Maxim introduces the MAX17480 regulator

Maxim has brought out a fixed-frequency, step-down regulator for the AMD serial VID interface (SVI) CPU.

The MAX17480 regulator features two high-current SMPSs for the CPU cores and one 4A internal switch SMPS for the Northbridge (NB) core.

To enhance design flexibility, it provides an adjustable switching-frequency range of 100 to 600kHz for the CPU cores and 200kHz to 1.2MHz for the NB core.

It also features SMPS feedback-adjustment amplifiers to allow for programmable AC and DC droop.

All three SMPSs can be independently programmed to any voltage using AMD's SVI.

The two CPU-core SMPSs operate 180-degrees out-of-phase for true interleaving and can be configured as independent outputs or as a combined output.

The NB-core SMPS runs at twice the switching frequency of the CPU-core SMPSs, thus allowing the use of smaller external components.

The MAX17480 also offers enhanced transient detection and transient phase-repeat capabilities for lower CPU output capacitance.

Output overvoltage protection (OVP), undervoltage protection (UVP), undervoltage-lockout (UVLO) protection and thermal protection are also included.

The MAX17480 is available in a space-saving, 5 x 5mm, 40-pin TQFN package with an exposed pad.

It is fully specified over the -40C to +105C extended-industrial temperature range.

An evaluation kit with recommended external components is available to reduce design time.

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