This video includes Buck boost converter output voltage derivation with following outlines: 1. Buck boost Converter 2. Basics of Buck boost Converter 3. Circuit of Buck boost Converter 4. Working of Buck boost Converter 5. Buck boost converter output voltage derivation For free materials of different engineering subjects use my android application named Engineering Funda with following link: https://play.google.com/store/apps/details?id=com.viaviapp.ENG_Funda Above Android application of Engineering Funda provides following services: 1. Free Materials (GATE exam, Class Notes, Interview questions) 2. Technical Forum 3. Technical discussion 4. Inquiry For more details and inquiry on above topic visit website of Engineering Funda with given link: http://www.engineeringfunda.co.in Engineering Funda channel is all about Engineering and Technology. Here this video is a part of Power Electronics.
Views: 8694 Engineering Funda
Steve Butler, V.P. of Engineering at VPT, discusses the definition and causes of common mode and differential mode output ripple and simple, effective ways to control output ripple. http://www.vptpower.com/ See all of VPT's videos on technical issues for incorporating DC-DC power converters, EMI filters, and other power products into your avionics, military, or other high reliability power system: http://www.vptpower.com/video/
Views: 87200 VPT Tech Videos
Deriving the equation for sizing the output capacitor of a buck converter based on the output voltage ripple. We wear triangle "Q" (for charge) hats to help you remember how to calculate the output capacitor value. *Note: Still working on reducing mic noise. We've got a low-budget setup here. ^^;;
Views: 10349 katkimshow
Here, we introduce the buck-boost converter topology and it's two switching operation modes. We derive the relationship between the input voltage, average output voltage, and active switch duty ratio.
Views: 86721 katkimshow
How to measure the output ripple as well as improving filter methods for the ouput of a dc dc converter. Improve the output filtering with this video from Vicor Corporation. Learn the theory behind it and a step-by-step bench demonstration measuring output ripple. Be sure to subscribe to Vicor Corporation's channel for more videos. More videos on this topic are available on our DC- DC Converters playlist https://www.youtube.com/playlist?list=PLOFm1WdHpufBnZXwjxSU2qGSs5r_uEhav Visit us at: http://www.vicorpower.com/"
Views: 6305 Vicor Corporation
Switching Power Converters: Electric Power supplies. My Patreon page is at https://www.patreon.com/EugeneK
Views: 301781 Physics Videos by Eugene Khutoryansky
Switching DC-DC Converters from China are low cost and functional most of the time for many power electronic applications. It can cost 5-10 times more to make/order a similar unit from Digikey. One thing that is common to nearly all low-cost Chinese DC converters is the omission of a few critical parts to make it from a product that is going to smoke or One-Hung-Lo to a product that is smoking the competion. It is usually the regulator feedback stability that is the main issue. Search Onstate Youtube channel for testing of various DC-DC converters. Subscribe for technical support. Please read description and product datasheet before comments/questions.
Views: 1144 Onstate LED Lighting
Two techniques are demonstrated to resolve load sharing problem that occur when using D.C. Power Supplies in parallel. If you are interested in purchasing one of my LDMOS amplifiers, you may contact me at 678-646-8986 or checkout my website at RFlinear-amplifiers.com
Views: 4910 RF Man Channel
Here, we introduce the boost converter topology and it's two switching operation modes. We derive the relationship between the input voltage, average output voltage, and active switch duty ratio.
Views: 89249 katkimshow
In this Power Tip Robert Kollman discusses a mistake designers make often and that is putting too much ripple current into a capacitor that may shorten its lifetime.
Views: 5555 Texas Instruments
How to increase power with paralleling DC-DC converters. Vicor Corporation's Dave Berry, Field Applications Engineer helps delineate the primary reasons for paralleling DC-DC converters: to increase power or provide fault tolerance. In that context, the value of current sharing and methods of achieving it are shared. Find out more about Vicor's DC DC converters: https://www.youtube.com/playlist?list=PLOFm1WdHpufBnZXwjxSU2qGSs5r_uEhav Keep up to date with Vicor Power. Subscribe below. https://www.youtube.com/user/vicorpower Vicor Corporation : Visit us at: http://www.vicorpower.com
Views: 5355 Vicor Corporation
To download the project files referred to in this video visit: http://www.keysight.com/find/eesof-how-to-dc-dc To apply for free trial of ADS visit: http://www.keysight.com/find/mytrial.rfmw.sm This video introduces basic DC-to-DC converter operation, explains why voltage spikes occur in these circuits, and shows the importance of modeling PC board layout effects. There is an example in which current visualization is used to see potential problem areas in the PC board. The layout is then modified to improve performance.
