I have been working on this design with max power of 600 watts.Topology used is half bridge boost converter. Image has the detail of each component i have used.
It works fine without rectifying diodes. if diodes are connected then no load current goes high up to 2.5A at duty cycle above 80%. Mosfet are just warming a little.
Dead time provided by TL494 is at default value and is approximated as 7-8%.
What can be the problem? Suggest me the area of improvements in design of snubber circuit and gate driving circuit.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
It works fine without rectifying diodes. if diodes are connected then no load current goes high up to 2.5A at duty cycle above 80%. Mosfet are just warming a little.
Dead time provided by TL494 is at default value and is approximated as 7-8%.
What can be the problem? Suggest me the area of improvements in design of snubber circuit and gate driving circuit.
CAN Someone contact Workhorse for me and let him's know i am trying to contact him's for more questions. 😉 I tried to contact hims with the email address provided but it got bounced 😕 🙁
So if someones knows Workhorse please please tell hims i want to email hims for more info on this SMPS for a better parts list.
Gday
Greetings 😎 🙂
happy holidays
So if someones knows Workhorse please please tell hims i want to email hims for more info on this SMPS for a better parts list.
Gday
Greetings 😎 🙂
happy holidays
sir, i am newbie to this forum
1. can i use 3 amp step down transformer using iron core utilizing inverter concept (12v dc to 220v ac)?
because i want to convert my 220 volt power amplifier to 12v for my pickup truck. thanks in advance sir
1. can i use 3 amp step down transformer using iron core utilizing inverter concept (12v dc to 220v ac)?
because i want to convert my 220 volt power amplifier to 12v for my pickup truck. thanks in advance sir
to risto80,,bro thank u so much for uploading the details as wellas d pcb layout of your smps,,it helps me a lot,,,jeph here from philippines
greetings....sir i have read ur article and see ur designs,,and i think this is it,,this is the one i am looking for,,i thank you for answering our problems with regards to 12v smps for car audio and amplifiers..i hope,you continue helping us,,hope in the future,,u can help me build a quite bigger design of high powered car amplifiers..once again,,jephrell tolentino of iloilo philippines,,home of well known BORACAY ISLAND,,a summer get away. thaks and regards.
748 replies and i can't understand what is the best schematic for smps and audio amp.
PLEASE, can somebody who test it tell us what is the best and safe (for car) schematic/s?
PLEASE, can somebody who test it tell us what is the best and safe (for car) schematic/s?
Hi all. I made 2 boards triell 3200, but i have some problems. I don't no SMPS for this amp, for this boards.
Help me please. Give me please PCB and shematic SMPS for this boards. Thank you...
I think, I will made this converter: smps xp-5000watts.
http://www.diyaudio.com/forums/power-supplies/236971-detex-audio-smps-xp-5000watts.html
Give me please shematic.
Help me please. Give me please PCB and shematic SMPS for this boards. Thank you...
I think, I will made this converter: smps xp-5000watts.
http://www.diyaudio.com/forums/power-supplies/236971-detex-audio-smps-xp-5000watts.html
Give me please shematic.
Hello simingx. The post is 624. I repeated assembly of your amplifier. Very high temperature keys. What resistance (Ohms) of primary winding of the transformer has to be? Sorry for my bad english, and computer translate.
I think you mean smps, not amplifier, since there is no amp there. Resistance of primary is below of what you can measure, so assume close to 0 on your multimeter
Hi Luka. Yes, resistance is 0. The quantity of turns in primary don't coincide (4-0-4 turns), it is necessary more. How many it is necessary rounds and what section of a wire?
4+4 is about the lowest you would want to go, you can use even more if you can (more wire used). 6+6 is probably the highest you would want to go, if you don't know anything about your core.
Wire size... depends on the current, switching freq.
Start with something like 3-4x 1mm if freq is around 35k or even lower. If higher, you will have to use smaller wire and more of them.
Wire size... depends on the current, switching freq.
Start with something like 3-4x 1mm if freq is around 35k or even lower. If higher, you will have to use smaller wire and more of them.