Hi Phil,
Sorry to hear that you are running into supply chain issues. LM51xx series is the next generation version of the LM34xx series, so you will be undergoing a downgrade in features. If you are using a non-synchronous design, then the converter will…
Hi Tess,
You can control the output voltage by sourcing a current into the FB node via a resistor. If you inject current, the output voltage will drop to account for the additional current. If you sink current, output voltage will rise.
You can do this…
Ah, just noticed that you have synchronous there in parens.
This TI design might help to understand the drive circuit of the boost side circuit.
www.ti.com/.../PMP10538
Feel free to ask more questions as needed.
Best regards,
John