Views: 202410 Keysight EEsof EDA
Deriving the critical inductance value for the buck converter. The selection of the inductor value above or below the critical inductance value determines if the buck converter operates in
Views: 9815 katkimshow
Quick testing of eBay 10A 250W boost converter module. TL494 pulse-width-modulation controller with two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5V 5% regulator, and output-control circuits. Supplier specifications: DC DC Boost Converter Constant Current Mobile Power supply 250W 10A LED Driver Input: 8.5-48V DC Input Current: 10A (MAX) Output: 10-50V adjustable Output Current: 10A (MAX) 6A nominal Output Constant Current: 0.2-8A Switching Frequency: 150KHz Temperature: -40 to + 85oC Efficiency: up to 96% Over current protection:Yes (automatic output voltage reduction at 13A) Input Reverse Polarity Protection: Yes(5A) Installation: 4 PCS 3mm screw holes Dimension:70*36*18mm (2.76"x1.42"x0.71") Weight: 65g, aluminum-clad PCB. Module parts: TL494 PWM DC converter controller SOIC-16 4x 50V 220uF ele. cap. M10100 10A 100V dual Schottky diode D-PAK (TO-252) NCE6075k NCE Power N-CH MOSFET 60V 75A 11.5mΩ D-PAK (TO-252) R010 current shunt resistor 10k CV 10-turns trimmer resistor 50k CC 10-turns trimmer resistor SS54 5A 40V schottky, input reverse protection shunt. Testing: -CH1 (top) inductor switching signal. DC 10V/div 2us. -CH2 (bottom) output signal. AC 0.5V/div. -DMM: output voltage. -10/20ohms load power resistors. Test 1: Power/voltage stability. Input 11.9V 1.83A, out 20V 20ohms. 92% eff. 100-116kHz Stable switching. 0.3Vp-p ripples, 1.3Vp-p spike, Output voltage load transient +/-5% voltage under/over shoot. Test 2: CV adj. No load. 54.8V output max. Test 3: Power supply 12-0-12V slow decrease/increase. At 6.5V, output overshoots to 42V from 18.46V. No under-voltage lock-out (UVLO). Test 4: Adjust input voltage. 18.4V out 20 ohms load. Some jittery switching at some voltage ranges. Test 5: (4:35) 10ohms load. CC trip for low voltage out. Adj CC for full Vout. Some jittery switching at some CC ranges. 2.0Vp-p spikes, 0.4Vp-p AC ripples. 89%eff. Recommendation: Works as designed. Acceptable for boost LED driver in CC mode. Limited to general high-tolerance, low-precision electronic applications due to high output transient load over/under shoot, noise and no UVLO. Slow transient/feedback response. Dedicated DC-DC converter ICs are better for DC converter regulator applications. Subscribe for technical support. Please read description before comments or questions.
Views: 4324 Onstate LED Lighting
We show how to build and perform simulations on a buck converter using LTSpice IV. Some useful links: LTSpice IV Shortcuts/Directives http://cds.linear.com/docs/en/software-and-simulation/LTspiceIV_flyer.pdf PDF version of the help section http://ecee.colorado.edu/~mathys/ecen1400/pdf/scad3.pdf
Views: 64956 Ben Byers
Basic idea of Volt-second balance for an inductor. We derive the condition that states that the average voltage over an inductor must be zero when the current is in average steady state.
Views: 9763 katkimshow
I found out that my 12v battery charger was putting out nearly 16v while charging my batteries!! They were literally sizzling inside! Here I use a DC-DC Boost Buck Converter to lower the output to a much more sensible and safe 13.80v. Here are some specs on the converter I purchased: Input voltage: DC 3-15v Output voltage: DC 0.5-30v Input current: 3A (max) Power: 25W (max) Conversion Efficiency: 95% Switching Frequency: 150KHz Output Ripple: 40mV (max) Load Regulation: +/- 0.5% Voltage Regulation: +/- 2.5% Operating Temp: -40c to +85c Dimensions: 48mm x 23mm x 14mm approx. Open Short Circuit Protection: Yes Thanks for watching, and please check your chargers output!
