- Видео 258
- Просмотров 458 780
Marcos Alonso
Испания
Добавлен 20 сен 2013
Professor at University of Oviedo, Spain.
This channel is my personal notebook about relevant topics I am studying and want to keep recorded. This way, I can revisit them at any time. I like to learn new things. Join my channel if you want to learn along!
This channel is not for beginners though. A Bachelor degree with topics on electrical, electronics, and control engineering is assumed as the viewers' background.
Always check the comment section of each video. I will add there any correction or clarification when necessary. Nobody is perfect :)
Please, let me know your comments, and don't forget to subscribe. Thanks!
Main topics on this channel are: Electronics, Analog and Digital. Power Electronics. Open software for electronics design. And occasionally... Physics!
If you enjoy this channel and wish to support it with a small contribution you can do so through the PayPal link below. Thanks in advance.
You can also check out my books available on Amazon through the link below.
This channel is my personal notebook about relevant topics I am studying and want to keep recorded. This way, I can revisit them at any time. I like to learn new things. Join my channel if you want to learn along!
This channel is not for beginners though. A Bachelor degree with topics on electrical, electronics, and control engineering is assumed as the viewers' background.
Always check the comment section of each video. I will add there any correction or clarification when necessary. Nobody is perfect :)
Please, let me know your comments, and don't forget to subscribe. Thanks!
Main topics on this channel are: Electronics, Analog and Digital. Power Electronics. Open software for electronics design. And occasionally... Physics!
If you enjoy this channel and wish to support it with a small contribution you can do so through the PayPal link below. Thanks in advance.
You can also check out my books available on Amazon through the link below.
PE #82: Quasi-Resonant Flyback Converter
This video explains the operation of the quasi-resonant (QR) flyback converter. The operation of the converter during the off state is analyzed in detail to obtain the voltage across the switch. The output voltage and switching frequency in QR mode are also calculated. An example of simulation is Qspice is also shown.
Просмотров: 428
Видео
TT #9: Qspice Control Library
Просмотров 49521 день назад
This video introduces the Simulink compatible library for Qspice. This library is available from the GitHub repository at: github.com/marcosalonsoelectronics/website/tree/main/Qspice
PE #81: Dynamic Response of Constant-On-Time (COT) Control with Input Voltage Feedforward
Просмотров 232Месяц назад
In this video we study the constant-on-time control with input voltage feedforward of dc-dc converters and we present its dynamic response. The response is verified by Qspice simulations.
PE #80: Understanding Zero Voltage Switching in Half-Bridge Converters (Part II)
Просмотров 427Месяц назад
In this video we study the switching process is a half-bridge-based converter under zero-voltage-switching (ZVS) operation. The switching losses in the different elements are analyzed in detail. Qspice simulation are presented to illustrates the different ideas.
PE #79: Understanding Zero Voltage Switching in Half-Bridge Converters (Part I)
Просмотров 747Месяц назад
In this video we study the switching process is a half-bridge-based converter under zero-voltage-switching (ZVS) operation. The switching losses in the different elements are analyzed in detail. Qspice simulation are presented to illustrates the different ideas.
PE #78: Dynamic Response of DC-DC Converters under Constant On-Time (COT) Voltage Control
Просмотров 3542 месяца назад
This video explains the operation of constant-on-time (COT) voltage control of DC-DC converters, including its dynamic response. This control method uses the output voltage ripple to drive the switch using a on-shot circuit. The valley value of the output voltage ripple is used as control parameter. The static and dynamic behaviors are analyzed. Qspice simulations are used to illustrate the dif...
PE #77: Dynamic Response of DC-DC Converters under On-Time Current Control
Просмотров 3792 месяца назад
This video presents the on-time current control of dc-dc converters. This control method uses the switch on-time and the inductor valley current as control parameters. The static and dynamic behaviors are analyzed. Qspice simulations are used to illustrate the different ideas and verify the theoretical analysis.
PE #76: Dynamic Response of DC-DC Converters under Hysteretic Voltage Control
Просмотров 5782 месяца назад
This video presents the implementation of hysteretic voltage control of dc-dc converters. This is a control method that allows us to regulate the output voltage without having to design and implement a closed-loop compensator. The hysteretic comparator drives the switch directly from the output voltage ripple assuring high accuracy and extremely fast response. The main disadvantage of this cont...
