Other Parts Discussed in Thread: LM3150
Hello, I have a system powered by a LM3150 circuit that outputs 7V (on a separate power board connected with cables to the main board).
Then on the main board I have to generate several voltages from this 7V input (5V, 4.2V and 3.3V) - I am planning to use TPS82130 and maybe some other similar power modules and I have a few questions:
- do I have to take care about some points regarding the switching frequency of the power modules with respect to the switcing frequency of the LM3150 ? Maybe to avoid that they are at the same frequency or a multiple of the frequency ?
- is it recommended to use the 7V input to each of the 3 power modules that will output the 3 voltages above ? Or is it maybe better to convert from 7V to 5V and then from 5V to 4.2V and to 3.3V ?
- are there some recommended practices for such a configuration with multiple voltages to avoid noise, interference and so on ?
Thank you,
Mihai