Title page for etd-0614114-133104


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URN etd-0614114-133104
Author Yi-lun Wu
Author's Email Address No Public.
Statistics This thesis had been viewed 5350 times. Download 0 times.
Department Electrical Engineering
Year 2013
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title A High Voltage Operational Amplifier with Rail-to-rail Input and Output Ranges and an 8:1 Analog High Voltage Multiplexer
Date of Defense 2014-06-26
Page Count 76
Keyword
  • high-voltage amplifier
  • high-voltage switch
  • high-voltage analog multiplexer
  • battery management system
  • rail-to-rail input and output ranges
  • Abstract One of the key techniques of electric vehicles (EVs) is battery management systems,
    which demand the development of battery modules, the measurement circuits of batteries,
    and so on. This thesis investigates a high-voltage operational amplifier with rail-to-rail
    input and output ranges, and an 8:1 analog high-voltage multiplexer for the battery voltage
    measurement.
    This thesis proposes a high-voltage operational amplifier with rail-to-rail input and
    output ranges to meet the required amplifier for the aforementioned technology. It also
    carries out the signal transfer circuit design for battery management systems, such as subtractor,
    analog to digital converter. Since the input range of the design could be up to 30
    V, and the output range is 0 ∼ 29.57 V, ADC with a high input range is no longer needed
    hereby. Although the dc gain is 41 dB, the gain error can be corrected by using low-bit
    ADCs. Finally, this design is expected for battery management systems to attain accurate
    SOC estimation .
    Another key circuit is the high-voltage multiplexer. This thesis proposes a 8:1 highvoltage
    analog multiplexer which can be used to measure the voltage of a single cell in
    a battery string. If the battery modules consists of eight batteries connected in series and
    the voltage of a battery cell is 2.5 V to 4.5 V, the input voltage range is 0 ∼ 36 V. To
    resolve the high input voltage problem, this thesis demonstrates a 8:1 high-voltage analog
    multiplexer, where the output voltage range is in line with SAR ADC input voltage range
    of 1.5 ∼ 3.5 V.
    Advisory Committee
  • Chin-Long Wey - chair
  • Yun-Nan Chang - co-chair
  • Tong-Yu Hsieh - co-chair
  • Chua-Chin Wang - advisor
  • Files
  • etd-0614114-133104.pdf
  • Indicate in-campus at 99 year and off-campus access at 99 year.
    Date of Submission 2014-07-14

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