Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Sanghyun Cha"'
Publikováno v:
International Journal of Automotive Technology. 16:309-315
This paper introduces a capacity fade model for Lithium-Ion batteries based on Single Particle model (SP model), a type of reformulated form of Psuedo 2D model first propose d by Doyle et al. The model simulates the loss of active material in the cat
Publikováno v:
International Journal of Automotive Technology. 15:795-803
A transient numerical model of a lithium ion battery (LiB) pack with air cooled thermal management system is developed and validated for electric vehicle applications. In the battery model, the open circuit voltage and the internal resistance map bas
Publikováno v:
International Journal of Automotive Technology. 15:625-635
Optimal control is generally not possible without information about the future coming up, and it is not easy to obtain an optimal solution even though the information is given a priori. In this paper, a control concept based on Pontryagin’s Minimum
Autor:
Jae Shin Lee, Joongho Choi, Hyobum Lee, Yuenjoong Lee, Sanghyun Cha, Deukhee Park, Chang Seok Lee
Publikováno v:
ICCE
This paper presents a noble AC/DC converter-free LED driver for LED lighting applications. The presented LED driver applies the AC mains power directly to the LED strings with no AC/DC converter stage, thus bulky transformer and life-time limiting el
Publikováno v:
2011 IEEE International Conference on Consumer Electronics (ICCE).
This paper presents a 135-channel electronic-paper (e-paper) driver IC for electronic shelf label (ESL). The number of stages and the multiple of stage of charge pump are controlled and varied in order to extend a life of battery. And the chip-optimi
Autor:
Chang Seok Lee, Sanghyun Cha, Hawoong Jeong, Jeashin Lee, Deukhee Park, Kyoung-Soo Kwon, Chae-Dong Go
Publikováno v:
SPIE Proceedings.
The conventional scheme of optical pick-up unit (OPU) should require two or three optoelectronic integrated circuits (OEICs) to cover triple-wavelength λ =780nm, 650nm and 405nm). In order to reduce cost and waste of resources, onechip solution of t
Autor:
Jaeheon Lee, Jubong Park, Gyusuck Kim, Kyoungseok Park, Heonchul Park, Sanghyun Cha, Sunjun Ko, Yosub Moon
Publikováno v:
2008 International SoC Design Conference.
A CMOS RF receiver for L1/L1F and L5/E5a dual-band GPS/Galileo system is designed in a 0.13 m standard CMOS process. It can be fully integrated in System-on-Chip (SoC) solution for GPS and Galileo. The receiver includes a low-noise amplifier (LNA), d
Publikováno v:
ISCAS
The analog front end (AFE) chip is presented to perform precise automatic focus operations with a piezoelectric actuator for mobile phone camera applications. In order to achieve the desired frequency response of a piezoelectric actuator, the frequen
Publikováno v:
2007 International Symposium on Communications and Information Technologies.
A low -voltage wide-band active-RC filter for wireless communication transceivers is presented. It is the 5th-order Chebyshev-II low pass filter with the bandwidth of 20 MHz. To guarantee high linear characteristic at a low supply voltage, the input
Publikováno v:
TENCON 2006 - 2006 IEEE Region 10 Conference.
This paper presents the design of a 1.2 V wideband active-RC filter for wireless communication receivers. The topology of this filter is the 5 th-order Chebyshev-II lowpass filter type. The 3 dB bandwidth is 20 MHz while the stopband attenuation larg