A digital pulse width modulation closed loop control LDMOS gate driver for LED drivers implemented in a 0.18 μm HV CMOS technology

2017 ◽  
Author(s):  
Sebastian Strache ◽  
Leo Rolff ◽  
Stefan Dietrich ◽  
Michael Hanhart ◽  
Tobias Zekorn ◽  
...  
Keyword(s):  
Pulse Width ◽  
Closed Loop ◽  
Pulse Width Modulation ◽  
Cmos Technology ◽  
Closed Loop Control ◽  
Loop Control ◽  
Digital Pulse ◽  
Gate Driver ◽  
Led Drivers

scholarly journals Analytically Modeling, Design and Analysis a Nonlinear Controller for a STATCOM operations

2018 ◽  
Vol 7 (4) ◽  
pp. 221
Author(s):  
J. K. Moharana
Keyword(s):  
Pulse Width ◽  
Closed Loop ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Closed Loop Control ◽  
Nonlinear Controller ◽  
Performance Indices ◽  
Static Synchronous Compensator ◽  
Loop Control ◽  
Relevant Variables

The concept of H Control is extended, in principle, to the SVPWM (Space Vector Pulse Width Modulation) based inverter switching of a STATCOM (STATic synchronous COMpensator) device. The SVPWM assures a greater value of modulation factor in the undermodulation as well as the overmodulation range compared to SPWM (Sine Pulse Width Modulation) i.e. a much higher fundamental content. In the present work, the STATCOM has been modeled and its model is nonlinear in  (phase angle between fundamental of system voltage and output voltage of STATCOM. The effect of increased modulation index and lower harmonic distortion has been studied through simulation w.r.t. different performance indices and dynamic response of relevant variables. A PI and an H Controller have been designed for closed-loop control of the system. It is found through simulation that H controller gives better response than PI controller for nonlinear system.

scholarly journals Analysis of Sinusoidal Pulse Width Modulation Parameter Settings in High Precission Closed Loop Full Bridge Bipolar Inverters for High Voltage High Frequency Generator

Teknik ◽  
2020 ◽  
Vol 41 (1) ◽  
pp. 55-61
Author(s):  
Abdul Syakur ◽  
Arifin Wibisono
Keyword(s):  
High Voltage ◽  
High Frequency ◽  
Pulse Width ◽  
Large Scale ◽  
Closed Loop ◽  
Pulse Width Modulation ◽  
Waste Treatment ◽  
Electrical Energy ◽  
Loop Control ◽  
Sinusoidal Pulse Width Modulation

The application of high voltage becomes more important and wider. High voltage is needed in the process of reducing air contaminants, waste treatment, sanitation, disinfecting microorganisms, testing for insulating high voltage equipment, and transmitting electrical energy. The problem of high voltage AC generation system is still in a large scale, static, not portable, and very expensive. This paper presents an analytical design of a high-voltage AC high-frequency based on power electronic. It is portable, less expensive, and eaasier to control the amplitudo and frequency. The application of the Full Bridge Bipolar Inverter topology with the Sinusoidal Pulse Width Modulation switching method provides variable sinusoidal AC voltage outputs (Vo) on its amplitude and frequency. The Tesla Coil Transformer amplifies the amplitude in accordance with the classification of the high voltage AC in the order of Kilo Volt. The Closed Loop control system in the Bipolar Inverter Full Bridge topology provides high accuracy results between the given setting values and the actual amplitude output and the expected high-frequency AC voltage. Analysis of the SPWM switching pattern parameter settings shows stability for several loading variations

scholarly journals The Design Methodology of Fully Digital Pulse Width Modulation

2021 ◽  
Vol 11 (4) ◽  
pp. 41
Author(s):  
Fadi R. Shahroury
Keyword(s):  
Pulse Width ◽  
Design Methodology ◽  
Pulse Width Modulation ◽  
Average Power ◽  
Cmos Technology ◽  
Good Choice ◽  
Ring Oscillator ◽  
Envelope Detector ◽  
Digital Pulse ◽  
Average Power Consumption

This paper describes the design methodology and calibration technique for a low-power digital pulse width modulation demodulator to enhance its robustness against the process, voltage, and temperature variations in different process corners, in addition to intra-die variability, which makes it a very good choice for implantable monitoring sensors. Furthermore, the core of the proposed demodulator is fully digital. Thus, along with the proposed design methodology, the proposed demodulator can be simply redesigned in advanced subnanometer CMOS technologies without much difficulty as compared to analog demodulators. The proposed demodulator consists of an envelope detector, a digitizer, a ring oscillator, and a data detector with digital calibration. All the proposed circuits are designed and simulated in the standard 1P9M TSMC’s 40 nm CMOS technology. Simulation results have shown that the circuit is capable of demodulating and recovering data from an input signal with a carrier frequency of 13.56 MHz and a data rate of 143 kB/s with an average power consumption of 5.62 μW.