Views: 4949 TheLastPost
I explain buck converters (a type of switch mode power supply) and how to build a 5V 5A power supply using an LM2678. Website: http://www.afrotechmods.com/ Parts: http://octopart.com/bom-lookup/781DMaFT Schematic: https://i.imgur.com/iwWnvXv.jpg
Views: 669408 Afrotechmods
Boost converter simulation/modelling using simulink MATLAB. A boost converter (step-up converter) is a DC-to-DC power converter with an output voltage greater than its input voltage. It is a class of switched-mode power supply (SMPS) containing at least two semiconductors (a diode and a transistor) and at least one energy storage element, a capacitor, inductor, or the two in combination. Filters made of capacitors (sometimes in combination with inductors) are normally added to the output of the converter to reduce output voltage ripple. Buck Converter: https://www.youtube.com/watch?v=ojlw4o8TiAM
Views: 100346 Saad Aamir
View datasheet for 6A three-level buck battery charger http://www.ti.com/product/bq25910 This video explains what is at the heart of the new 3-level buck battery charger technology and how it allows for up to 5% efficiency improvements compared to conventional architectures, ultimately leading to quicker charge times with less thermal loss. Read related blog: How to Increase Charging Current by 50% with Half the Size in Portable Electronics http://e2e.ti.com/blogs_/b/powerhouse/archive/2018/02/28/how-to-increase-charging-current-50-percent Read the blog: New Technology Chargers Your Smartphone in just 30 Minutes http://e2e.ti.com/blogs_/b/thinkinnovate/archive/2018/03/13/new-technology-charges-your-smartphone-in-just-30-minutes View full portfolio of TI's battery charger ICs for faster and cooler charging http://www.ti.com/power-management/battery-management/charger-ic/overview.html
Views: 1825 Texas Instruments
A first look at this high efficiency (up to 98%) high current (10A) DC/DC converter employing 4-switch synchronous rectification. Based on the LTC3780 controller IC. LTC3780 Automatic lifting pressure Constant voltage step up step down 10A 130W http://www.ebay.co.uk/itm/-/221595657364
Views: 89963 Julian Ilett
An overview of how switching is controlled in switching regulators. Focuses on three popular control algorithms: constant on-time, voltage mode control and current-mode control.
Views: 7369 Maxim Integrated
You Can Buy This Module From Here! https://goo.gl/JPjX7k For More Visit SmartEshop.pk/Shop Buy Now Electronics Item From Daraz: Azeem Electronics. https://goo.gl/2nDQu7 Smarteshop.pk https://goo.gl/uSCDSt A2Z ELECTRONICS https://goo.gl/zkSs28 Hi Guys This is a DC-DC boost converter step-up power module with high-precision potentiometer, and it uses XL6009E1 with the second generation of high-frequency switching technology as core chip, so that its performance is much higher than the first-generation technology LM2577. With high switching frequency of 400KHz, even small-capacity filter capacitors can bring with very nice results, while the ripple is less and the size is smaller. Specifications: Input voltage range: 3V-32V (the best working voltage range is 5-32V) Output voltage range: 5V-35V With built-in 4A MOSFET switch tube, the efficiency can reach up to 94% (current of LM2577 is 3A only) Ultra-high switching frequency up to 400KH. A small-capacity filter capacitor can achieve very good results, while with smaller ripple and size. (frequency of LM2577 is 50KHz only) __/Contect Us\_ ► Website:➜www.mrengineerpk.blogspot.com ► Facebook Page:➜ https://web.facebook.com/MrEngineerpk/ ► Facebook Group:➜https://www.facebook.com/groups/274894166291057/ ► Twitter:➜ https://twitter.com/Chaloay62 ► Google+:➜ https://plus.google.com/b/113564937800036615715/113564937800036615715 __|Watch More Videos|_ ♥Mini Power Inverter 12v Dc To 220V