Tool/software:
Hi All,
Greetings!
I`m using IC 'UC-1901J' as an error amplifier. However, I wish to monitor the generated square waveform at output pin on Driver A & Driver B. I have set the carrier frequency 1 MHz by choosing the Rt=1kOhm & Ct= 1nF.
Other test conditions are
Vin = 20V (This voltage slowly increased to 20 V)
The same 20V was resistor divided & applied (1.5V) to Inverting pin of IC
Non-Inverting pin is shorted to Vref pin
A feedback resistor of 100KOhm is connected between COMP & INV pin with a series resistor of 10KOhm connected in between output voltage divider (1.5V) & INV PIN; setting the differential gain 20dB.
No load is connected to Driver A & Driver B pin of the IC (Not even magnetic feedback).
So, with all above mentioned conditions I couldn`t observed any voltage waveform on Driver A & Driver B (Differential voltage) pins while I varied the Vin/output voltage from 0 to 20 V.
Kindly share your valuable opinion why there is no waveform; Is it because I didn`t apply any load (magnetic feedback or peak detector) on Driver A & Driver B pins?
Best Regards,
Ankit Singh
