Design Review - ADP5071 6V to +/-14V

Question

Hi, 
 Please review the schematic if possible. I am only interested in the schematic at this time, not the layout. There are some discrepancies between the datasheet, eval board, and ADIsim tool in regards to compensation network, inductor values, and output voltage divider network resistor range. 
 1) I asked a question previously about compensation networks and was told to follow the sim tool instead of the datasheet - because it would be more accurate. Please confirm. 
 2) Is there a sweet spot for the reference current for divider networks for setting the output voltages? The datasheet and eval show the values scaled up large (Mohms). The Sim tool gives much lower values. Please advise of either is preferable. 
 3) Any other thoughts welcome!

ADIApproved · Accepted Answer

Hi Azone, 
 I checked the connections on your schematic and it looks okay. Did you get the values of your components on the simPower tool? If so, then values should be okay. In addition to this, I recommend to put provision of unpopulated resistor across the SS pin to AGND and capacitor across the comp pin. The former is for soft start adjustment, while the latter is for adjustment of the compensation. You may need them later on your actual test, but these are just optional. You may still stick with what you have on your design right now. 
 For the PCB layout, you may refer to the evaluation board of ADP5071 and the recommended layout on the datasheet. Kindly compare it with your layout and see if you missed something. Thank you. 
 Regards, 
 Fritz)

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Design Review - ADP5071 6V to +/-14V

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