LMR14030: LMR14030SDDAR_hardware review

Hi

D12 should be 40V Schottky diode.
you need to add 4.7uF /16V ceramic cap on output for lower ripple.
What's the ESR of C26, C27? if C26 C27 ESR >50 mohm, then C25 should be open , and add one more ceramic cap parallel with R39.

Hi Andy,

Thanks for the review comments,

1. D12 : P/N B560C-13-F, is a 60V schottky diode.

2. You mean to say add 4.7uF/16V in parallel with C26 and C27?

3. C26 & C27 P/N : 16SVPC39MV and has ESR value 27mohm, 

then will keep C25 and not add one ceramic capacitor in parallel with R39.

Thanks

Manjunath

Hardware Design Engineer

Hi,

Pls change C25 from 270pF to 100pF 25V.

Hi Andy,

270pF to 100pF/25V is the only change I should do?

Hi,

If the output capacitors only have C26, C27 and one 4.7uF /16V ceramic cap, then C25 is 100pF/25V, no other change required.

Hi,
In our design, I wanted to know about soft start time of LMR14030 IC, in our design i had given 2ms, is this is a desired value ?
Kindly support on this.


Thanks
Manjunath