Team,
we are evaluating 'TPS61099EVM-768' and experienced an unwanted feature. As per the calculation mentioned in the datasheet, the coil WE 74404024010 (1uH, Saturation current 2.6A) should be switched with around 280KHz (Uin = 2V; Uout = 3V), but it is getting a switching frequency of around 930KHz.
Hence, we need to know few things about the evaluation board:
1. Whether there are some undocumented changes in the EVM design or not.
2. We considered efficiency of 92% - is it reasonable?
3. We biased the Feedback with 1V. Does it need to be provided with some other bias?
Thanks for your help,
TI Customer