Housed in a sealed plastic case with an aluminum base plate, the TUNS1200 is only 12.7 mm (0.5") high and weighs less than 280 grams. Compared to existing 1kW AC/DC modules, the TUNS1200 has a 36% smaller footprint and delivers 21% more power. The unit can operate with base plate temperatures ranging from -40°C to +100°C. TUNS1200 modules can be paralleled, up to nine units (up to 9,750W), their output voltage can be adjusted down to zero volts, and constant voltage or constant current operating modes are easily configured.
Thanks to COSEL's high-efficiency topology, the TUNS1200 provides 21% more power in a 36% smaller footprint than existing AC/DC modules.
Housed in a sealed enclosure with an aluminum baseplate, the TUNS1200 is the latest addition to COSEL's TUNS series, which includes a 50W quarter-brick, a 100W half-brick, and full-brick units of 300, 500, and 700W. Engineered with the latest technology, the TUNS1200 delivers its full power up to a baseplate temperature of +85°C and is capable of safe operation up to +100°C with derating.
Designed for worldwide applications, TUNS1200 power supplies have an input voltage range of 85VAC to 305VAC single-phase and conform to safety standards for input voltage ranges of 100-277VAC (50/60Hz).
The TUNS1200 series comprises three output voltage versions: TUNS1200F12 (12V/84A), TUNS1200F28 (28V/43A), and TUNS1200F48 (48V/25A). The output voltage can be adjusted +/- 20% (-20%/+10% for the 48V version) using the trimming pin. Additionally, the TUNS1200 series includes a Voltage Voltage Regulator (VTRM) that allows the output voltage to be adjusted to zero by applying an external voltage source. Utilizing the latest technology, the TUNS1200 has a typical power efficiency of 92% and a power factor of 0.98 at 100V.
For applications such as battery chargers requiring constant current (DC), the TUNS1200 includes a dedicated pin (ITRM). By applying a DC voltage or connecting a resistor to the -S terminal, the constant current can be set from just above zero up to the desired current.
In applications where higher power is required and physical height is a concern, up to nine TUNS1200 units can be connected in parallel, delivering up to 9,750W in conduction cooling mode. When the units are connected in parallel and the Current Balance (CB) pin is used, COSEL's active current sharing ensures that each module delivers the correct amount of current to the load.
Optimized for conduction cooling, the TUNS1200 series can operate within a motherboard temperature range of -40 to +100°C and 20–95% RH (non-condensing). Depending on the cooling and mounting method, power reduction may occur.
Housed in a sealed plastic enclosure with an aluminum base plate, the TUNS1200 measures 117.3 x 86.8 x 12.7 mm. It includes four mounting holes for attaching the unit to a cold plate or additional heatsink. The standard unit comes with M3 threaded mounting holes, and a 3.4 mm non-threaded mounting insert (T option) is available.
The units have 3,000 VAC input-output (2MOOP), 2,000 VAC input-to-ground (1MOOP), and 500 VAC output-to-ground isolation. Overcurrent, overvoltage, and thermal protection are included as standard.
Ideal for industrial and medical applications, the TUNS1200 meets the following safety agency certifications: UL62368-1, EN62368-1, C-UL (equivalent to CAN/CSA-C22.2 No. 62368-1), ANSI/AAMI ES60601-1, EN60601-1 3rd, C-UL (equivalent to CAN/CSA-C22.2 No. 60601-1), and IEC60601-1-2 4th. The TUNS1200 includes an active filter that meets IEC61000-3-2 (Class A) harmonic attenuation.
Benefiting from an optimized design for conduction cooling, the TUNS1200 is suitable for applications requiring a quiet power solution, such as in an operating room. It is also suitable for industrial applications where forced-air ventilation is impossible due to environmental limitations. Mounted on a chassis or cold plate, the TUNS1200 can deliver impressive power with a high level of reliability.
The power supply complies with the RoHS directive and is CE marked in accordance with the Low Voltage Directive.
