TDK has announced the KAS series AC-DC power supplies, rated at 2 W and 4 W. Accepting a very wide 90 Vac to 305 Vac, 47 Hz – 440 Hz input, these board mounted converters will operate from 115 V, 230 V and 277 V nominal inputs. Target applications include security systems, building automation, professional household appliances, portable equipment and products requiring a separate standby voltage.
The series has a double insulated Class II construction, requiring no earth ground connection and has a 3,000 Vac primary to secondary isolation. Available output voltages are 3.3 V, 5 V, 8 V, 9 V, 12 V, 14 V, 15 V and 24 V and have a no-load power consumption of less than 300 mW. The KAS units are encapsulated in a plastic resin fiberglass case, providing additional protection against shock and vibration. The 2W KAS2 measures 28.5 x 25.8 x 17.0 mm and the 4W KAS4 37.0 x 27.5 x 17.5 mm.
The KAS2 will operate in ambient temperatures of -40 to +80°C, derating linearly to 40% load above 60°C. The KAS4 has a temperature range of up to -40 to +70°C, with model dependent derating. All the power supplies are certified to IEC/EN/UL/CSA 60950-1 and are designed to meet IEC/EN 60335-1 with CE marking for the Low Voltage and RoHS2 Directives. The series is compliant to EN 55032-B (radiated and conducted) and will meet EN 55024 immunity standards with an external varistor.
Main features and benefits
- 90 – 305 VAC input voltage
- Class II construction
- Wide temperature range, up to -40 to +80°C
- < 0.3 W off-load power consumption
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