Power Electronics / Power Management


Controllers for intermediate bus converters

23 July 2008 Power Electronics / Power Management

Vishay has released two new controller ICs for intermediate bus converter applications, which integrate 75 V half-bridge MOSFET drivers with a 1,6 A peak current driving capability, as well as a full range of current monitoring and control features. The Siliconix SiP11205 and SiP11206 controllers are designed to work on the primary side of an isolated half-bridge IBC in telecom and network equipment and 1/16 or 1/8 power modules where standard bus voltages such as 48 V need to be converted to 12 V or lower intermediate voltages. They step down voltages with >95% efficiency and handle 100 V transients for 100 ms in compliance with ETSI 300-132-2. Integrated ±1,6 A high-voltage MOSFET drivers allow each IC to drive both the low- and high-side switching devices in a half-bridge converter. The oscillator frequency is programmable from 200 kHz to 1 MHz.

EBV Electrolink, +27 (0)21 402 1940, [email protected], www.ebv.com



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