Other Parts Discussed in Thread: LM10010, TPS62136
Hi all,
I have a requirement for an adjustable core supply voltage for a SoC. The core supply voltage will be controlled by an external microcontroller from about 0.9V to 1.1V. Crucially, the product has limited board area available so we would prefer an integrated solution.
I found the LM10500 which seems to be ideal for this application, and it supports PowerWise Interface.
However, I cannot find any documentation on this protocol, other than it predating the National-TI merger and having the support of ARM. Since we are not using a SoC that natively supports PWI, we need to implement the protocol in software. The best documentation I found was a bit-banged protocol implementation, which would be a good resource if we could also compare it against a protocol spec. The National pages and pwistandard.org are down. But archive.org shows there was never any documentation at pwistandard.org - how odd!
The secondary issue a member of the engineering team raised was that given the age of this device and the relative dearth of PWI capable TI power management ICs, is this a long-term solution (5+ years) or would TI be expecting to NRND this part in the near future. If so, is there an alternative part we could use.
Kind regards
Tom Oldbury, Snr Engineer Thermoteknix Systems Ltd.