Hello,
we would like to use two (2) Step-down converter build with LM76003 in synchronous interleaved operating mode (same clock 500kHz, 180° phase shift). Some questions regarding implementation:
- According datasheet a termination resistor of 100ohm shall be used. However, this generates a lot of power disssipation. We would like to drive the SYNC input with a CMOS 3.3V logic output or sigle gate LVC logic series (3.3V) respectively. Do you have any recommendation for us regarding need and sizing of the termination resistor RTERM?
- Instead of dedicated external oscillator can we use the SW node of converter 1 (LM76003) and use it via inverter as clock source for second converter (SYNC) input.
- Do you have any reference designs, where SYNC input is used.
Thanks in advance!
Regards, Andreas N.