Asynchronous step-down DC/DC

Once the mains power supply has been efficiently converted from AC to DC, industrial systems often require further DC/DC conversion to procedure the right sub-system supply voltage. This can be as low as 1.2 V for the logic supply voltage for ICs on a motherboard.

Block diagram

Highlighted components are Nexperia focus products

Products

Schottky diodes: ≤ 250 mA, SOD523 / DFN1006-2
MOSFETs: 30 V, RDSon < 7.5 mOhm, LFPAK / MLPAK

Design considerations

Point of load non-isolated DC.DC
Asynchronous buck converter circuit
Standard efficiency
Step-down of voltage while stepping up current

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