Ac https://youtu.be/iwCp3zkiicQ ♥Gas Soldring Iron Review! https://www.youtube.com/watch?v=RBLEWWd4lTM ♥How To Make UPS Power Inverter Full Detail https://www.youtube.com/watch?v=dnimjdJIeMU ♥All China Lcd/Led Softwere. https://www.youtube.com/watch?v=PmLRs7x32y4 ♥Electric Wiring Of Home. https://www.youtube.com/watch?v=hJdrU49STI0 ♥How To Run Wifi Router On Power Bank And 12v Battery. https://www.youtube.com/watch?v=G1igtisvPIY ♥Automatic Street Light Sensor https://www.youtube.com/watch?v=YFL-bLnwWmI ♥Control Your Fan And Light With Remote https://www.youtube.com/watch?v=b5QMXqT4oJc
Views: 65867 Mr Engineer
In this video, shows how a Boost converter design, How to design of boost converter and find the parameter of Boost converter L and C value. Design of boost converter depends on the value of L and C. In this video the values of L and C calculation is done. For standard value of the inductor and capacitor, you can search online. ** 1.Boost Converter using MATLAB Simulink (2016), Simulation with an Example https://youtu.be/VzWDJQJN9lM Music: https://www.bensound.com
Views: 13226 Techno Trip
Maximum Boost Control of Diode Assisted Buck–Boost Voltage Source Inverter with Minimum Switching Fr Diode-assisted buck-boost voltage-source inverter achieves high voltage gain by introducing a switch-capacitor based high step-up dc-dc circuit between the dc source and inverter bridge. As for the unique structure, various pulse width modulation (PWM) strategies are developed with regard to the chopped intermediate dc-link voltage. In order to maximize voltage gain and increase efficiency, this paper proposes a novel PWM strategy. It regulates the average value of intermediate dc-link voltage in one switching time period (Ts) the same as the instantaneous maximum value of three-phase line voltage by controlling the front boost circuit. Then, the equivalent switching frequency of power devices in the inverter bridge can be reduced to 1/3fs(fs = 1/Ts). The operating principle and closed-loop controller design are analyzed and verified by simulations and experiments. Compared with existing PWM strategies, the new control strategy demonstrates less power device requirement and higher efficiency in high voltage gain applications. It is a more competitive topology for wide range dc/ac voltage regulation in renewable energy applications. Furthermore, with new control strategy, the dc-side inductor current and capacitor voltage contains six-time line-frequency ripples. To overcome the undesired influence of low frequency ripples, it is also suitable for 400-800 Hz medium frequency aircraft and vessel power supply system. Web : http://ieeemaster.com/ Web : http://www.lemenizinfotech.com/ Web : http://www.lemenizinfotech.com/tag/ieee-projects-in-pondicherry/ web : http://ieeemaster.com/power-electronics-ieee-projects-2017-2018/ http://www.lemenizinfotech.com/power-electronics-ieee-projects-2017-2018/ Mail : [email protected] / [email protected] Mobile : 9566355386 / 9962588976
Views: 55 LeMeniz Infotech
This video shows how I put together a 5V 6A power source for LED strips. Higher currents can be achieved by putting more of the cheap converters in parallel. Links to the parts (I get small cut at no extra cost for you): Find the cheap-ass dc converters here: http://s.click.aliexpress.com/e/uzrVrnieY http://amzn.to/2dEYIuS http://ebay.to/2dNmjFv Check out the corresponding project on the main channel: https://youtu.be/7Dv70ci-MOw You can support me on Patreon: https://www.patreon.com/bitluni
Views: 2933 bitluni's trash
Dave takes you step-by-step through designing a DC-DC converter using the venerable MC34063. And then he builds it and checks the performance.
Views: 200927 EEVblog
Jeremy Ferrell explains how to obtain multiple output voltages using VPT DC-DC products.
