Application note 51 example
Hello
In an51 there is a reference on page 28 (300 watt pc main + standby) to "existing 300 watt power supply" . Could you pls tell me what real example it is?
Next thing page 32 L4 is described by 2 values 84.5uH and 14.7uH I assume second one refers to LMAIN_ACTUAL what about 84.5?
Last but not least: any suggestion for supervisor circuit for atx supply?
Many thx
M
Comments
OK thanks a lot for your help.
In the attachment there is part of PXLs spreadsheet for TFS (5V - main, 12V -second, 3.3V -via megamp, -12V ) with parameters I'd like to confirm:
1) Is NMAIN_INDUCTOR refers to number of turns for 5V?, NOUT2_INDUCTOR to number of turns for 12V and NOUT4_INDUCTOR for -12V?
2) What does LMAIN_ACTUAL, LMAIN_0bias, LOUT2 refers to? And how to calculate "real inductor" based on this values? "real" means the one which is placed on schematic like AN51 page 32 L4=84.5uH
Again on your example from AN51 there is L4=84.5uH (page 32) what is this value referring to? - LMAIN_ACTUAL, LMAIN_obias, LOUT2 and how to measure its inductance (pin to pin or...)? I'd like to send request to my provider so I need to know how to instruct him.
Many thanks,
M.
OK thanks a lot for your help.
In the attachment there is part of PXLs spreadsheet for TFS (5V - main, 12V -second, 3.3V -via megamp, -12V ) with parameters I'd like to confirm:
1) Is NMAIN_INDUCTOR refers to number of turns for 5V?, NOUT2_INDUCTOR to number of turns for 12V and NOUT4_INDUCTOR for -12V?
2) What does LMAIN_ACTUAL, LMAIN_0bias, LOUT2 refers to? And how to calculate "real inductor" based on this values? "real" means the one which is placed on schematic like AN51 page 32 L4=84.5uH
Again on your example from AN51 there is L4=84.5uH (page 32) what is this value referring to? - LMAIN_ACTUAL, LMAIN_obias, LOUT2 and how to measure its inductance (pin to pin or...)? I'd like to send request to my provider so I need to know how to instruct him.
Many thanks,
M.
The "existing 300 watt power supply" is from a customer for retrofit work by using HiperTFS at primary side and you can use any generic ATX PC power supply for retrofit.
The second L4 14.7 should be L5 and should be located by the coupled inductor for 5V output.
Normally, customers provided us the supervisory circuit. We need remote on signal from it.