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Isolated dc-dc converter in a chip-sized package

29 April 2010

Vicor subsidiary, Picor has introduced the PI3101 Cool-Power high-density isolated dc-dc converter for advanced telecom and wireless infrastructure, networking and communications, PoE applications and high speed server platforms. The PI3101 is the first in a new family of high-density power conversion products that delivers a regulated 3.3V output at up to 18A output current, from a wide input voltage range of 36V to 75Vdc. The PI3101 achieves 25W/cm3, some three to four times that of existing products, and optimises board area by providing 16.5W/cm2. The PI3101 combines isolation, voltage transformation and output regulation into a high density, surface-mount Power-System-in-Package (PSiP) platform with a tiny footprint (3.6cm2) and very low profile (6.7mm).

The Cool-Power family is built on a proprietary ZVS topology using advanced control silicon integration, state-of-the-art planar magnetics and high performance power semiconductor technology enabling switching frequencies in excess of 1MHz with up to 87% efficiency. Fast transient response to dynamic loads limits the requirement for output bulk capacitance and EMI performance is significantly improved due to the inherent low noise and high frequency characteristics of the product.

The PI3101 is fully equipped with a variety of programmable features including: +/-10% output voltage trimming, programmable soft-start capability, remote on/off ENABLE and an accurate temperature monitor function that provides an analogue output voltage proportional to the internal temperature of the product, serving also as a fault alarm. It is self-protected against various fault conditions including: input over-voltage and under-voltage lockout with auto-restart capability, over-temperature and output over-voltage protection with auto restart capability and a dual current limit threshold to protect against short circuits and overload conditions.


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