Views: 1077 VPT Tech Videos
Welcome to GATEMATIC Education Pvt. Ltd. Faculty : Sohail Ansari Website : http://www.gatematic.in/ SUBSCRIBE : https://goo.gl/6b5CCc To watch NETWORK THEORY Videos Go through this link: https://tinyurl.com/zzdjzna To watch POWER ELECTRONICS Videos Go through this link: https://tinyurl.com/kg6mhn7 To watch CONTROL SYSTEM Videos Go through this link: https://goo.gl/WhFE7m To watch ANALOG ELECTRONICS Videos Go through this link: https://tinyurl.com/lrjzflm To watch COMMUNICATION SYSTEM Videos Go through this link: https://goo.gl/3oPobn To watch ELECTRONIC DEVICES & CIRCUITS Videos Go through this link: https://goo.gl/sifczu ★☆★ FOLLOW ME BELOW: ★☆★ Blog: https://sohailansaari.wordpress.com/ Facebook: https://www.facebook.com/learngatefree/ GooglePlus: https://plus.google.com/+LearnGATEFreeOnline Twitter: https://twitter.com/gatematic Instagram: https://www.instagram.com/gatematic/ This Channel is run by SOHAIL ANSARI: https://goo.gl/A5KVGM
Views: 54351 GATEMATIC Education
Simple 12V to 30V boost 200W inverter converter | How to make Simple 12V to 30V boost 200W inverter converter | How to make Simple 12V to 30V boost 200W inverter converter | How to make A boost converter (step-up converter) is a DC-to-DC power converter that steps up voltage (while stepping down current) from its input (supply) to its output (load). It is a class of switched-mode power supply (SMPS) containing at least two semiconductors (a diode and a transistor) and at least one energy storage element: a capacitor, inductor, or the two in combination. To reduce voltage ripple, filters made of capacitors (sometimes in combination with inductors) are normally added to such a converter's output (load-side filter) and input (supply-side filter). Download file here: http://123link.pro/bt9e70 (click link, click i;m not robot, wait 7 sec, click get link - ok ) #inverter #12vto220v #invertersine
Views: 1630 Homemade 102
Good day! Here are 2 little circuit that I found off internet that might be usefull for some people! A little transistor buck converter to step down voltage and a constant current source for various projects. Hope you enjoye if you have any question just ask them
Views: 13381 bakupcpu
An intuitive explanation of the original average modeling and simulation approach of switch mode converters. The presentation covers average modeling and large and small signal simulation. The original paper that explains the method can be downloaded from: http://www.ee.bgu.ac.il/~pel/pdf-files/jour92.pdf other related papers can be found at: http://www.ee.bgu.ac.il/~pel/public.htm PSPICE/Orcad examples can be downloaded from the following site. These are of old PSPICE versions but Orcad will automatically convert them to a newer version. http://www.ee.bgu.ac.il/~pel/download.htm
Views: 9983 Sam Ben-Yaakov
.This video is reviews the Booster converter that converts 2V-24V to 4V to 27V at 2A. The module is tested to convert: -3.3V to 5V 2A -3.3V to 5V 1A -9V to 12V 2 -9V to 12V 1A -12V to 24V 2A -12V to 24V 1A I need your help Please visit my other channel and subscribe: http://bit.ly/2tGgYc4 Tutorial by Robojax.com Get other projects code and learn Arduino http://robojax.com/learn/arduino 20190312-1538 20190318-AD
Views: 36365 Robojax
.In this video you will see the 9A 280W DC buck converter being used and tested under different current and voltage condition. Watch Setting Output Voltage at 02:17 The following test have been performed: input: 12V -Output 9V at 9A watch itat 04:15 -Output 9V at 8.5A, -Output 9V at 8A -Output 5V at 9A watch it at 07:44 -Output 5V at 8.5A, -Output 5V at 8A -Output 3.3V at 9A watch it at 08:52 -Output 3.3V at 8.5A, -Output 3.3V at 8A Datasheet for XL4016 http://www.xlsemi.com/datasheet/xl4016%20datasheet.pdf Tutorial by Robojax.com Get other projects code and learn Arduino http://robojax.com/learn/arduino 20190318-AD
Views: 21803 Robojax
Download the TPS54A20 datasheet http://www.ti.com/lit/ds/symlink/tps54a20.pdf Buck converters have been the entrenched workhorses of the power supply industry for decades. Here at TI, we are excited to introduce a new dc-dc converter top
Views: 4411 Texas Instruments
