UCC28060: test mode

Hello user5800825, 

This information is not available, however, special test mode are often used during automatic testing of the IC to measure or trim an internal parameter, or program a function.

In normal use of the UCC28060, it is expected that the voltage applied to HVSEN will be > 0.8V.  

Regards,
Ulrich

異常試験時の挙動を調査しています。UCC28060を使用する回路で、通常動作時にHVSENとAGNDが短絡するとどうなるのか知りたいです。

Hello,

Please describe the abnormal behaviors that you are encountered. 

Dropping HVSEN below 0.8 V puts the UCC28060 into a special test mode, used only for factory testing. It will not cause harm to the pin, but functionality change to the IC is not disclosed. Please do not attempt to interrogate the IC in this mode as the functionality cannot be guaranteed.

Best, 

Could you tell me what kind of symptoms would appear if R19 were to short and fail during operation on the evaluation board UCC28060EVM? The input is AC 115V, and the output is 300W.

Please give us some time to look into this.