{* siteName *}
By clicking "Create Account", you confirm that you accept our terms of service and have read and understand privacy policy.
{* /registrationForm *}
Hey Loren, nice post -yea the first pass at getting Cf=0.175pF seemed a low.
I am guessing the reason the original calculation for Cf was too low was the unity gain closed loop bandwidth of 1.8GHz was used in Eq. 2 where that should have been the GBP, more like 900MHz - Eq. 1 is implicitly solving to place the feedback pole at Fo. that will give a Q=1 and likely the final Cf shown was slightly increased to empirically reduce the peaking (1.25dB) from that condition.
I touched on these issues a bit in a new blog showing up on PLanet Analog, Feb. 3, 2019.
In such things as laboratory power supplies or electronic systems, in which various components are connected to longer cables, the regulated voltage is not always particularly accurate at the point where it is needed due to various voltage drops across the interconnection lines.
There area plethora of USB Type-C articles out there, but this is the first one I have seen with a really neat design architecture to shrink the board footprint with a high level of integration.
The required selectivity of a customer design implied four-pole filters with about 10% bandwidth (passband width about 10% of the centre frequency). There was a catch---a tight power budget
To save this item to your list of favorite Planet Analog content so you can find it later in your Profile page, click the "Save It" button next to the item.
If you found this interesting or useful, please use the links to the services below to share it with other readers. You will need a free account with each service to share an item via that service.
Tweet This
