Research Article | OPEN ACCESS
The Design of the Parallel Switching Power Supply System
1Bin Zhang, 1Hong Li and 2Xia Lei
1Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211, China
2Ningbo City College of Vocational Technology, Ningbo 315100, China
Research Journal of Applied Sciences, Engineering and Technology 2013 18:3404-3409
Received: January 21, 2013 | Accepted: February 18, 2013 | Published: October 10, 2013
Abstract
This study introduces a parallel switching power supply system which is controlled by C8051F020 MCU. The system consists of DC/DC converter, voltage-controlled constant current source circuit, over-current protection circuit and auxiliary power supply. TPS54331 is used to constitute a highly efficient DC/DC converter, reducing the input DC voltage to supply the voltage-controlled constant current source circuit. The parallel current-sharing of the system is realized by the voltage-controlled constant current source circuit. The output current of the two parallel power supply can be adjusted by changing the control voltage. When the output current exceeds the set value, the system starts over-current protection circuit to cut off the power and delays to restore power automatically after a certain period of time. The test results show that the system is stable and reliable, easy to control and has a function of over-current protection and automatic recovery.
Keywords:
C8051F020 MCU, DC/DC converter, over-current protection, parallel current-sharing, voltagecontrolled constant current source,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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