Buck Converter with Output Clock

Thnx for your help John.

I'm reasonably sure there may be others. Those are just 2 that come immediately to mind. Maybe someone else will contribute other ideas.

I can't find 3 output buck converter with Clock Output pin. TPS65400 have clock output but its 4 regulated output buck.

Hi John,

I just find out that both converter you suggested is synchronizable to external clock but it don't have clock output pin. The converter can't be master to generated clock for other converter IC.

Zul Fikri

You have to read the datasheet carefully. TPS54350 and TPS54550 do have clock output capability. There are two pins RT and SYNC. SYNC can be either an input or an output, depending on the state or RT pin. If RT is connected directly to AGND, then SYNC outputs a 250 kHz clock. If RT is open (floating), SYNC outputs a 500 kHz clock. If RT is terminated to GND with a resistor, the resistor sets the switching frequency and SYNC is configured as an input. So far master clock output, the switching frequency must be 250 or 500 kHz.

My mistake. Thanks john for correcting me.