EPE Association: EPE 2020 - DS1c-1: High Frequency Power Converters-1

EPE 2020 - DS1c-1: High Frequency Power Converters-1
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 02: Power Converter Topologies and Design > EPE 2020 - DS1c-1: High Frequency Power Converters-1

   [return to parent folder]

   A 3A Low Voltage Laser Diode Driver IC in a CMOS technology for an iToF-based 3D image sensor
By Romain DAVID [View]
[Download]

Abstract: This paper presents a Laser Diode Driver (LDD) intended for a 3D image sensor used in mobile phones and based on the indirect Time-of-Flight (iToF) measurement. The work is focused on the study and design of the Integrated Circuit (IC) considering constraints related to mobile applications (low input voltage range, strong integration). The architecture relies on a classical driving topology where a buck- boost DC/DC converter is employed for controlling the current through the laser diode with a high power efficiency while a switching element is connected in series with the diode for generating laser pulses. The novelty here concerns the feasibility of integrating the whole solution (except laser diode and off-chip passive components) on a single chip. A LDD prototype has been implemented in a 130nm CMOS technology from STMicroelectronics. It is able to provide current pulses up to 3A with a 2.5ns pulse width at a maximum 200MHz Pulse Repetition Frequency (PRF) for a 3.6V supply voltage. Under theses conditions, the prototype delivers an average output electrical power of 4.5W to the laser diode with an electrical efficiency of 63\%.

   Energy management in a Multi-source System using isolated DC-DC resonant converters
By MOUNCIF ARAZI [View]
[Download]

Abstract: This paper presents an energy management strategy for a multi-source system composed of a fuel cell (FC) as the primary source and supercapacitors (SC) as secondary source. Isolated LLC resonant converter is used to connect the fuel cell to the DC-link, while the supercapacitors are connected through a bidirectional resonant converter. The resonant operation ensures high efficiency and high power density by means of soft switching and high frequency operation. The aim of this paper is the control of the DC-DC resonant converters to share the requested power between the SC and FC according to their dynamic response. So, the Fuel cell supplies the nominal power, while the supercapacitors ensure the mitigation of the fluctuations from the load power. The performances of the proposed topology are evaluated through some simulations.

   Novel Soft-Switching Interleaved Boost Converters for Renewable Energy Conversion Systems
By VEERA VENKATA SUBRAH BHAJANA [View]
[Download]

Abstract: This paper proposes new soft-switching interleaved boost converters (SSIBC) for photovoltaic powergeneration systems. The SSIBCs presented comprises with additional dual and single auxiliary cells.The main active switches of these converters are able to provide zero voltage switching (ZVS) andzero current switching (ZCS) operation by means of dual auxiliary and single auxiliary cells,respectively. The proposed converters are capable to reduce turn on and turn off switching powerlosses with their soft-switching operation and consequently, they mitigate the overall efficiency. Inaddition, the auxiliary switches also achieve soft-turn on and turn off operation, during the total softswitching region of main switches. The detailed principle of operation and simulation evaluationspresented in this paper validate the effectiveness and soft-switching ability of the proposed interleavedboost converters.

   Resonant DC/DC converter with class __2 inverter and class DE rectifier based on GaN HEMT
By Junping HE [View]
[Download]

Abstract: A resonant DC/DC converter with Class F2 inverter and Class DE rectifier based on GaN HEMT is designed and validated. A PCB plane transformer is designed to realize the isolation of the primary side and the secondary side of the converter. The output voltage is regulated by hysteresis ON/OFF control. The operation principle and design procedure are introduced in detail.

   SISO Control Strategy of Resonant Dual Active Bridge with a Tuned CLC Network
By Meiqi WANG [View]
[Download]

Abstract: This paper proposed a linear state-space model for a resonant dual active bridge with a tuned capacitor-inductor-capacitor network which is applied to an energy storage system. The proposed model is used for predicting the behavior of the proposed system and estimated the state variables under large signal variation. Using the proposed model, a decoupled control strategy was designed which realizes the high frequency link currents control and also improves the efficiency of the converter. By applying the steady-state relationship between state variables and the system inputs, the controller was simplified to a single proportional integral (PI) controller instead of from three PI controllers, which was implemented on a low cost digital signal processor and verified experimentally.

