A new buck regulator series has been announced by Vicor that maximises power density and flexibility for high efficiency point of load DC-DC regulation.

The integration of a high ­performance Zero-Voltage Switching (ZVS) topology within the Cool-Power ZVS buck regulator series PI33xx  increases point of load performance, providing a very good level of power efficiency up to 98 percent peak.

Devices in the series are highly integrated with control circuitry, power semiconductors and support components in a high density 10mm by 14mm by 2.56mm LGA System in a Package (SiP).

The buck regulators can convert input supplies ranging from 8V to 36V to output voltages from 1V to 16V and output current up to 10A for power delivery up to 120W.

Power delivery can be further increased by interleaving up to six of these buck regulators using single wire current sharing without the need of any additional components.

The use of a ZVS topology enables high-frequency operation that reduces efficiency by minimising the switching losses associated with conventional buck regulators that use hard-switching topologies.

The high switching ­frequency of this series reduces the size of the external filtering components, improving power density.

Vicor Corporation