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DC/DC regulators for high current applications

Posted: 10 Mar 2011 ?? ?Print Version ?Bookmark and Share

Keywords:iP1837? iPowIR? voltage regulator? single input? high current?

International Rectifier (IR) releases the iP1837 and iP1827 iPowIR voltage regulators for point-of-load (POL) applications such as servers, Netcom, data storage and telecom equipment requiring high current.

The iP1837 and iP1827 devices integrate a control MOSFET, synchronous FETKY, bootstrap diode, bootstrap capacitor and internal overcurrent protection in a compact 7.7 x7.7 mm LGA wireless package, reducing component count and shrinking PCB size by 20 percent compared to discrete solutions.

The new devices feature true differential voltage sensing for precise regulation, 0.5 percent accurate reference voltage overtemperature, precision deadtime trim to maximize efficiency, and body braking to optimize transient response. The switching frequency of the devices range from 250kHz to 1500kHz. They are pin-compatible for 25A and 35A applications, offer a wide input voltage range of 1.5V to 16V, programmable frequency up to 1.5MHz, flexible 5V bias or 3.3V bias/single input, and are optimized for 12V input operations and low output voltages.

The devices are fully protected and feature enhanced thermally-compensated internal hiccup overcurrent protection, allowing flat current limit overtemperature. Additionally, the devices have pre-bias startup, overvoltage protection and thermal shutdown. They also enable pin with voltage monitoring capability, power good output, and programmable soft start.

Production orders are available. Datasheets and application notes for the devices are available on the IR website, The IRDCiP1837 and IRDCiP1827 reference designs featuring the iP1837 and iP1827 are also available.

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