EPE 2020 - DS1c-1: High Frequency Power Converters-1
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 02: Power Converter Topologies and Design > EPE 2020 - DS1c-1: High Frequency Power Converters-1
	[return to parent folder]

	A 3A Low Voltage Laser Diode Driver IC in a CMOS technology for an iToF-based 3D image sensor By Romain DAVID	[View] [Download]
Abstract: This paper presents a Laser Diode Driver (LDD) intended for a 3D image sensor used in mobile phones and based on the indirect Time-of-Flight (iToF) measurement. The work is focused on the study and design of the Integrated Circuit (IC) considering constraints related to mobile applications (low input voltage range, strong integration). The architecture relies on a classical driving topology where a buck- boost DC/DC converter is employed for controlling the current through the laser diode with a high power efficiency while a switching element is connected in series with the diode for generating laser pulses. The novelty here concerns the feasibility of integrating the whole solution (except laser diode and off-chip passive components) on a single chip. A LDD prototype has been implemented in a 130nm CMOS technology from STMicroelectronics. It is able to provide current pulses up to 3A with a 2.5ns pulse width at a maximum 200MHz Pulse Repetition Frequency (PRF) for a 3.6V supply voltage. Under theses conditions, the prototype delivers an average output electrical power of 4.5W to the laser diode with an electrical efficiency of 63\%.

	Energy management in a Multi-source System using isolated DC-DC resonant converters By MOUNCIF ARAZI	[View] [Download]
Abstract: This paper presents an energy management strategy for a multi-source system composed of a fuel cell (FC) as the primary source and supercapacitors (SC) as secondary source. Isolated LLC resonant converter is used to connect the fuel cell to the DC-link, while the supercapacitors are connected through a bidirectional resonant converter. The resonant operation ensures high efficiency and high power density by means of soft switching and high frequency operation. The aim of this paper is the control of the DC-DC resonant converters to share the requested power between the SC and FC according to their dynamic response. So, the Fuel cell supplies the nominal power, while the supercapacitors ensure the mitigation of the fluctuations from the load power. The performances of the proposed topology are evaluated through some simulations.

	Novel Soft-Switching Interleaved Boost Converters for Renewable Energy Conversion Systems By VEERA VENKATA SUBRAH BHAJANA	[View] [Download]
Abstract: This paper proposes new soft-switching interleaved boost converters (SSIBC) for photovoltaic powergeneration systems. The SSIBCs presented comprises with additional dual and single auxiliary cells.The main active switches of these converters are able to provide zero voltage switching (ZVS) andzero current switching (ZCS) operation by means of dual auxiliary and single auxiliary cells,respectively. The proposed converters are capable to reduce turn on and turn off switching powerlosses with their soft-switching operation and consequently, they mitigate the overall efficiency. Inaddition, the auxiliary switches also achieve soft-turn on and turn off operation, during the total softswitching region of main switches. The detailed principle of operation and simulation evaluationspresented in this paper validate the effectiveness and soft-switching ability of the proposed interleavedboost converters.

	Resonant DC/DC converter with class __2 inverter and class DE rectifier based on GaN HEMT By Junping HE	[View] [Download]
Abstract: A resonant DC/DC converter with Class F2 inverter and Class DE rectifier based on GaN HEMT is designed and validated. A PCB plane transformer is designed to realize the isolation of the primary side and the secondary side of the converter. The output voltage is regulated by hysteresis ON/OFF control. The operation principle and design procedure are introduced in detail.

	SISO Control Strategy of Resonant Dual Active Bridge with a Tuned CLC Network By Meiqi WANG	[View] [Download]
Abstract: This paper proposed a linear state-space model for a resonant dual active bridge with a tuned capacitor-inductor-capacitor network which is applied to an energy storage system. The proposed model is used for predicting the behavior of the proposed system and estimated the state variables under large signal variation. Using the proposed model, a decoupled control strategy was designed which realizes the high frequency link currents control and also improves the efficiency of the converter. By applying the steady-state relationship between state variables and the system inputs, the controller was simplified to a single proportional integral (PI) controller instead of from three PI controllers, which was implemented on a low cost digital signal processor and verified experimentally.