Sounds like some good changes. The last time I had looked getting a 12bit AC with 6 or more channels in a single package cost more than using two 4 channel devices. But with the one you found the 11614 you get 8 channels for about the same price as two 4 channel 11612 devices. That makes it dealers choice to use two small ones that can be placed closer to their signal sources, or a single bigger one save a little board space.
1.21Gigawatts, I still don’t fully understand the mixing of the voltage control portion with the current control portion of the regulator drive. You said that there are other ways to do this. I was wondering if running both drive voltages into a single summing junction with diodes so that the one with the lower drive voltage would control the output drive voltage (higher if an inverting stage). That way they would operate symmetrically. If that approach works at all. It would need the non-regulating channel to go high so that it would not interfere with the other side. I guess that you would have to combine the anodes to the summing junction and cathodes to each drive voltage so that the one going high will be reverse biased and be isolated while the lower one will pull down the op amp input and set the drive level and output voltage of the regulator. Would a 100K resistor from Vin to the summing junction to keep it from floating lower value than the voltage/current limited drive signal be necessary?And there would still have a diode drop shifting things a bit. This would be so much easier in digital where a single compare statement and pick which one to send to the PWM or DAC output .
To keep piling bells and whistles on, you already have VFeedback and IFeedback, you can have the micro compare them to see which is in control and indicate on the LCD which mode the power supply is in. There may be some cases that you want to stop the moment it switches to current limit and having that on the display could be helpful.