TIDA-010038: TIDA-010038 CC/CV compensation reference design for power regulation

Hi Experts, 

My costomer wants a power reglator by LLC topology.

I am useing the UCC256404 LLC controller.

Target is  trying to get output from 0V to 150VDC enable to achieve the CC/CV design.

I want to ask about  the TIDA-010038 ,how wide output range of this reference design ?

I had check the LLC gain curve,It seems ZVS region gain is not low enough to get 0V output.

Will I have chance by the same compensation way as TIDA-010038 to achieve my goal?

If the loop compensation is not work,

I am thinking two way,please tell me which is possible or not.

1.I saw ZCS region gain curve is low enough to achieve my gaol ,regardless the poor efficency is that so bad to get in ZCS?

    or even will the UCC256404 stop me to leave ZVS region?

2.Can i useing the burst mode function to let output pulse act like the pwm output

    and smoothern it by a filter to achieve low output voltage? 

I know the UCC256404 is not for CC design,but please give me some advice,