Design and realization of high-precision digital control direct current power supply

Author

Jing, Haixia ; Liu, Zhengguo ; Wang, Haiyan ; Shen, Xiaohong

Author_Institution

Sch. of Marine Eng., Northwestern Polytech. Univ., Xi´´an, China

fYear

2011

fDate

16-18 April 2011

Firstpage

4894

Lastpage

4897

Abstract

A high-precision digital control DC power supply based on singlechip STC89C52, A/D converter AD7705, D/A converter DAC7512 and three terminal adjustable regulator LM317 is designed and realized, which uses MCU as the center, and adopts 12 DAC DA7512 to realize digital control and 16 ADC AD7705 and LCD to the measurement and display of output voltage. The voltage adjustment range of this system is 0-13V, and the deviation of display value and set value is not more than 1%, voltage step value is 0.01 V. The experimental result shows that the system can well solve the accuracy of output adjustable voltage, and is characterized by high precision, easy to use and simple circuit.

Keywords

analogue-digital conversion; digital control; digital-analogue conversion; microcontrollers; power control; power supplies to apparatus; voltage control; AD7705 analogue-digital converter; DAC7512 digital-analogue converter; LM317 adjustable regulator; STC89C52 singlechip; direct current power supply; high-precision digital control; microcontroller unit; voltage 0 V to 13 V; voltage 0.01 V; voltage adjustment range; Accuracy; Digital control; Digital signal processing; Microcomputers; Power supplies; Voltage control; Voltage measurement; AD7705; DAC7512; DC power supply; digital control powe; voltage regulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on

Conference_Location

XianNing

Print_ISBN

978-1-61284-458-9

Type

conf

DOI

10.1109/CECNET.2011.5768894

Filename

5768894