Power Supplies

ZVS Buck-Boost DC-DC Regulator Operates Down to -55°C

Vicor has released its PI3740 ZVS buck-boost dc-dc regulator with an extended operating temperature range of -55°C to +115°C and optional tin-lead BGA packaging. The PI3740 is a high-density and high-efficiency buck-boost regulator with an 8V to 60V input voltage range and supports output voltages from 10V to 50V.

The device offers up to 140W in a 10x14mm SiP package and higher power delivery can be achieved with additional devices in parallel.  The ZVS switching topology also enables efficiency as high as 96%.

Wide range direct to point-of-load regulators

The PI37xx is a series of high efficiency, wide input range dc-dc ZVS-Buck-Boost regulators integrating controller, power switches, and support components, all within a high density System-in-Package (SiP). The PI37xx requires only an external inductor and a minimal number of capacitors, to form a complete dc-dc switching mode buck-boost regulator.

The high switching frequency reduces the size of the external filtering components, improves power density, and enables very fast dynamic response to line and load transients. The PI37xx regulator sustains high switching frequency up to the rated input voltage without sacrificing efficiency and supports large dc-dc conversion ratios.

The device can also be configured to operate in constant current mode.

Vicor Corp.
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