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Hi
I have not gone through the entire datasheet of this LLC controller but I think there should be different levels of OCP (Over Current Protection). With TI LLC controller that I have been using, there are different levels.
I think they are referring to is OCP level-1 which probably is RMS over...
Hi
This should definitely have to do with fringing losses in solid copper conductor. Two smaller gaps of length L each, will have lower heating effect on solid conductor than a single gap with length 2L.
Regards
Mrinal
Hi
I had bought around 20K units of Al200 gapped PQ2625 cores form TDK twice and they delivered one gapped and one un-gapped core pair. I asked the distributor about gap configuration but he said that for some AL values it is both gap and for some it is single gap and that we can not be sure...
Hello everyone
What I understand is that a fully charged flooded lead acid battery measures 12.6V.
But different sources mention different charging voltages, such as 13.6V or even as high as 14.6V.
Especially for automobile batteries, multiple sources say that the alternator voltage should be...
Hello
I was wondering what will be a better placement for the current shunt resistor between the two diagrams shown below.
- Gate drivers and all other analogue sub-parts are ground referenced.
Thank you
Thanks for the reply.
Can we have 0603 size components and typical TQFP packages on the bottom side and have it wave soldered? Will it not cause bridging in the TQFP packages?
Hi
We need to assemble 65W laptop chargers for small to mid volume production (around 1000 units per month). The PCB has both SMD and through hole components. SMD on the bottom layer and through hole on the top layer. I was wondering what is the standard method for assembling through hole and...
I found out the problem.
Majority of the loss is coming from high amount of ripple current circulating between the decoupling capacitors and the cable inductance of power cable connecting 12V source to the PCB. (Measured 1.5uH using LCR meter)
Strategic placement of capacitors on the PCB...
Hi
Thanks for the replies. The resistor inductance measured on LCR meter is 500nH. I think it is a probe issue because the ringing disappears with a differential probe.
Hi thanks everyone for the reply.
After all the suggestions, I tried to see the effect of probing. In the protos of the previous post VDS was measured using a HV differential probe and inductor current using a normal passive probe.
I made three measurements:
1. Measure current with differential...
Hi
I have a tied an RL load to a 12V H-Bridge operating in a usual fashion where alternate FETs are ON followed by a large dead time where all FETs are OFF and then the adjacent pair of FETs are turned ON and the cycle repeats.
L = 32uH wound on gapped ferrite core.
R = 0.25 Ohm
To sense the...
Hi
I am testing a 12V full bridge converter connected to a step up transformer. The output of the transformer is rectified using a SiC bridge diode. There's no inductor between the SiC output and the bulk capacitor.
The transformer is being driven by simple PWM. Alternate high and low FETs are...
Hi, thanks for the reply.
I understand that RMS is what we should be talking about instead of average, but I think the error of approx 300% to 400% is too large to depend on RMS or average especially as the duty cycle approaches 100%.
- The current magnitude is different for different snapshots...
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