Simple and Digital Implementation of PI Controller Used in Voltage-Mode Control | IEEE Conference Publication | IEEE Xplore

Simple and Digital Implementation of PI Controller Used in Voltage-Mode Control


Abstract:

This paper contains a solution for a digital PI controller implemented in a synchronous Buck converter used in Constant Voltage configuration. In such applications, a dig...Show More

Abstract:

This paper contains a solution for a digital PI controller implemented in a synchronous Buck converter used in Constant Voltage configuration. In such applications, a digital PI controller can replace a traditional PI compensation network made with analog components. This is an approachable solution because Proportional and Integral blocks can be easily defined following a transfer function which can tune the respectively coefficients until a stable DC/DC converter is obtained. The PI terms can be digitally implemented using a microcontroller, and then added to the entire system which must provide an adequate response time, maintain system stability and reduce the output voltage steady-state error. A closed loop control system simulation will confirm the above statements. The main advantage of the digital PI control is that no additional analog components are required, resulting in a higher level of integration, also device calibration can be done more smoothly.
Date of Conference: 28-30 June 2018
Date Added to IEEE Xplore: 04 April 2019
ISBN Information:
Conference Location: Iasi, Romania

References

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