Hi,
I am planning to use UCD9090A on my board, mainly for sequencing and monitoring the switching regulators. All the regulators will be
used in CLK mode, where the clock is generated by an FPGA. I have seen, that UCD9090A has programmable PWM outputs,
which could be used for this purpose and as it would be "always on", I don't have to worry about the overshoot on the rail caused
by switching back to RT mode, when the FPGA looses its image.
In our application it is important to keep the switching noise at a well defined frequency (eg. 625 kHz), but the only data I found about
the internal oscillator frequency was 250 MHz +/- 10 MHz.
Does that mean the frequency can vary +/-10 MHz from device to device? Do you have a figure regarding to frequency versus temperature?
Thank you for your answer in advance.
Best regards,
Peter
