Hello,
Recently I bought the UCD9240 80-pin to adapt for an isolated three-phase inverter.
According to the first contact with the technical support, this approach can work (isolated topology) IF I get a correct feed back signal to the IC.
I also bought the USB-to-GPIO to interface the IC with the supplied GUI.
I tried to look for the EMV schematics but seems that even is not possible to get them in the IC page (just videos that are worthless), so I connect according to the UCD9240 datasheet, but still not recognizing from the USB interface the IC (as if it was not connected)
Here are the connected pins
ON IC:
pins 48,71,72 tied to ground with 10k resistor.
pins 49,13 tied to 3.3v with 10k resistor.
pins 9, 34, 55, 60, 61, 80 tied to ground.
pins 8, 56, 57, 58 tied to 3.3v.
pins 1, 59 tied to 0.1uF cap to ground.
pins 4 tied to 2v. pins 76,77 left open.
From IC to USB Interface Adapter (USB-to-GPIO):
pin 6 on USB-to-GPIO tied to ground.
pin 19 tied to pin 9 on USB-to-GPIO.
pin 20 tied to pin 10 on USB-to-GPIO.
pin 35 tied to pin 8 on USB-to-GPIO.
pin 36 tied to pin 7 on USB-to-GPIO.
Some idea what Im doing wrong??
Thank you
