TPS65261-1: Minimum duty

Hi team.

Customer did test as the below.

1. Initial condition

• Input voltage : 12V
• output voltage : 0.85V(no Load)

2. Test content

1. Duty check(@13.2 Vin) : 9.2%
2. Increase input voltate (15.6Vin) -> Onput voltate increase 0.93V
3. Increase input voltate (16.5Vin) -> Occur switch hunting

Customer asked two question as the below.

1. Minimum duty of TPS65216-1 .

2. Recommend solution about problem that output voltage increase and switching hunting when input voltage rise.

Please check and reply.

Thank you.