Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Urukul power #198

Closed
jordens opened this issue May 24, 2017 · 2 comments
Closed

Urukul power #198

jordens opened this issue May 24, 2017 · 2 comments
Assignees
@gkasprow
Labels
area:hardware area:urukul
Milestone
Urukul v1.0

Comments

@jordens
Copy link
Member

jordens commented May 24, 2017 •
edited
Loading

@gkasprow

  • Regarding VFB1 and VFB2 of that LTM4619EV: don't you want to tap them from the same side of the choke in both cases?
  • Are there more quiet, smaller, cheaper converters (2x2A instead of 2x4A) since we'll go for just the 4x AD9912/AD9910 and 4x 35 mA @ 7V ERA-3+ amplifiers?
@jordens jordens mentioned this issue May 24, 2017
Closed
@gkasprow
Copy link
Member

@jordens right, the feedback path should be identical.
I used this converter mainly because we use it already on Sayma RTM and it is low noise chip since all components are integrated in it. It also has high efficiency.
We could go for discrete version but they generate more EMI due to bigger physical size and have worse efficiency. We can go for 2.5A version - LTM4622 but is has lower efficiency.

@jordens
Copy link
Member Author

jordens commented May 24, 2017

OK. I'll leave it to you then.

@jordens jordens modified the milestone: Urukul 0.1 Jun 8, 2017
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@gkasprow gkasprow

Labels
area:hardware area:urukul
Projects
None yet
Milestone
Urukul v1.0
Development

No branches or pull requests
2 participants
@jordens @gkasprow