Hello,
I am trying to configure two separate LTM4632s in parallel (configured as VDDQ + VTT) as shown in Figure 22, but instead of tying the SYMC/MODE pins to a phasing chip, I have them tied to their respective INTVCCs to put them in burst mode.
I am wondering if there is any reason this configuration would not work? At load loads, it does appear as one might expect in DCM, but at higher loads (like 5A total on VDDQ, for example), I start to see some sort of very low amplitude (5mVpp) oscillation with a frequency in the 10s of kHz range. This ripple is the same magnitude of the actual switching ripple, so it's not a major issue, however, I wanted to ask to make sure this configuration doesn't have any known issues that might show up at other operating points across input voltage, output current, and temperature.
Thanks,
Nino
