Other Parts Discussed in Thread: LM5157, TPS55340, LM5156,
I am designing a product that uses a 28V, 500mA supply for a GaN transistor based RF amplifier. This is a noise sensitive application where the ripple in the supply must be known. The LM5157X would seem a good candidate as it has the optional spread spectrum dithering to spread output ripple energy over frequency.
However, there seems to be no quantitative information in the datasheet about output voltage ripple. The closest thing to this issue is the statement "The output capacitor value can be selected based on output voltage ripple...", but, no information on output ripple as a function of this capacitance or any other parameters is given.
Is information on the output voltage ripple of the part available? If not, I will have to select another part that is specified for output ripple.
Thanks
Farron