Power Supply Application:

This custom made switched mode power supply is designed to supply traffic information displays at motorways. The system consists of up to 20 charger and battery combinations, which are parallelly connected to a single power bus. This connection provides active current sharing and an uninterrupted supply of power when AC input power is lost.

Model description:

The power supply circuitry is based on the double-ended feed-forward principle. This cost effective topology provides a high level of reliability, a good efficiency and a compact size.

The temperature compensated output voltage of the unit matches with the charge characteristics of the lead acid batteries, which guaranties an optimal lifetime of the connected battery.

Furthermore, the power supply is provided with a two wire active current share control bus, which provides an accurate current sharing between the parallel connected units. A remote sense input compensates the voltage drop on the output wiring and ensures an accurate voltage at the location of the load and battery.

Product Inquiries

Power Supply Highlights:

• Single 13.8Vdc output.
• Remote sensing for compensation of voltage drop at output wiring.
• Accurate current sharing between in parallel connected units by means of a two wire control bus.
• Temperature compensation of the output voltage for an optimal adaptation to the charge characteristics of the connected lead acid battery.
• Protection against overvoltage-, short circuit- and thermal overload conditions.
• Active soft-start circuit adequately limits the inrush current at both cold- and hot start conditions.
• Meets international E.M.C. and safety standards.
• CE marked.

Mechanical construction:

The power supply has an open frame construction and is provided with an aluminium L-bracket.

Dimensions:

Housing – 275 × 125 × 63
PCB – 275 × 100 × 54