With a compact standard design of a 3 x 5” PCB and fitting into a 1U height, these series comply with international electrical safety regulations for industrial and medical applications.
The CHD250 series offers a no-load power consumption of less than 0.5W. It features a nearly flat efficiency curve across the entire power range, achieving an exceptional efficiency of 93-94% typical with a 230 VAC input and full load. This helps engineers meet the energy efficiency criteria of the new "green power" standards and minimizes heat losses. Furthermore, this high efficiency allows these power supplies to be cooled by convection, eliminating the need for fans. This makes them ideal for applications requiring low audible noise.
This AC/DC family comprises five models with the following outputs: +12, 15, 24, 28, and 48 VDC. They also include mains failure signaling, output inhibit, and remote sensing functions, along with user-adjustable output voltage of +5/-4%. To ensure customers only pay for what they need, "options" include a 5VDC/0.5A standby output to power memory and logic circuitry and a power supply format with a cover.
The CHD250 units comply with IT equipment standards 60950-1 and the 3rd edition of the ANSI/AAMI ES60601-1 medical safety standard (which includes two levels of protection, 2 x MOPP), as well as with EMC EN55022/11 Class B conducted emissions. The power supplies are capable of operating in a temperature range of -20 to +70°C with no power limitation up to +50°C.
With an industrial and standard footprint format of 76.2 x 127.0 x 36.32 mm, these power supplies are in an open format, without the need for a “U” or “L” shaped radiator mounted on the power supply.
The CHD250 series are available from the specialist local distributor VENCO Electrónica SA in Spain and Portugal, as well as from Farnell, element14, Digikey and have a 3-year warranty.
