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Thanks.
I used 1.8M Ohms for the low side resistor, and 10M Ohms for the high side resistor to achieve the desired voltage divider ratio. I thought the larger the resistor value the better (less power consumption of the voltage divider).
Thanks for your reply.
Sorry for the confusion. Originally, what I did was implementing a simple voltage divider with two resistors without the ceramic cap. I added a cap in parallel (not in sereies) with the input of the ADC just to see if this helps. But it did not. Any idea?
Hi All,
I am designing a digitally controlled boost converter. I have trouble with the voltage divider used to scale down the output voltage to fit the input range of the on-chip ADC of the Microcontroller (TMS320F28335) from TI. I noticed that the voltage divider ratio was at desired value...
I got a question regarding where the energy is stored in the inductor.
The inductor, for example in the buck converter, has a DC current and AC current in the steady state. My understanding is that the energy corresponding to the DC current is stored as magnetic field in the air gap and the...
Thanks, wky!
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FvM, I am assuming ux in your equation is the voltage across the xth winding, this equation does make sense. But you also said in your previous reply that self-inductance of a winding = magnetizing inductance/mutual...
FvM! I got it better, but still not fully get it. Can you recommend to me some transformer related documents that might be helpful? I checked some documents the last few days but they sometimes contradict each other in terms of the contents, I have been struggling with the transformer issues for...
Thanks, FvM, it helps!
Based on your answer, I got a few more questions:
(1) If an ideal transformer does't deal with magnetic fields, can I just see the two windings as a voltage gain? like a dependent voltage source with a gain equal to the turns ratio. And the self-inductance of the two...
Transformer issues
I got two questions that need your help,
(1) For an ideal transformer, which does not consist of leakage inductance, magnetizing inductance, core loss resistance, etc., its primary winding is connected to an AC source while the secondary winding is unloaded, theoretically...
That is great, I would also do that next time. I am attaching my newest layout below, let me know if you have any advice regarding the placement of the components. Note that for this layout, the ringing of the output during switching is much smaller, less than 100mV, but since my following...
I have read some snubber design stuff before but I think considering my desired power rating which is 8V input and 4V output, there would be no need to add additional snubber circuits. But after trying four boards with various versions of layout and combination of components, I started to...
Hi, I modified the layout but used the same components as the previous board, the waveform of which was shown in my first post. Now, I am attaching the new waveform below, the red trace is the high gate signal, the blue trace is the low gate signal, the yellow trace is the output voltage while...
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