Adaptive Gate Delay-Time Control of Si/SiC Hybrid Switch for Efficiency Improvement in Inverters

One of the main shortcomings in a field effect diode (FED) is its scaling. Use of an oxide layer in the channel is proposed to enhance the control of the gate on the channel carriers. This is the so-called silicon on raised insulator FED (SORI-FFD) structure. The Shockley–Read–Hall (SRH) mechanism is one of the main components of leakage current in FED devices. The potential induced by the gates in the OFF-state of a SORI-FFD, is larger than that induced by the gates of a regular FED. This reduces, SRH recombination rate. Hence, OFF-state characteristics of the SORI-FED device improves. We evaluate the impact of band-to-band tunneling (BTBT) on the electrical characteristics of Modified FED (M-FED).We show that for channel lengths of 35 nm and lower this device does not turn off. While, the proposed structure makes device channel length scaling possible down to 15 nm. We will also compare electrical characteristics of SORI-FED and M-FED using three metrics: gate delay time versus channel length, gate delay time versus I ON /I OFF ratio and energy-delay product versus channel length. Benchmarking results show the proposed FED structure provides improvement in I ON /I OFF ratio and holds promise for future logic transistor applications.

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A 13.56 MHz, 94.1% Peak Efficiency CMOS Active Rectifier With Adaptive Delay Time Control for Wireless Power Transmission Systems

IEEE Journal of Solid-State Circuits ◽

10.1109/jssc.2019.2894359 ◽

2019 ◽

Vol 54 (6) ◽

pp. 1744-1754 ◽

Cited By ~ 5

Author(s):

Zhongming Xue ◽

Shiquan Fan ◽

Dan Li ◽

Lina Zhang ◽

Wei Gou ◽

...

Keyword(s):

Delay Time ◽

Power Transmission ◽

Wireless Power ◽

Wireless Power Transmission ◽

Peak Efficiency ◽

Transmission Systems ◽

Active Rectifier ◽

Time Control ◽

Power Transmission Systems

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Implementation of 3.3-kW GaN-based DC-DC converter for EV on-board charger with series-resonant converter that employs combination of variable-frequency and delay-time control

2016 IEEE Applied Power Electronics Conference and Exposition (APEC) ◽

10.1109/apec.2016.7468035 ◽

2016 ◽

Cited By ~ 4

Author(s):

Yungtaek Jang ◽

Milan M. Jovanovic ◽

Juan M. Ruiz ◽

Misha Kumar ◽

Gang Liu

Keyword(s):

Delay Time ◽

Variable Frequency ◽

Resonant Converter ◽

Time Control ◽

Series Resonant

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High-Precision Synchronous Implementation during Seismic Data Acquisition

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.171-172.764 ◽

2010 ◽

Vol 171-172 ◽

pp. 764-768 ◽

Cited By ~ 2

Author(s):

Qi Wang ◽

Ming Deng ◽

Qi Sheng Zhang ◽

Rui Yang

Keyword(s):

Data Acquisition ◽

Data Transmission ◽

Seismic Data ◽

Delay Time ◽

Positive Direction ◽

Power Stations ◽

Time Control ◽

Seismic Data Acquisition ◽

Hardware Circuit ◽

Delayed Time

Seismic Synchronous acquisition means the Field Digitizer Unit acquiring data of each geophone at the same time. Here we will present a method to realize synchronous data acquisition of which the synchronous process is finished at FDU. A timer will be used to precisely measure the time difference between data transmission in positive direction and that in negative direction. And then work out the delayed time needed by each FDU. In that way, when receiving the command to acquire data synchronously again, the delay time control AD transformation can be well dealt with, so as to realize the purpose of synchronous resetting and acquisition. Through hardware circuit test, the two power stations have 15 FDU and each station is 25m or 50m apart, Accuracy of synchronization at each acquisition station reach 200ns. Besides, this method can be used for reference for technology of synchronization of other serial acquisition systems.

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