Greetings all,
Been lurking this newsgroup for a while and I'm rather impressed with the quality of the discussions over here so I thought I'd run a question by y'all.
I have a project where I need to upgrade an existing design. The unit is a medium frequency power converter (25-50kHz) that currently runs off two dedicated PIC micros. The new specs require for increased signal processing and thus I'm looking at all sort of design options, and quite frankly, the newbie that I am is almost feeling overwhelmed by all the options out there.
Here's an overview of what I need to accomplish.
Signal processing of a 25-50kHz signal with limited accuracy (10 bits ADC OK) for RMS, enveloppe, dI/dT and other such measurements. Rapid, real-time signal detection and processing (gate driving mostly)under 1uSec for zero crossing, peak values and anomalies. (>1.5 MSPS). SPI, CAN (optional) and USART interfaces for embedded hardware and external communications. (Ethernet a bonus but not mandatory) Basic processing for PID and other control / monitoring logic. Enough processing for FIR/IIR filters and math processing (nothing very complex though). The application is moderately cost-sensitive (