AC90-130V input 80V/18.75A output 1500W solution suggestion

Hello Tiger,

The UCC28180 and the UCC28070 are both boost type pfc controller so the output DC voltage will be greater than the peak of the AC input.

For a 130Vac max input you should consider using a bus voltage of about 200Vdc minimum.

For an 80V  output you will need a post regulator stage that could be an LLC or phase shifted full bridge.

The UCC28180 is an 8 pin CCM type pfc controller that can be used at 1.5kW

For example TIDA00779 is a 3.5kW reference design based on the UCC28180

The UCC28070 is a more complex part (20 pins ) that interleaves two power stages. Its advantages are that it is possible to design a lower profile power supply with more design features. For example the UCC28070 senses input voltage and this can be used to implement a brownout feature. It has a quantized multiplier that helps with fast response to line transients. It also monitors switch current and has a constant power feature.

A design based on the UCC28180 is going to cost less than a UCC28070 because it will use one power stage compared to two but it will most likely be bulkier with less features. I don't know what your application is but it sounds like the UCC28180 is more suitable for your needs. I recommend that you compare the features of both parts as shown on page 1 of the relevant data sheets.

John Griffin