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Experimental Implementation of a Pre-Charge Circuit at eFuse to Control and Limit Inrush Currents of Automotive ECUs.

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Title: Experimental Implementation of a Pre-Charge Circuit at eFuse to Control and Limit Inrush Currents of Automotive ECUs.
Authors: Reddy, C. Naga Kota1 cnkreee@gmail.com, Rani, K. Sandhya2 sandhyaranik@aec.edu.in, Mohiddin, Khaja Gouse3 md.mohiddin146@gmail.com, Babu, Ch. Sai4 chs_eee@jntucek.ac.in
Source: Engineering Letters. Dec2025, Vol. 33 Issue 12, p4910-4916. 7p.
Subjects: Antilock brake systems in automobiles, Electronic control, Electric transients, Automotive electronics, Voltage regulators, Electric circuits, Electric noise, Simulation methods & models
Abstract: The Anti-lock Braking System (ABS) is a vital component in automotive safety, preventing wheel lock-up and maintaining steering control during braking. The use of in wheel motors greatly enhances the effectiveness of ABS by allowing each wheel to be controlled independently, resulting in greater precision and responsiveness in braking performance. The Electronic Control Unit (ECU) plays a critical role in automotive functions like ABS. The ECU, along with motors used for ABS, is typically powered by buck converters, which efficiently step down voltage. However, the output of buck converters often introduces voltage ripple, which is filtered using capacitors. When these capacitors are connected to the power supply, they can cause significant inrush currents at startup, leading to voltage drops, electromagnetic interference, and potential damage to sensitive ECU components. To address this issue, a pre-charge circuit has been designed to gradually ramp up the supply voltage, thereby limiting inrush currents and protecting the ECU. This solution enhances the reliability and safety of the ECU while prolonging the lifespan of key electronic components. The effectiveness of the proposed pre-charge circuit is validated through simulation and experimental studies conducted on both 12 V and 17 V load profiles, demonstrating improved system performance and smooth operation of motor-driven components in the braking system. [ABSTRACT FROM AUTHOR]
Copyright of Engineering Letters is the property of International Association of Engineers (IAENG) and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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An: 189696742
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  Label: Title
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  Data: Experimental Implementation of a Pre-Charge Circuit at eFuse to Control and Limit Inrush Currents of Automotive ECUs.
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  Data: <searchLink fieldCode="AR" term="%22Reddy%2C+C%2E+Naga+Kota%22">Reddy, C. Naga Kota</searchLink><relatesTo>1</relatesTo><i> cnkreee@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Rani%2C+K%2E+Sandhya%22">Rani, K. Sandhya</searchLink><relatesTo>2</relatesTo><i> sandhyaranik@aec.edu.in</i><br /><searchLink fieldCode="AR" term="%22Mohiddin%2C+Khaja+Gouse%22">Mohiddin, Khaja Gouse</searchLink><relatesTo>3</relatesTo><i> md.mohiddin146@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Babu%2C+Ch%2E+Sai%22">Babu, Ch. Sai</searchLink><relatesTo>4</relatesTo><i> chs_eee@jntucek.ac.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Engineering+Letters%22">Engineering Letters</searchLink>. Dec2025, Vol. 33 Issue 12, p4910-4916. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Antilock+brake+systems+in+automobiles%22">Antilock brake systems in automobiles</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+control%22">Electronic control</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+transients%22">Electric transients</searchLink><br /><searchLink fieldCode="DE" term="%22Automotive+electronics%22">Automotive electronics</searchLink><br /><searchLink fieldCode="DE" term="%22Voltage+regulators%22">Voltage regulators</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+circuits%22">Electric circuits</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+noise%22">Electric noise</searchLink><br /><searchLink fieldCode="DE" term="%22Simulation+methods+%26+models%22">Simulation methods & models</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The Anti-lock Braking System (ABS) is a vital component in automotive safety, preventing wheel lock-up and maintaining steering control during braking. The use of in wheel motors greatly enhances the effectiveness of ABS by allowing each wheel to be controlled independently, resulting in greater precision and responsiveness in braking performance. The Electronic Control Unit (ECU) plays a critical role in automotive functions like ABS. The ECU, along with motors used for ABS, is typically powered by buck converters, which efficiently step down voltage. However, the output of buck converters often introduces voltage ripple, which is filtered using capacitors. When these capacitors are connected to the power supply, they can cause significant inrush currents at startup, leading to voltage drops, electromagnetic interference, and potential damage to sensitive ECU components. To address this issue, a pre-charge circuit has been designed to gradually ramp up the supply voltage, thereby limiting inrush currents and protecting the ECU. This solution enhances the reliability and safety of the ECU while prolonging the lifespan of key electronic components. The effectiveness of the proposed pre-charge circuit is validated through simulation and experimental studies conducted on both 12 V and 17 V load profiles, demonstrating improved system performance and smooth operation of motor-driven components in the braking system. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Engineering Letters is the property of International Association of Engineers (IAENG) and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 4910
    Subjects:
      – SubjectFull: Antilock brake systems in automobiles
        Type: general
      – SubjectFull: Electronic control
        Type: general
      – SubjectFull: Electric transients
        Type: general
      – SubjectFull: Automotive electronics
        Type: general
      – SubjectFull: Voltage regulators
        Type: general
      – SubjectFull: Electric circuits
        Type: general
      – SubjectFull: Electric noise
        Type: general
      – SubjectFull: Simulation methods & models
        Type: general
    Titles:
      – TitleFull: Experimental Implementation of a Pre-Charge Circuit at eFuse to Control and Limit Inrush Currents of Automotive ECUs.
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            NameFull: Reddy, C. Naga Kota
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            NameFull: Rani, K. Sandhya
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            NameFull: Mohiddin, Khaja Gouse
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            NameFull: Babu, Ch. Sai
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            – D: 01
              M: 12
              Text: Dec2025
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              Y: 2025
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