Hi,
From datasheet I am finding it hard to understand whether TPS566247 would be able to achieve steady state load load transient of 0.6 A to 4.5 A within 6us time? Is it possible for this converter to achieve this spec?
If no, could you please suggest me any other part that can switch between 0.6A to 4.5A within 6us?
Thank you
Tanvir
Tanvir,
For pk-pk 5mv ripple, that should be ok to achieve it, also you can use webench tool to simulate ripple data for reference.
BUT 566247 can't make 90% efficiency@5A loading(I suppose 90% is for full loading since you haven't mentioned), and If would make so high efficiency, over 10A part maybe needed. commonly high current part can achieve high efficiency at middle loading.
Another what I would like to check with you if the AC spec, lots of parts can response the load transient you mentioned, but you may know during light load to heavy load, undershoot will be generated, so we need to know the Vout AC spec during the transient response you mentioned to check if any part can be used.
Finally, since the input range in your application is <5V, I recommend you may submit a new topic with " Vin=3V, Vout=0.9V, efficiency=90%INT- High Reliability (Read-Only) Forum
Tanvir,
Per simulation result, 566247 is around 80%, I checked another higher current device 548A28 can achieve your target data, FYI.
Also you can submit a new topic with " Vin=3V, Vout=0.9V, efficiency=90% power requirement" to check with low Vin product line.
