Some years ago I started work in a company who were shipping a product which contained an SMPS which would charge up its vout to a certain voltage within 1 second. This was a necessary spec’d selling point. I was required to do some work on the product, checking its Test report for a start.
However, the SMPS in it was “open loop”, and the tolerance of the current limit they were relying upon within the controller might sometimes mean it taking 1.4 seconds to charge up…depending on chip-batch tolerance. However, such loosely toleranced parts had never, so far, entered any production batch.
I put forward a very minor mod that would solve the issue, but was told no. They didn’t want a change, as it would be like an admission of having made an error. I was told to just keep schtum….that the wide tolerance parts would never come into production, and even if they did, it would not be my issue.
Has this happened to you? You find a fault. On a board you have been working on..and so may be deemed an “involved party”. You request a solving mod…No is the reply (from your immediate boss, not the company owner) …what did you then do?