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DC/DC converter handles 100V input voltage transients

Posted: 27 May 2010 ?? ?Print Version ?Bookmark and Share

Keywords:DC/DC converter? voltage transient? switching?

PI3101 DC/DC converter

From Picor comes the PI3101 Cool-Power high-density isolated DC/DC converter, delivering 60W of output power in half the size of existing products.

The PI3101 delivers over 105W per square inch. It combines isolation, voltage transformation and output regulation into a high density, surface-mount Power-System-in-Package platform with a tiny footprint and very low profile, making it well-suited for applications where board space, airflow and height dimensions are critical.

The PI3101 operates over a wide input voltage range of 36V to 75Vdc while providing a regulated 3.3V output at up to 18A output current. The PI3101 can withstand input voltage transients of up to 100V for 100ms and provides 2250V input-to-output isolation.

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. The PI3101 provides the system designer with a simple solution that requires very few external components and achieves 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 analog output voltage proportional to the internal temperature of the product, serving also as a fault alarm. The PI3101 is self-protected against various fault conditions including: input overvoltage and undervoltage lockout with auto-restart capability, over-temperature and output overvoltage protection with auto- restart capability and a dual current limit threshold to protect against short circuits and overload conditions.

Pricing for the PI3101 is $29.97 each in 1,000 units. The PI3101 is sampling now with full production volumes expected by the end of Q2.

- Ismini Scouras

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