LM22674: Low Current Power Supply Design

Hi,

Good Day. I have a customer who is working with LM22674. Please see below his query for your reference. Thank you very much.

I'm working on a low current power supply design. I need simple and efficient.

Using WebBench, trying a few different chips.

My current design that has been in production for years uses a LM22674.

I need efficiency around 100mA. This supply doesn't do very well. What can I do to make it better?

I've tried the TPS5450 but get similar results on WebBench.

Best Regards,

Ray Vincent