We downloaded the code of this URL（www.ti.com/tool/ucd3138fw-psfb）to UCD3138.
This code is used to trial manufacture a DC - DC converter.
When starting at normal temperature (20 ℃), output voltage is output normally.(Figure 1_Pink Line)
However, in the -20 ° C condition, abnormality is seen in the waveform of the output voltage. (Figure 2_Green Line)
Figure1. Normal Temperature
Figure2. -20℃
Due to the specification of UCD 3138, there should be no problem even at -20 ° C, but it seems that the waveform at -20 ° C is controlled by software of protect.
Do you think this is a problem inside the IC, or outside the IC?
Best regards.
