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Connecting the CT pin to ground GND turns it off the oscillator and the lower MOSFET will remain ON. Therefore, the bootstrap capacitor remains charged and the circuit can restart immediately. This method is suitable when using the inverter just a DC filter capacitor connected to the supply...

The "specialist" from Phonic did not carefully study the PDF and the functional diagram of the IR2153. The correct scheme is with the primary connected to the electrical ground.

The IR2153 is designed to work with the load connected to the minus side of the power supply, not 1/2Vdc.

This is how I feed the IR2153 without heating anything.

Ready oscillograms.

I put the resistors in the overcurrent protection. We found that the frequency increased to 42Khz. When the voltage drops on the resistance at the bottom MOSFET source, the frequency decreases. I put a load resistance that passed a current of 8.23 amps. The output voltage dropped from 80 volts...

I made a SMPS with IR2161. I have a sample wiring, the project is not finalized and is in the measurement phase. I am unhappy with the fixed frequency that is real about 27Khz at my integrated. I used IR2161 SMD. I wait for 0.1 ohm and 2W resistors to put about 5 pieces in parallel on the...