The capacitors are only bypass, required by the datasheets of the audio amplifiers. The output of the audio amplifiers is going to high impedance (in practice they work as preamplifiers, there is another board that handles the power amplifiers).The TMR6-0523 can only deliver 200mA. You do not say what your 'lot of audio amplifiers' consist of, do they draw any additional start-up current to charge capacitors?
* A low ohmic resistor (1 Ohm or less)without the resistors I am not sure how to do that. What do you suggest?
Hi,
* A low ohmic resistor (1 Ohm or less)
* a current probe
* a current transducer (LEM)
...
Klaus
Hi,
When I see it correctly, then on the first picture the current peaks twice to 500mA.
This may be too high.
May we see all the circuit driven by the DCDC converter?
Klaus
Hi,
I' d rather expect 100mA than 75mA steady current.
When you connect load it may be more.
What about the input voltage to the TMR .. is it stable during start up?
Klaus
(Note: "FROM ADC" should be "FROM DAC", isn´t it?)
***
BTW: do you want it to be high quality audio?
Klaus
I start thinking that this model of DC converter is not reliable.Hi,
[...]
Since all happens at ther very beginning of power up, when your 5V is not really stable yet.
You could also use the REMOTE input of the TMR: let the input voltage stabilize, then enable the TMR. This may or may not help. But maybe worth a try.
Klaus
...means "guessing". I agree. But you don´t need to guess.I start thinking that this model of DC converter is not reliable.
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