We are facing a problem in our appplication related with freeweeling schotty diode.
It is a LM25010MH application delivering 100mA 14V with Vin=33Vdc
If we use SS26 SMA schottky from MCC the application is starting up correctly and working properly.
if we use the SS26 SMB schottky from vishay at stat up the Vout is Blocket at 6V.
in the datasheet I have found only this indication "D1: A Schottky diode is recommended. Ultra-fast recovery
diodes are not recommended as the high speed transitions
at the SW pin may inadvertently affect the IC’s operation
through external or internal EMI. "
How do you explain strange behaviour of LM25010?
It could be the total capacitance of the diode?
There is something related with layout for this?
Thank you in advance
Luber
