with power management can achieve low drop output voltage and high efficiency over a wide load range.  ...  Actually, the design of the switching loss calculation circuit in a dynamic droop system (DDS) can decide the optimum driving solution according to the loading condition, i.e., more than one input source  ...  ACKNOWLEDGMENT The authors wish to thank RichTek Technology Corporation and Chunghwa Picture Tubes Ltd. for their help.  ... 
doi:10.1109/tpel.2009.2016099 fatcat:awu3kw4cgbd6xfdpce4ydkrt64
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