UC3825: How to SYNC UC3825 with UC3823 ?

Hello ,

I would like to ask how to do SYNC between UC3825 and UC3823 control ICs.

I actually used two UC3825 jumpers to connect them first. The data table below illustrates how the two units are close together.

After connecting it, I found that SLAVE will not output PWM signal.

If Vref is connected to RT at 5.1V, make sure the connection is correct.

My current circuit is in voltage mode, and P6 and P7 are connected together. But when using SYNC, is CT connected to ground correctly?

Please tell me how I should modify it or can you provide me with my circuit diagram for reference.

Thank you so much.