A linear constant current LED driver with no off-chip inductor or capacitor

被引：0
|
作者：
Wang, Chenyang [1 ]
Xi, Jianxiong [1 ]
He, Lenian [1 ]
机构：
[1] Zhejiang Univ, Inst VLSI Design, Hangzhou 310027, Peoples R China
来源：
2014 IEEE 23RD INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE) | 2014年
关键词：
LED driver; no off-chip inductor or capacitor; LED array; main controller; constant current source; high power factor; POWER-FACTOR;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a linear constant current LED driver with no off-chip inductor or capacitor. The proposed circuit consists of a main controller and constant current sources to drive the LED array. An improved control method is used for lighting the LED array step by step, shaping the output current in proportion to the input voltage. Each constant current source has functions of temperature compensation and over voltage protection. A prototype of a 7x7 LED array has been built to verify the control method. The chip is designed and implemented by using CSMC's 1 mu m 700V process. The post-layout simulation results indicate that under the 220V vertical bar rms 50Hz utility voltage, the system can realize a high power factor of 99.76% and a maximum power conversion efficiency of 90.68%.
引用
收藏
页码：2524 / 2528
页数：5
相关论文
共 50 条
  • [1] A Linear Constant Current LED Driver without off-chip Inductor and Capacitor
    Wu, Xufeng
    Leng, Yahui
    He, Lenian
    Xi, Jianxiong
    2015 IEEE 13TH INTERNATIONAL NEW CIRCUITS AND SYSTEMS CONFERENCE (NEWCAS), 2015,
  • [2] A high PF, high efficiency LED driver without off-chip inductor and capacitor
    Wu, Xufeng
    Sun, Kexu
    Leng, Yahui
    He, Lenian
    Xi, Jianxiong
    ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 2016, 86 (01) : 51 - 57
  • [3] A high PF, high efficiency LED driver without off-chip inductor and capacitor
    Xufeng Wu
    Kexu Sun
    Yahui Leng
    Lenian He
    Jianxiong Xi
    Analog Integrated Circuits and Signal Processing, 2016, 86 : 51 - 57
  • [4] CURRENT-LIMITED INVERTER OFF-CHIP DRIVER.
    Banker, D.C.
    Montegari, F.A.
    Norsworthy, J.P.
    IBM technical disclosure bulletin, 1983, 26 (7 A):
  • [5] OFF-CHIP DRIVER AND RECEIVER.
    Anon
    1600, (28):
  • [6] A Constant gm Current Reference Generator with Purely Off-Chip Resistor
    Shahghasemi, Mohsen
    Odame, Kofi M.
    2020 IEEE 63RD INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS), 2020, : 309 - 312
  • [7] IMPROVED PERFORMANCE CMOS OFF-CHIP DRIVER.
    Anon
    IBM technical disclosure bulletin, 1986, 28 (09): : 3970 - 3971
  • [8] Demodulation based testing of off-chip driver performance
    Daehn, W
    ETW 2001: IEEE EUROPEAN TEST WORKSHOP, PROCEEDINGS, 2001, : 42 - 47
  • [9] A linear LDO regulator with modified NMCF frequency compensation independent of off-chip capacitor and ESR
    Wang, Chua-Chin
    Huang, Chi-Chun
    Chio, U. Fat
    ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 2010, 63 (02) : 239 - 244
  • [10] A linear LDO regulator with modified NMCF frequency compensation independent of off-chip capacitor and ESR
    Chua-Chin Wang
    Chi-Chun Huang
    U. Fat Chio
    Analog Integrated Circuits and Signal Processing, 2010, 63 : 239 - 244
12345