On a common Alplifier Protection board
As you may know I laid out the protection board for the F5X project. What you may not have known is that I am looking to design a new version of this with a slightly different tack, this one being for a general audience and taking advantage of more integration. There are some things that are fixed and some things that are much more liquid.
I want to know what you guys think on a few issues so I can make my design better suit other people.
The following will be connected to a 128 macro-cell Coolrunner II CPLD. - A pair of DC sense amps with a 10hz cutoff, based around an In-Amp, and having an input range of +/- 30V around ground, 10% accurate. connected to window detectors
- A pair of Current sense amps connected to window detectors, +/- 30V CM, 1k averaging LP filter. reads a 0.1R<x<1R sense resistor.
- A start up delay and soft start control circuit.
- A pair of temperature sensors.
- A monostable oscillator with time 0.5s triggered by the CPLD.
- A 32k crystal oscillator
- 12 MOSFET low side switches to control relays.
- A set of 4 LED on board and an 8bit linear RGB LED driver. (max 1mA)
- A linear PSU capable of 1A at 12V to supply relays.
- 8 3v3 IO pins brought out.
What else would you suggest, or other functionality would you like. Please comment.
Last edited by ashaw; 27th January 2012 at 02:51 PM.
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27th January 2012, 02:39 PM
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