TT #8: How to Create a One-shot circuit in Qspice
Просмотров 4003 месяца назад
This video explains how to create a one-shot circuit (monostable flip-flop) in Qspice. The video shows also how to create embedded components that can be simulated by themselves without carrying on a library file. This is very convenient to share simulation files with other people.
PE #75: Dynamic Response of DC-DC Converters under Hysteretic Current Control
Просмотров 3873 месяца назад
This video investigates the dynamic response of DC-DC converters under hysteretic current control. Qspice simulations are shown to illustrate the different concepts. It is shown how the hysteretic control is much faster than other control methods that operate at constant frequency, like the voltage-mode control or current-mode control. In hysteretic control there is no sampling effect because t...
PE #74: Single-Stage versus Integrated LED Drivers: A Comparison
Просмотров 2213 месяца назад
In this video a comparison of single-stage versus integrated off-line LED drivers is presented. An off-line LED driver is implemented using two different approaches. The first approach is based on using a high-power-factor single-stage flyback converter, while the second approach relies on the high-power-factor integrated buck-boost-flyback converter. The design of both converters is performed ...
PE #73: Effect of Loop Delay in Voltage-Mode-Controlled DC-DC Converters
Просмотров 5673 месяца назад
In this video we study the effect of the loop delay in the dynamic response of DC-DC converters. The loop delay further decreases the phase lag of the converter. This affects the phase margin of the converter, making it smaller and pushing the operation of the converter closer to the unstable region. Qspice simulation results are provided to verify the theoretical analysis.
PE #72: Improved Dynamic Model of Voltage-Mode-Controlled DC-DC Converters including Sampling Effect
Просмотров 8774 месяца назад
This video explains how to analyze the dynamic behavior of a voltage-mode-controlled DC-DC converter including sampling effect. The modulator sampling effect produces a phase lag that adds to the phase of the converter. This can make the converter unstable in closed loop if the loop-gain bandwidth is too close to half of the switching frequency. The model is verified by Qspice simulation.
FEMM #7: Steady-State Heat Flow Analysis
Просмотров 1,1 тыс.4 месяца назад
FEMM #7: Steady-State Heat Flow Analysis
PHY #6: Maxwell's Equations in Matter
Просмотров 3335 месяцев назад
PHY #6: Maxwell's Equations in Matter
PE #71: Improved Dynamic Model of Current-Mode-Controlled DC-DC Converters
Просмотров 8617 месяцев назад
PE #71: Improved Dynamic Model of Current-Mode-Controlled DC-DC Converters
PE #70: Solving Difference Equations
Просмотров 5787 месяцев назад
PE #70: Solving Difference Equations
PE #69: Digital Control of a Current-Mode DC-DC Buck Converter. Compensator Direct Synthesis
Просмотров 9527 месяцев назад
PE #69: Digital Control of a Current-Mode DC-DC Buck Converter. Compensator Direct Synthesis
DE #12: How to Program a Raspberry Pi Pico in C/C++. PWM and ADC Modules
Просмотров 9777 месяцев назад
DE #12: How to Program a Raspberry Pi Pico in C/C . PWM and ADC Modules
DE #11: How to Program a Raspberry Pi Pico in C/C++
Просмотров 1,2 тыс.8 месяцев назад
DE #11: How to Program a Raspberry Pi Pico in C/C
TT #6: Automatic Symbol Generation in LTspice
Просмотров 4228 месяцев назад
TT #6: Automatic Symbol Generation in LTspice
PE #66: Digital Control of a Current-Mode DC-DC Buck Converter
Просмотров 1,9 тыс.9 месяцев назад
PE #66: Digital Control of a Current-Mode DC-DC Buck Converter
TT #5: How to Handle C++ Module Parameters in Qspice
Просмотров 8349 месяцев назад
TT #5: How to Handle C Module Parameters in Qspice
PE #65: Effect of Sampling Period on the Closed-Loop Response of DC-DC Converters
Просмотров 1,2 тыс.9 месяцев назад
PE #65: Effect of Sampling Period on the Closed-Loop Response of DC-DC Converters
TT #4: How to Embed Components in Qspice (II)
Просмотров 5289 месяцев назад
TT #4: How to Embed Components in Qspice (II)
Qspice #9: Current-Mode Push-Pull Converter using the UC1846. Overcurrent Protection
Просмотров 5579 месяцев назад
Qspice #9: Current-Mode Push-Pull Converter using the UC1846. Overcurrent Protection
TT #3: How to Embed Components in Qspice
Просмотров 62710 месяцев назад
TT #3: How to Embed Components in Qspice