(Note: I raised a support case about this, but it was closed, and requested that I ask in here). I wondered if there are any further details / anyone is aware of any issues with adding a capacitor from CS in (23) to ground (so in parallel across the external CS sense resistor), in order to prevent short-transients from causing the device to trip? There doesn't seem to be anything mentioned in the datasheet about doing this (Which is also very-vague about what amount output capacitance is necessary, and there doesn't seem to be any additional design info / spreadsheet tools that some recent competitor devices have - and which also have additional transient-suppression ability). I have found that adding a 4.7nF capacitor across the R_CS resistor value, would stop a 2.5V dip for 500us of Vout (as Vout rose above 8V into the non purely-resistive load of a commercial receiver unit), from causing the STEF12H60M to trip. Whilst increasing the output capacitance to 1500uF would also generally achieve this, there is then a large delay for this to discharge, when disabled with load removed, whilst an error condition is flagged / before Vout is low-enough for restart to be achieved. Also, increasing the Cout value much further, can also result in a trip with no-load, due to initial current surge into that, and so necessitates a much larger current-limit that is too high for the present application. And doing that still doesn't allow start-up into an electronic Constant-current etc. load (even with slowest start / slew-rate settings), for initial testing. Whereas, increasing the capacitance on the CS pin, much further (to around 10uF), has been found to allow start-up at full max load current into an electronic load - Rather than having to use Power-Rheostats, that are now virtually all obsoleted. But I was concerned that delaying the protection that much, could potentially cause failure of the device if the internal Power-MOSFET overheated, before it shut-off - Although I have tried deliberately shorting the output and not found any noticeable differences in the amount of energy in the spark from this / any noticeable thermal rise of the device from repeated attempts of this (with the device set for a just under 10A current-limit, and a 20A PSU limit, at least). So I wanted to check for any potential problems with adding this much capacitance? - In practice, the device should not normally trip and if it does it would most likely be due to a permanent non-recoverable fault with the load, so we'd have to repair the whole unit it was in. TIA, Owen
