LM26480 Differences between Buck1 and Buck2

Hi Eric

Can you be more specific about what aspect concerns you. Is a section in the datasheet or the performance of the application?

Regards

Peter

Hi Peter,

Thanks for your reply.

To be more specific:

In my application I have SW1 at 3V3 and SW2 at 1V2. 

If we check on datasheet at pag. 22-23 there is a table showing the recommended Vout suitable ranges for SW1,2.The easiest way to put ctm in a comfort zone is swap the loads of SW1 and SW2. For a new PCB revision we will switch the loads, but at this moment we have to start a series production with the "wrong" loads. 

Reading the datasheet, I can't see the differences between the two switches except the POR function with different delays. But we are not using the POR signal in our application now.

My question is about the long term durability/perfomance of our application with these "wrong"loads for SW1 and SW2. We do not want to get failures or product call back. Could you please check?

Thanks in advance.

Eric

Hi Eric,

What are the min and max loads on the SW1 and SW2.

Thanks

Peter

Hi Peter,

Device has 2 states:

1. Device switced ON:

   SW1: 3V3@290mA  to 390mA

   SW2: 1.2V@270mA to 315mA

2. Device charging:

   SW1: 3V3@180mA 

   SW2: OFF

I hope this info will be a help. Thanks

Eric

Hi Eric,

I cant see a problem with what you have done, but I will check with the designers to make sure its ok.

Regards

Peter

Hi Eric,

I have moved your question into the non-isolated DC/dc forum where one of their team will pick it up from here.

Regards

Peter