Closed-loop Control using Electrotactile Feedback Encoded in Frequency and Pulse Width

2020 ◽  
Vol 13 (4) ◽  
pp. 818-824
Author(s):  
Jakob L. Dideriksen ◽  
Irene Uriarte Mercader ◽  
Strahinja Dosen
Keyword(s):  
Pulse Width ◽  
Closed Loop ◽  
Closed Loop Control ◽  
Loop Control

scholarly journals Design of closed-loop control for Solar PV based Multi-Level Inverter

2019 ◽  
Vol 9 (2S3) ◽  
pp. 123-129
Keyword(s):  
Closed Loop ◽  
Pulse Width Modulation ◽  
Input Voltage ◽  
Multilevel Inverter ◽  
Modulation Method ◽  
Closed Loop Control ◽  
Solar Pv ◽  
Loop Control ◽  
Switching Losses ◽  
Capacitor Voltage

Photovoltaic (PV) based multilevel inverters (MLI) have emerged as one of the best alternatives for grid/standalone applications. MLIs offer high range power handling capability with low current and voltage distortion and lesser switching losses as compare to the traditional two-level inverter. Major challenges with generally used multilevel inverter topologies relates to capacitor voltage variation, modulation techniques, and control. The major center of attention of research in this paper is to build up sophisticated modulation and voltage balancing methods for multilevel inverter topologies, competent to reach capacitor voltage parameter and to decrease power switching losses of the inverters. The present paper focuses on closed-loop control of multilevel flying capacitor inverter (FCI). In FCI, the phase shift (PS) based pulse width modulation method is designed and investigated. The closed-loop controller is designed with input voltage control of MLI, whose source is solar PV based Boost converter. Reported simulation results prove the superiority of the closed loop control in maintaining the desired output voltage for various reference values.

COMPLEMENTARY AND DOUBLE-EDGE BASED: A 5-BIT CMOS DIGITAL PULSE-WIDTH MODULATION (PWM) DESIGN WITH MULTIPLE OUTPUTS FOR LED DIMMING APPLICATION

2014 ◽  
Vol 23 (02) ◽  
pp. 1450030 ◽  
Author(s):  
YU-CHERNG HUNG
Keyword(s):  
Pulse Width ◽  
High Speed ◽  
Pulse Width Modulation ◽  
Supply Voltage ◽  
Light Emitting Diode ◽  
Cmos Technology ◽  
Chip Area ◽  
Double Edge ◽  
Digital Pulse ◽  
Dimming Control

In this paper, a compact high-precision digital pulse-width modulation (DPWM) CMOS circuit is proposed. The circuit, with multiple output capability, allows brightness control of red, green, and blue (RGB) light emitting diode (LED) lighting. The PWM technique is used for LED dimming control to avoid the problem of color shifting. In this design, complementary concepts and hardware sharing are utilized to achieve a compact architecture and small chip area. A double-edge triggered technique is adopted to enhance the capability of high-speed operation. An experimental chip has been realized by using TSMC 0.18-μm CMOS technology. Simulation results show that the proposed 5-bit PWM circuit can operate at 200 MHz, 32 duty cycles adjustable, and within only 1-ns time error. The chip's measured results show that the new PWM circuit with three output channels works successfully at a supply voltage of 1.8-V, clock of 50-MHz, and resolution of 32 adjustable per channel. The core area of the chip is only 280 × 52.5 μm2.

scholarly journals CPS-SPWM Implementation Based on Multi - Controller Collaboration

2021 ◽  
Vol 2076 (1) ◽  
pp. 012112
Author(s):  
HongShe Dang ◽  
JunDa Li
Keyword(s):  
Sampling Method ◽  
Closed Loop ◽  
Pulse Width Modulation ◽  
Control Structure ◽  
Experimental Result ◽  
Closed Loop Control ◽  
Development Cost ◽  
Voltage Waveform ◽  
Loop Control ◽  
Natural Sampling

Abstract In order to improve the modularization degree of cascaded H-bridge converter and reduce the development cost, a modularized carrier phase shifted sine pulse width modulation (CPS-SPWM) based on multi-controller is proposed in this paper, which can easily increase or decrease the number of submodules in cascaded H-bridge. In order to solve the problem of coordination in multi-controller structure, a two-stage control structure is proposed, which uses the master controller to carry out closed-loop control for multiple slave controllers, and uses the approximate natural sampling method to realize digital CPS-SPWM modulation, which reduces computation and makes full use of controller resources. The experimental result shows that the stepped voltage waveform output by the proposed method at the AC side is of high quality and H bridge submodule is easy to be increased and decreased.

The Impact of Visual Feedback Type on the Mastery of Visuo-Motor Transformations

2012 ◽  
Vol 220 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Sandra Sülzenbrück
Keyword(s):  
Empirical Research ◽  
Visual Feedback ◽  
Closed Loop ◽  
Motor Planning ◽  
Visual Input ◽  
Closed Loop Control ◽  
Loop Control ◽  
Feedback Type ◽  
Effective Use ◽  
The Impact

For the effective use of modern tools, the inherent visuo-motor transformation needs to be mastered. The successful adjustment to and learning of these transformations crucially depends on practice conditions, particularly on the type of visual feedback during practice. Here, a review about empirical research exploring the influence of continuous and terminal visual feedback during practice on the mastery of visuo-motor transformations is provided. Two studies investigating the impact of the type of visual feedback on either direction-dependent visuo-motor gains or the complex visuo-motor transformation of a virtual two-sided lever are presented in more detail. The findings of these studies indicate that the continuous availability of visual feedback supports performance when closed-loop control is possible, but impairs performance when visual input is no longer available. Different approaches to explain these performance differences due to the type of visual feedback during practice are considered. For example, these differences could reflect a process of re-optimization of motor planning in a novel environment or represent effects of the specificity of practice. Furthermore, differences in the allocation of attention during movements with terminal and continuous visual feedback could account for the observed differences.

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