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Hi I have a voltage shunt regulator with moderate current (1-2A) where I use two mosfet in the buffer stage in linear mode to regulate the output voltage. To compensate for the potential mismatch and drift of the inherent parameters of the mosfets (gm & vth) I have added a ballast resistor...
I would imagine the frequency has to be adjusted to compensate variations in load and input voltage. So you suggesting series resonant should be always used in fixed frequency at resonant frequency , as opposed to LLC
Thanks Brad, but this looks more of an open loop oscillator to me and I´d like to close the loop with a chip controller. My doubt is if I can use a standard LLC controller (there are plenty in the market) to control a series LC resonant converter, or if a MCU would be more convinient
I would like to design a series resonant converter but I´m unsure of what would be the best controller. Would a LLC resonant controller (as in UCC25600 chip from TI) work with a more simpler series resonant topology , or should I use a MCU instead (C2000 series) ?
Something that strikes me is the fact that , according to Saturn, there is an inverse relationship between cross sectional area and current density
These are values obtained for 20C rise
For 1oz, 1mm : 2.52 Ampacity -> 6970A/cm2
For 1oz, 10mm : 9.79Ampacity -> 2720A/cm2
For 1oz, 100mm ...
Thanks d123
Not sure if that answers my question though. When doing a DC Drop analysis, like in hyperlinx PI, I obtain the current density A/cm2 for the whole power plane or via array. I may have a high current density concentrated in a very specific spot, so I would like to know what is the...
Hello,
Does anyone know what is rule of thumb for maximum current density on PCB tracks (Extracted from a DC Drop Analysis) ? I know for wires is usually 500A/cm2. How do I know if a local hotspot with 2000A/cm2 or 5000A/cm2 is bad or not.
Thanks
The output voltage is variable from 100% to 10%, It can go from 400V at 12.5A to 40V at 125A and the load can also vary from 100% to 10%. I would like to prioritize efficiency. In the resonant section I was thinking LCC or LLC, need to investigate which one would more suitable. I guess from your...
Hi,
As the title says, I´m deciding on the power stage for a 5kW DC/DC application at 48Vin. I´ve always heard that a H full bridge should be used for applications above 1kW, however the push pull has the advantage of using only 2 switching elements which could potentially reduce the overall...
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