3V to 12V Simple Boost Converter Projects for Science Experiments. About This Video :- A boost converter (step-up converter) is a DC-to-DC power converter that steps up voltage (while stepping down current) from its input (supply) to its output (load). It is a class of switched-mode power supply (SMPS) containing at least two semiconductors (a diode and a transistor) and at least one energy storage element: a capacitor, inductor, or the two in combination. To reduce voltage ripple, filters made of capacitors (sometimes in combination with inductors) are normally added to such a converter's output (load-side filter) and input (supply-side filter). In this Tutorial, I will show you how to Make a Simple 3V to 12V Boost Converter using very fewer Components Note: Watch this Video Completely before attempting this Method. Materials Required : 1. 3.6V Battery 2. Inductor 3. Tactile Switch 4. 1N4007 Diode Circuit Diagram : - https://drive.google.com/open?id=19Y9p_7I-4OsOzjCyUu8crgmida7Stn0S #3Vto12V #BoostConverter #StepupVoltage #BuckBoostConverter #ElectronicsProjects #DIY #LifeHacks #HowtoMake your queries:- how to make boost converter how to make boost converter at home how to make simple boost converter how to make 3v to 12v how to make 3v to 12v converter **************************************************** Thanks for Watching : LIKE | COMMENT | SHARE | SUBSCRIBE **************************************************** Other Interesting Project Videos Links: 3 DOF Pick and Place Robotic ARM : http://bit.ly/2yd2DX0 Scrolling Message Display using Bluetooth : http://bit.ly/2yd2DX0 Pollution Monitoring System using IoT : http://bit.ly/2yzstnt Solar Inverter 12V to 220AC : http://bit.ly/2A4T7a9 **************************************************** Connect with InnoSpire Subscribe : http://bit.ly/2A4nugF Website : http://www.htslabz.com Mail us at: [email protected] Facebook : http://bit.ly/2EbJ5HZ Wastapp : 7780280714 *************************************************** About InnoSpire Channel : InnoSpire is a YouTube Channel, Where you will fine Technological Videos related to Free DIY Project, Tutorials, Tech Updates and Many More. New Videos are Posted Every Day. Videos are in Language : Hindi, Telugu and English ************************************************** Music Provided by NCS Release- JPB - High _NCS Release_
Views: 2644 INNOSPIRE
this is my experiment high efficiency synchronous buck converter using mosfet switching technics..this experiment for my buddy ham radio addict.they want use li-po battery coz of light weight but voltage is high..never find in market buck regulator over 10amp..but now i try build high performance buck converter with latest electronic component 95% efficiency in term voltage ripple during load..this buck converter also can use for solar charging application..(DC-DC Converter) example = 35v solar panel+50A buck converter+PWM charger+Battery = Thats like MPPT system..can handle 35.0v input..12-15.0v adjustable output steady.with current booster..
Views: 3008 wajaeboseben
This DC converter had worked for about one year before failing. It was powering an antenna and Ethernet switch which drew around 0.5 Amp.The input voltage was nominally 12 volts from a solar panel and the output 24 volts. The converter is based on the common UC3843 chip.With no load the unit operates OK with 24 volts output. As soon as the load is applied the output voltage drops. On visual inspection the problem appears to be the input capacitor. Examining the capacitor under a microscope confirms it is damaged. The capacitor is also tested with a capacitance meter and an ESR meter. The capacitor is replaced and the converter tested for correct operation. Click Here to Subscribe http://bit.ly/1nformatica Digital Microscope http://bit.ly/USBuscope Good source of electronic parts: http://bit.ly/ElecComps DISCLAIMER: Unless otherwise stated all products shown in this video have been purchased personally. The description and video may contain links to products which might be affiliate links, so if you click on one of the product links I could receive a small commission. This does not affect the price you pay. If you do purchase through my affiliate link this will help fund future videos, thank you for your support! #1nformatica
Views: 2527 1nformatica
View integrated circuits, reference designs, application notes and trainings for single phase UPS http://www.ti.com/solution/single_phase_ups The 2-kW isolated bidirectional DC-DC converter reference design (TIDA-00951) is capable of power transfer between a 400-V DC-BUS and a 12-14 cell lithium battery pack for use in UPS, battery backup and power storage applications.
