A 4-MHz Digitally Controlled Voltage-Mode Buck Converter With Embedded Transient Improvement Using Delay Line Control Techniques

2020 ◽  
Vol 67 (11) ◽  
pp. 4029-4040
Author(s):  
Qiwei Huang ◽  
Chenchang Zhan ◽  
Jinwook Burm
Keyword(s):  
Delay Line ◽  
Buck Converter ◽  
Control Techniques ◽  
Voltage Mode ◽  
Digitally Controlled ◽  
Transient Improvement

A 30-MHz Voltage-Mode Buck Converter Using Delay-Line-Based PWM Control

2018 ◽  
Vol 65 (11) ◽  
pp. 1659-1663 ◽  
Author(s):  
Qiwei Huang ◽  
Chenchang Zhan ◽  
Jinwook Burm
Keyword(s):  
Delay Line ◽  
Buck Converter ◽  
Pwm Control ◽  
Voltage Mode

INSTABILITIES IN DIGITALLY CONTROLLED VOLTAGE-MODE SYNCHRONOUS BUCK CONVERTER

2012 ◽  
Vol 22 (01) ◽  
pp. 1250012 ◽  
Author(s):  
DONGSHENG YU ◽  
HERBERT H. C. IU ◽  
HAO CHEN ◽  
E. RODRIGUEZ ◽  
E. ALARCÓN ◽  
...  
Keyword(s):  
Buck Converter ◽  
Describing Function ◽  
Stability Range ◽  
Voltage Mode ◽  
Theoretical Predictions ◽  
Digitally Controlled ◽  
Z Domain ◽  
The Stability ◽  
Laboratory Prototype ◽  
Bifurcation Behavior

In this paper, instabilities and bifurcation behavior in a DC–DC digitally controlled voltage-mode synchronous buck converter (SBC) are studied. The bifurcation diagram of the system under a proportional-integral (PI) compensation is presented. Following the system mathematical description in the continuous time domain, the z-domain pulse transfer function is derived in terms of system parameters. The stability range of the design parameter is obtained in closed form by using the Jury test combined with the describing function (DF) method. Experimental measurements from a laboratory prototype are used to validate the theoretical predictions and the numerical simulations.

Application of Digital Control Techniques for Satellite Medium Power DC-DC Converters

2011 ◽  
Vol 57 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Konrad Skup ◽  
Paweł Grudziński ◽  
Piotr Orleański
Keyword(s):  
Digital Control ◽  
High Speed ◽  
Control Process ◽  
Digital Signal ◽  
Current Mode ◽  
Power Converter ◽  
Buck Converter ◽  
Research Centre ◽  
Analog To Digital ◽  
Control Techniques

Application of Digital Control Techniques for Satellite Medium Power DC-DC Converters The objective of this paper is to present a work concerning a digital control loop system for satellite medium power DC-DC converters that is done in Space Research Centre. The whole control process of a described power converter is based on a high speed digital signal processing. The paper presents a development of a FPGA digital controller for voltage and current mode stabilization that was implemented using VHDL. The described controllers are based on a classical digital PID controller. The converter used for testing is a 200 kHz, 750W buck converter with 50V/15A output. A high resolution digital PWM approach is presented. Additionally a simple and effective solution of filtering of an analog-to-digital converter output is presented.

Adaptive Control for Buck Power Converter Using Fixed Point Inducting Control and Zero Average Dynamics Strategies

2015 ◽  
Vol 25 (04) ◽  
pp. 1550049 ◽  
Author(s):  
Fredy Edimer Hoyos Velasco ◽  
Nicolás Toro García ◽  
Yeison Alberto Garcés Gómez
Keyword(s):  
Fixed Point ◽  
Digital Signal ◽  
Power Converter ◽  
Buck Converter ◽  
Control Techniques ◽  
Comparison Results ◽  
Control Scheme ◽  
Rapid Control ◽  
Rapid Control Prototyping ◽  
Lms Method

In this paper, the output voltage of a buck power converter is controlled by means of a quasi-sliding scheme. The Fixed Point Inducting Control (FPIC) technique is used for the control design, based on the Zero Average Dynamics (ZAD) strategy, including load estimation by means of the Least Mean Squares (LMS) method. The control scheme is tested in a Rapid Control Prototyping (RCP) system based on Digital Signal Processing (DSP) for dSPACE platform. The closed loop system shows adequate performance. The experimental and simulation results match. The main contribution of this paper is to introduce the load estimator by means of LMS, to make ZAD and FPIC control feasible in load variation conditions. In addition, comparison results for controlled buck converter with SMC, PID and ZAD–FPIC control techniques are shown.

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