TPS25858-Q1: TPS25858-Q1

1.what will be total output caps value for output filter.

2.it is necessary to use 1uf and 100nf  both the BUS pins 

3. as we need min 6v divider ckt for enable pin so please provide the calculation or resistor value for min 6v.

4. the  two AL-cap we are using in the ckt one in input another one in output value what about the ESR value of them ?

5.Please suggest NTC part 

6.while converting to the port c to port A what will be value of the resistor for pull -up and with which power supply we are giving pull up

7. output switching capacitor DCR Value range.

Hi,

Please refer 858 EVM for your reference.

https://www.ti.com/tool/TPS25858Q1EVM-140?keyMatch=&tisearch=search-everything&usecase=partmatches

Regards,

Ansel

Hi,

this didnt include all my queries. 

In EVM total value of output capacitor is 396uF so can i use 10uF in place of 22uf so total value be  270uF AND 3 Capacitor of 10uF so it will be 300uF. is it Ok.

in the above reply what MEI ?

For output inductor DCR we are using 4.7uH.DCR 7Mohm.

Regards,

ATUL KUMAR SINGH

Hi,

I Saw EVM ckt but my question is 300uf at output filter is enough or not.

and secondly about the DCR value of the output inductor.

Basically what is used in the EVM i aware of it bnut my question is what we are using is it enough for your solution.

My question is  270uf  i am using in place of 330uf so it is ok or you want me to not to use any 330uf or either 270uf.

 and in place of 22uf*3 i want to use 10uf*3 is it feasible. so my total value will be 270uf+10uf*3= 300uf.

can you tell me clearly what are the value required for the output filter as per EVM  we need 330uf+3*22uF= 396uf.

so please clearly tell me about this.

I know but as per our prev experience in thermal we are getting device reseted with more DCR value of the inductor so what will be enough

Hi,

In your EVM only 330uf is Recommended.