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Hi All,
This is a really simple question about correct power hook up between an HP 6227B power supply and the TPA6120A2RGY EVM.
The module wants V+ and GND as well as V- and GND.
My HP bench supply has two identical power supplies 0-20VDC. (Set to 15V)
They are labeled V+, V- and GND for each side.
There is voltage across V+ and V-, but not from either to GND.
Do I hook up V- from the supply to V- on the eval module and the same with V+, which is the only way to get voltage to the PCB?
What is done with the GND on the power supply?
If I connect it this way, the PCB will tie the V- to the V+ (goes to GND pin) of the two supply rails through the PCB GND lines, which are tied together.
Brian
Hi Brian,
Welcome to e2e
I don't fully understand your situation. There is no voltage from V+ or V- to GND but there is voltage between V+ and V-?
Perhaps you could connect your supplies as follows:
I hope this helps. Please let me know if this is what you were looking for.
Best regards,
-Ivan Salazar
Texas Instruments
