Cosel cuts AC-DC parts count to boost reliability

Cosel cuts AC-DC parts count to boost reliability

Technology News |
By Nick Flaherty

Cosel has designed an AC-DC power supply series with a lower part count to boost reliability for industrial applications.

The Cosel PDA AC-DC power supply series uses a quasi-resonant switching topology with a reduced number of components by eliminating the power factor correction (PFC) stage. The new design also boosts the efficiency by five percentage points to 87.5%, reducing the heat dissipation and further increasing system reliability for the drop-in replacement of PBA units.

The first models introduced are the 15W PDA15F, the 30W PDA30F and the 50W PDA50F, and can operate over a wide temperature range from -20 to +70 degrees C. The power supplies are UL/EN62368-1 certified and meet IEC61000-3-2 (Class A) requirements.

Designed for worldwide applications, the PDA series has an input voltage range of 85VAC to 264VAC single phase and meets safety standards with an input voltage range of 100-240VAC (50/60Hz).

The 15W PDA15F, the 30W PDA30F and the 50W PDA50F are available in three output voltages, 5V, 12V and 24V with corresponding output currents. The output voltage can be adjusted by a built-in potentiometer. The AC-DC series includes inrush current limiting, over-current protection with automatic recovery when the fault is removed, and over-voltage protection.

The units are designed to operate from a wide temperature range of -20 to +70 degrees C and can be mounted in any orientation, although derating may apply depending on ambient temperature and environment.

The PDA series complies with FCC-B, VCCI-B, CISPR11-B, CISPR32-B, EN55011-B and EN55032-B in conducted emission tests and have an input-to-output isolation voltage of 3,000 VAC, an input-to-frame-ground (FG) voltage of 2,000 VAC, and an output-to-frame-ground voltage of 500 VAC.

Designed for use in demanding applications where space is often limited, the PDA15F measures just 31 X 78 X 85mm (1.22 X 3.07 X 3.35 inches) and weighs 180g max without cover, and 210g with cover. The PDA30F measures 31 X 78 X 103mm (1.22 X 3.07 X 4.06 inches) and weighs 250g max without cover, and 280g with cover. The PDA50F measures 31 X 82 X 120mm (1.22 X 3.23 X 4.72 inches) and weighs 330g max without cover, and 370g with cover.

The PDA15F, PDA30F, and PDA50F are suitable for a wide range of applications, including measurement and process control, machine monitoring, display devices, and a variety of industrial equipments. They are RoHS and Low Voltage compliant and carry the CE and UKCA marks.

The company  has also expended its distribution network through a dela with Farnell.



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