Linear Technology LT4180 DC/DC controller

Linear Technology has released the LT4180, a virtual remote sense DC/DC controller that eliminates the remote sense wires required to compensate for the voltage drop in cables, wires and circuit board trace runs.

The device continuously interrogates the line impedance and corrects the regulator’s output voltage. It maintains a corrected regulated voltage at the load, regardless of current or line impedance.

The 3 to 50 V input voltage range addresses a variety of applications, including remote instrumentation, battery charging, wall adapters, notebook power, surveillance equipment and halogen lighting.

It operates with any topology regulator in either isolated or non-isolated power supplies. The output correction is obtained by modulating the output and measuring the incremental change in voltage that occurs with a change in current.

Any modulation noise is eliminated by the supply bypass capacitor located at the load.