Views: 4475 Texas Instruments
Switching waveform testing of a DPH3205 buck-boost DC converter. Specifications: Rui Deng DPH3205 160W Buck-boost Converter Constant Voltage Current Programmable Digital Control Power Supply Module Color LCD Voltmeter Input: 6V-40V, 10A max. Output: 0V-32V, 5A max. 160W Output ripple: 100mVp-p Output voltage resolution: 0.01V Output current resolution: 0.001A Output Voltage accuracy: ± (0.5% + 1 digit) Output Current accuracy: ± (0.5% + 3 digits) Temperature: -10°C to 45°C Weight: ~227g Display module: 79x43x41(mm) (L*W*H) Power module: 93x71x41(mm) (L*W*H) The module boosts (step-up) the input voltage to a set 36VDC output, then bucks (step-down) to the required output voltage. Parts: 1. K0660 (Q4/5): 60V, 40A, 5.1mOhms, N-Ch MOSFET. Input power protection. 2. LTC1871 (LTSXES, U3): 2.5V-36Vin, no Rsense, current mode boost, flyback and SEPIC Controller, external N-CH MOSFET, MSOP-10. Boost mode regulation. 3. XL7005 (U03): 0.4A 150KHz 65V buck DC-DC, SOP8-EP. Pre-regulator. 5Vout. 4. 7133H (U4): 3.3V, LDO, uController regulator, SOT-89 5. STK17 (U5): 3.3V, LCD regulator, SOT-89 6. RB085T-60 (D6/): Schotty diode array, 60V 5A, TO-220-3 Full Pack. 7. TL594CN: PWM control circuit, SOIC-16. Buck mode regulation 8. SGM8582 (U2): 2.5V-5.5V op-amp, SOIC-8. 9. LM321M (A63A, U3)): single op-amp, SOT-23-5 10. MT3608 (B6286, U01): 2V-24Vin, 4A internal MOSFET, boost DC-DC, SOT23 11. AOD2810: 80V 46A, N-CH MOSFET. Boost switch (under heatsink). 12. AOD409: 60V 26A, P-CH MOSFET. Buck switch (under heatsink). 13. STM32F100: main uController 14. 9uH inductor: input boost converter. 15. 53uH inductor: output buck converter. 16. 470uF 50V electrolytic capacitors (3x) 17. 470uF 63V electrolytic capacitors (2x) 18. 220uF 35V electrolytic capacitor. 19. Current shunt resistors. 20. Display and control module. Testing Setup: DMM: Output voltage measurements. DC adjustable power supply. CH1 (top trace): Switching MOSFET gate. CH2 (bottom trace): Switching inductor. Load: 6.0 ohms power resistors. Testing Results: Test1: Boost mode (boost to 36V output). N-CH MOSFET gate: 5.3Vgate, 13.4Vp-p Vspike, 100kHz switching frequency, acceptable square wave. Inductor: Constant 36V switching, some ringing. Test2: Buck mode. P-CH MOSFET gate: 10.5Vgate, 13.4Vp-p Vspike, 68kHz switching frequency, clean stable square wave. Inductor: Constant 36V switching, stable square wave. Output: 0-32.0V output, 100-150mVp-p output ripples, 1.8Vp-p Vspikes. Stable switching. -83%-90% overall efficiency. -Stable output voltage. -Voltmeter measurements acceptable. -Extra filter inductor and capacitor required to filter output switching voltage spikes. -Output power start-up is quick and stable with minimal overshoot. -Quick input power loss will cause the module to reboot. -Good for resistive loads. -Fairly quick load transient response. Recommendation: Good overall design/layout. Functions as designed. Good overall efficiency. Output noise may cause interferrence with load electronics. Pass preliminary testing as a good, economical hobbyist programmable power supply. UPDATE: Further testing suggests that the module is best for resistive loads and loads in constant voltage operation. Constant current battery charging maybe acceptable. Constant current LED loads works best with LED panel connected before module power-up. If module output power is on without the LED module connected, LED module failure may occur due to high surge current from slow feedback response. Subscribe for technical support. Please read description and product datasheet before comments/questions.
Views: 1654 Onstate LED Lighting
Power Electronics and Distributed Generation by Dr. Vinod John,Department of Electrical Engineering,IISc Bangalore.For more details on NPTEL visit http://nptel.ac.in
Views: 3695 nptelhrd