I am designing a controller circuit for an automotive cooling fan that uses PWM and an Attiny 85 controlling a auips6011, the fan draws about 16 amps continuous load. I already have a circuit for the power supply to filter noise. an opto isolator circuit isn't needed since the data sheet states there is sufficient isolation from noise and voltage built-in.
let me mention that I already have some experience in electronics and designing circuits so most of this stuff is basic to me. I'm not to0 confident with this new device however. my biggest concern is the current limit. it states this device is capable of 60 amps of current. when I look at the leads however they do not look very thick and I kind of doubt they could carry 60 amps at 12-15 volts.
here is the data sheet for that http://www.irf.com/product-info/datasheets/data/auips6011.pdf
I am curious as to how I am supposed to use this device in my circuit other then the obvious. I'm assuming since there isn't any example circuit or mention of needed external components I'd set it up like so.
GND to PIN 1 on AUIPS6011 (Gnd)
ATTiny85 PIN 3------------------------------------ Pin 2 on AUIPS6011 (In)
- 13.3 Volts Average from vehicle power-------- Pin 3 on AUIPS6011 (Vcc)
ATTiny85 Input---------------------------------- Pin 4 on AUIPS6011 (Diagnostic)
Pin 5 on AUIPS6011 (Out)------------------------Fan Positive lead.
Fan Negative lead to ground.
ATtiny85 gnd pin to ground.
pull-up resistor may be needed across the Out pin 5 and Vcc pin 3 according to DS.
will this think really hold up to 60 amps? will it work well with PWM? and what would be the best way to read the diagnostic pin signals with the arduino?
I have 2 of these, i guess I could sacrifice one but they aren't as cheap as some other chips. I'd rather have it work the first time around.
no code for this yet as I haven't gotten to that stage yet.
you can refrain from stating the obvious stuff including comments about vehicle power noise, Heatsinking, and how to connect the grounds. i got that handled, 