Hello Ryan,
Have a look at this reference design: https://www.ti.com/tool/PMP7979
The problem you will face in reality with LM5156 is that the external diode will have difficulties to handle the power, so it is recommended to go with a synchronous…
Julian,
While the RDson of the FET is low the total gate charge is huge (146nC). Switching at 540kHz with the FET will not work and will cause the gate driver supply of TPS43061 to run into current limit. Not the mention the switching losses are going…
Hi NObody,
I would recommend using the LM5122. There are two major reasons.
1. Total power level is 540W and a multi-phase design will help with component selection. The LM5122 can be easily configured for 2 phase operation. Please note that for…
Hi Gerhard,
This design needs to supply 3 A continuous, correct?
I would call this more of a corner case design and WEBENCH does not always handle these the best so some hand calculations are needed. For this example a very high amount of input current…
Typically 100W / channel is considered a good design guideline, especially at high boost ratios (48V/11V). I am thinking that is why you won't see a single phase design generated by automated tools. It is a power stage limitation, not necessarily a control…
Hi CHO SR,
Thank you for considering TI solutions. Could you clarify what is exactly the issue? The Webench cannot create the design, or cannot simulate, or your customer has a hardware circuit which does not produce Vout?
Regarding your spec below…
