EEVblog Electronics Community Forum
Electronics => Projects, Designs, and Technical Stuff => Topic started by: Houseman on November 15, 2022, 11:37:20 am
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Hi forum.
For a mixed signal device (analog part and digital part) I need to have multiple rails in order to make the device function properly.
I need in order:
-36V and +36V for analog output circuit (max current 500mA)
-24V +12V for the DAC part (100mA)
5V references, 3.3V reference, 2.5V reference. (for the DAC and digital part MCU, TFT display)
The goal is to power the device from 5V USB port (or even USB-C device) but at the moment DC power is not a problem.
It can be connected also via mains and a 12V trasformer.
The main requisite is obviously the lowest noise possible expecially in the DAC part and the analog output circuit part. No specs have been given so far, but the challenge is that so many switcher can contribute to global noise. I know it sounds a little blurry but I am newbie to this topic and a little bit confused about what to keep in mind in a so vaste plateau of switching power supply choice from main electronic manifacturers..
Any help or any book to read or take example from would be very helpful expecially in the -+36V part. I have tried the selection table in power management of Analog Devices but I understand taking main design kit and adapting them is not a great way to follow.
Best regards
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Bonjourno Senior,
Please préciser the requirements
quantity per run, per year? Compliant with IEC, EU, US EMI? Max size available?
I suggest that you create a specification and RFQ, send to power supply and power module manufacturers rather than DIY
Ciao,
Jon
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Bonjour.
And thanks.
Yes compilant IEC and EU EMI. Size does not matter.
By the way I have found a powerful tool of TI called Webench.
It gives me at least the power to view different topology and run simulations for output performances.
Best regards and thanks.