Converter Technology

Reference design RD010 is released

Posted: 02 September, 2008

RD010 is a low power DC/DC converter designed for applications which need a low power negative rail bias supply.

The design produces -2.5V/-0.5A from an input voltage of +4V to +15V. The engineering report also details a modifed design which can deliver -5V/-0.4A from an input voltage of +4V to +12V.

The inverting rail is produced by using a buck-boost (or inverting) power topology which has a power stage as shown below.

Buck-Boost Power Topology

The duty cycle, D, of SW1 is controlled to maintain the output voltage in regulation. See our Design Library for details of our other high performance reference designs.