[sdiy] From a commercial standpoint -- has Eurorack "won"?

[rsdio at audiobanshee.com]

On May 2, 2016, at 10:43 PM, Vladimir Pantelic <vladoman at gmail.com> wrote:
> On 03.05.2016 06:42, rsdio at audiobanshee.com wrote:
>> Some supply chips have a "power good" output and "enable" inputs. I
>> suppose that a mirrored negative supply could feed its "power good"
>> output into the "enable" input of the positive supply, but that seems
>> like it would create a chicken-and-egg problem. Which supply starts
>> up first? If they both shut down when the other one fails, then how
>> does the pair ever get started?
> 
> nothing a microcontroller and some clever software could not handle :)

There's a good reason why you don't see micro controllers in professional power supply designs. The "feedback" is not fast enough or precise enough. There are certainly bench supplies with an MCU to set the desired voltage, but the actual regulation feedback occurs in the analog domain.

However, you could use logic gates and analog processing like comparators - that's done all the time in power supply chip designs.

Brian Willoughby
Sound Consulting