Hi,
I'm designing a portable audio device that will operate on 9 volt batteries and I need the following voltages.
+5v @ 250mA
-5v @ 150mA
+3.3 @ 25mA
+48 @10mA
I've used the Webench design software to help me with the design of a power supply or power supplies that can meet my needs but not many of the designs actually seem to work. These voltages need to be pretty solid and low noise since the product has a very high quality low noise preamp in it but so far I've had no luck achieving this goal. I'm not a power supply engineer so I'm looking for all of the help and suggestions from you pros. Any proven designs and or tips would be greatly appreciated!
Thanks
