An Open-Loop Time Amplifier With Zero-Gain Delay in Output for Coarse-Fine Time to Digital Converters

2021 ◽  
Author(s):  
S. Morteza Golzan ◽  
Jafar Sobhi ◽  
Ziaddin Daie Koozehkanani
Keyword(s):  
Open Loop ◽  
Time Amplifier ◽  
Fine Time

Analysis on a Cascaded Structure in Open-Loop Time Amplifier for High-Speed Operation

2013 ◽  
Vol 596 ◽  
pp. 171-175
Author(s):  
Kiichi Niitsu ◽  
Naohiro Harigai ◽  
Daiki Hirabayashi ◽  
Masato Sakurai ◽  
Yusuke Osawa ◽  
...  
Keyword(s):  
Recovery Time ◽  
High Speed ◽  
Open Loop ◽  
Time Amplifier

This work presents a study on design for obtaining high-speed operation in a cascaded open-loop time amplifier. Cascaded structure is effective for high-speed operation because recovery time from metastability per stage can be reduced. SPICE simulations with 65 nm CMOS have performed for verifying the effectiveness of the cascaded structure. Simulated results show that the cascaded time amplifier can achieve high-speed operation.

An open-loop differential time amplifier

2014 ◽  
Author(s):  
Hye-Jung Kwon ◽  
Ji-Hoon Lim ◽  
Byungsub Kim ◽  
Jae-Yoon Sim ◽  
Hong-June Park
Keyword(s):  
Open Loop ◽  
Time Amplifier

Analysis of an Open-Loop Time Amplifier With a Time Gain Determined by the Ratio of Bias Current

2014 ◽  
Vol 61 (7) ◽  
pp. 481-485 ◽  
Author(s):  
Hye-Jung Kwon ◽  
Jae-Seung Lee ◽  
Byungsub Kim ◽  
Jae-Yoon Sim ◽  
Hong-June Park
Keyword(s):  
Open Loop ◽  
Bias Current ◽  
Time Amplifier

Set of open-loop block-diagonalizers of transfer matrices

1989 ◽  
Vol 49 (1) ◽  
pp. 161-168
Author(s):  
A. Bülent Özgü Ler ◽  
Vasfi Eldem
Keyword(s):  
Open Loop ◽  
Transfer Matrices

On closed-loop equilibrium strategies for mean-field stochastic linear quadratic problems

2020 ◽  
Vol 26 ◽  
pp. 41
Author(s):  
Tianxiao Wang
Keyword(s):  
Optimal Control ◽  
Closed Loop ◽  
Optimal Control Problems ◽  
Mean Field ◽  
Open Loop ◽  
Time Inconsistency ◽  
Control Problems ◽  
Linear Quadratic ◽  
Linear Quadratic Optimal Control ◽  
Equilibrium Strategies

This article is concerned with linear quadratic optimal control problems of mean-field stochastic differential equations (MF-SDE) with deterministic coefficients. To treat the time inconsistency of the optimal control problems, linear closed-loop equilibrium strategies are introduced and characterized by variational approach. Our developed methodology drops the delicate convergence procedures in Yong [Trans. Amer. Math. Soc. 369 (2017) 5467–5523]. When the MF-SDE reduces to SDE, our Riccati system coincides with the analogue in Yong [Trans. Amer. Math. Soc. 369 (2017) 5467–5523]. However, these two systems are in general different from each other due to the conditional mean-field terms in the MF-SDE. Eventually, the comparisons with pre-committed optimal strategies, open-loop equilibrium strategies are given in details.

Comparison of Dc-Dc SEPIC, CUK and Flyback Converters Based LED Drivers

2020 ◽  
pp. 99-107
Author(s):  
Erdal Sehirli
Keyword(s):  
Integrated Circuit ◽  
Closed Loop ◽  
Input Voltage ◽  
Open Loop ◽  
Current Sensor ◽  
Switching Frequency ◽  
Led Driver ◽  
Advantages And Disadvantages ◽  
Led Drivers ◽  
Conduction Mode

This paper presents the comparison of LED driver topologies that include SEPIC, CUK and FLYBACK DC-DC converters. Both topologies are designed for 8W power and operated in discontinuous conduction mode (DCM) with 88 kHz switching frequency. Furthermore, inductors of SEPIC and CUK converters are wounded as coupled. Applications are realized by using SG3524 integrated circuit for open loop and PIC16F877 microcontroller for closed loop. Besides, ACS712 current sensor used to limit maximum LED current for closed loop applications. Finally, SEPIC, CUK and FLYBACK DC-DC LED drivers are compared with respect to LED current, LED voltage, input voltage and current. Also, advantages and disadvantages of all topologies are concluded.

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