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For better conductivity entire mask could be removed and solder can be placed. But the direction and shape of the mask makes me curios, there might be some good technical reason behind it.
Today I found a damaged power supply PCB. Why are those copper pours have solder mask removed in that particular manner.
I could also observe a white layer(may be silk screen layer) on top of many tracks(at the edges on figure). Can anyone explain why this kind of pcb design was done.
Primary side current limit will limit only peak current. For accurate limiting of output side, use a current shunt at the output and use a comparator to drive an opto-coupler for remote on/off. Refer to the figure 37 and 39 of the data sheet.
Of course it is doable. You should go for a digital signal controller (DSC). You will have the flexibility to demonstrate all kind of control algorithm , linear control or even non linear. You could also demonstrate softstart, over voltage, under voltage shutdowns, different type of current...
But I have seen a Microchip Reference design of 200W LLC supply, with 200kHz switching frequency with a 70 MIPS dsPIC. But I have to say TI has great support.
Hey guys
Which is the most widely used DSC for digital power supplies. There are so many DSC, I am getting confused. MicroChip has a good portfolio of DSC for DC DC converter(dsPIC). Texas's TMS series seems too much for cost sensitive designs. What is the realistic requirement in term of MIPS...
Yes Metal PCB are single layer PCB. In that way power board can be designed on one PCB and control board on a different PCB. I have seen a TI inverter of 14kW design was doe on Metal PCB .
Why can't we go with bootstrap capacitor for high side switching. With careful design it can operate very reliably at fixed frequency and a range of duty cycle.
But as of original question
1. A step down from 311V - 62V calls for isolation. Consider the failure of your buck converter power...
Hey guys
I want to design a DC DC isolated power supply with input range of 9-72V and output of 28V and 10A. What could be the best choice of topology. I have been looking into active clamp forward converter topology.
Is there is a possibility to make and cascaded converter with a non...
You should mention your load regulation on the output. I assumed that 5v will be for microprocessor supply and 12V for ICs supply. Better go for a flyback converter with feedback as weighted values of two output.
Hey Guys,
I am very new to high current power supply, how high current (100A) power supplies are made in PCB. I am trying to design a 12V 100A power supply, but very confused about how to handle 100A on the output side. I have search in the Internet, but didn't got the whole idea. Can anyone help
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