ShmoeMo Posted October 7, 2019 Share Posted October 7, 2019 (edited) Hey guys. A little bit ago now i cut the vrm of a DCUII 780 and verified it had no shorts and since then i have been unable to get it to power up. I have supplied the chip with 3.3 volts for VCC, EN, and PSI yet i cannot get it to output properly. It will output 3 oddvolts on the main vrm (which aint right) but has no current capability. An 8 ohm load will drop it to basically nothing. The main VC is an ASP 1212, linked below. Is there a sense line or another enable line somewhere i need to hit with 3.3 volts? I have attached a picture of what i have so far.https://www.infineon.com/dgdl/pb-asp1212.pdf?fileId=5546d462533600a40153567f4b2128a4 Edited October 7, 2019 by (PTP) ShmoeMo Quote Link to comment Share on other sites More sharing options...
TerraRaptor Posted October 7, 2019 Share Posted October 7, 2019 Probably vid should be set - as I remember some VRMs are set off if Vid is all 0 or 1. Quote Link to comment Share on other sites More sharing options...
ShmoeMo Posted October 7, 2019 Author Share Posted October 7, 2019 2 hours ago, TerraRaptor said: Probably vid should be set - as I remember some VRMs are set off if Vid is all 0 or 1. If it was set to "off" would that explain the funky voltage with no current capability on my output? Will have a look at setting the VID tommorrow Quote Link to comment Share on other sites More sharing options...
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