TPS57112C-Q1: Is there any problem if using fsw=2012 [kHz] by using RT=82 [kohm]?

Hello Ochi-san,

Setting the device outside the suggested operating conditions (ex. Fsw > 2MHz) can potentially result to a higher Vout when the IC actual Ton is higher than desired value. 

What is the maximim Vin and Vout conditions? And customer's motivation of setting the Fsw to 2012kHz?

Best regards,

Excel

Hi Excel, 

Thnak you for response. I understood recommended operating conditon Fsw is limited by Ton_minimum; Vout may higher than desired one if Vin is too high or on duty is too low. 

Do you have the worst case Minimum on-time spec? I want to confirm it will work or not on customer use case.

Regards,
Ochi

Hello Ochi-san,

The device was transferred from MV to LV team few years ago and unfortunately, no existing data on the maximum Ton-min specs. How critical for customer application to set the Fsw to 2012kHz instead of 2000kHz?

Best regards,

Excel 

Hello Ochi-san,

There is no data on the maximum Ton-min. How critical is it to set the Fsw to 2012kHz instead of 2000kHz in the customer application?
Is the customer willing to use newer parts that suit better for their application?

Best regards,

Excel