Hi,
I just used the WEBENCH for a regulator design(from 36-12V, chose suggest chip LM46002) to support my amplifier(TPA3116). And got some problems when combine these two circuits together.
Here are the lists of things I checked which works fine:
1. With no load, the output voltage of regulator is around 12V
2. With load of resistance, output voltage also around 12V
3. Not use regulator, just use 12V directly from constant volatage source. Apply on amplifier, the amplifier part works fine
However,
when I use the output from regulator to support my amplifier circuit, the voltage between regulator output (amplifier input) drop to around 5.5V.
I am so wondering why this thing happen. Just change the load from resistance to amplifier typical application circuit, why this happen?
Here is the regulator circuit:
Thank you in advance.