I’m sure this is answered somewhere but I’m unable to find it atm.
Is the input of the voltage divider connected to Vin or to the output of D1?
Output of D1 would mean voltage monitoring with the Zener mod is not usable because the max input of the divider is the Zener voltage?
Reading the datasheet, vF is about double the vF of the NSR0320. On the other hand its half the price.
Looks appropriate to me.
Sorry for highjacking this thread:
I’m currently fighting one(now 3 of these drivers) to get them running at >4V input.
Maybe some of you can take a look? A17DD Driver does not switch modes
It matches the Vf of a diode that wight recommended but at 1/3 the cost. It sounds high, but it’s in the lower Vf range of the diodes mouser has for sale.
With 3.67V on the driver input (while running) I measured 3.51V at the FET gate full on. At 2.99V I measured 2.833V. This is with the "ultra low vF" diode. It was pretty consistent at around 0.16V difference from input voltage to gate voltage. I need to swap in one of the cheap S4 diodes from the 105Cs and see what kind of drop I get from that.
Hi, these days I tried to study about A17DD-SO8. I find single side design a great feauture. I have some questions though.
How much is cost of this board, compared with classic 17mm fet blf fet driver? Except it’s single side design, does this board have advantages compared with blf fet?
The cost is pretty much equivalent. It is easier to build and fits in more lights. The performance is equivalent.
Finges: there was already a specific zener mod FET driver. You could also easily modify the earlier revisions as well (but not the v1.0 versions without some modification).
I don’t do Windows. I was looking at cheap Windows laptops to program drivers and wondering what are the minimum requirements to program these and other boards. If you guys could suggest what is needed that would be a big help, thanks.
It wouldn’t take much at all, a $50 (used) netbook could probably manage it. They are very simple programs. Most of the tutorials are for windows, but a few people here do it in linux as well. That could be a cheaper option.
I don’t do Windows either. You can flash stuff from Linux if you like, and I have instructions available for setting it up in Ubuntu. You should be able to run it on pretty much any computer with USB, though on older ones you may need a lightweight version like Xubuntu.