T
treez
Guest
Hello,
I was just admiring the Sanken integrated FET flyback controllers when I realised that the datasheet has insufficient information to make them actually useable. This is because the datasheet does not describe what is the value of “R(pullup)” in the controller.
As you know, “R(pullup)” is the value of pullup resistor used in the controller through which the feedback opto pulls current through in order to regulate the flyback smps. “R(pullup)” can be seen in the linked document called “Designing with the TL431”, and is called “R4” throughout this document..
Designing with the TL431:
**broken link removed**
STR-W6000S series integrated FET flyback controllers:-
http://www.semicon.sanken-ele.co.jp/sk_content/str-w605xs_ds_en.pdf
Do you know what is the value of R(pullup) for any of the STR-W6000S range of flyback smps controllers?
I was just admiring the Sanken integrated FET flyback controllers when I realised that the datasheet has insufficient information to make them actually useable. This is because the datasheet does not describe what is the value of “R(pullup)” in the controller.
As you know, “R(pullup)” is the value of pullup resistor used in the controller through which the feedback opto pulls current through in order to regulate the flyback smps. “R(pullup)” can be seen in the linked document called “Designing with the TL431”, and is called “R4” throughout this document..
Designing with the TL431:
**broken link removed**
STR-W6000S series integrated FET flyback controllers:-
http://www.semicon.sanken-ele.co.jp/sk_content/str-w605xs_ds_en.pdf
Do you know what is the value of R(pullup) for any of the STR-W6000S range of flyback smps controllers?