The THC35 series of medical grade power supplies are Tumbler Technologies and TRUMPower’s latest addition of products to its AC/DC switching power supply product portfolio. It’s a new 35-W, BF-rated Class II-insulation medical open frame AC/DC power supply that features 2” x 3” x 1.12” compact package and efficiency of up to 89%.
The THC35 Series of power supplies are specially designed for home and healthcare environment requirements. It can withstand ESD levels of 8 kV contact and 15 kV air, and complies with the 4th edition medical EMC standards.
The THC35 input voltage can range from 85 – 264 VAC with input frequencies from 47 – 63 Hz. It is able to deliver 35 W (operating from 5 V at 30 W on specification sheet Models List) of continuous output power at convection cooling. The power supply series also offers maximum operating altitude specification of 5000 meters, and relative humidity from 5% to 95% non-condensing.
The power supply series also offers efficiency of 87% at typical 115 VAC, and an amazing 89% at 230 VAC. It offers an operating temperature of -20°C to +70°C, and storage temperatures from -40°C to +85°C. It can reduce its power rating from 100% at +50°C linearly to 70% at +70°C.; and a transient response of 4% maximum excursion or better on all models, recovering to 1% of final value within 500 μs after a 25% step load change.
The ripple and noise peak-to-peak with 20-MHz bandwidth of the series is 1%p-p max. The series is also considered highly reliable with its ability to demonstrate a MTBF (mean time between failures) greater than 250,000 hours at full load and at 25°C ambient per MIL-HDBK-217F. The product also featured protections against over-voltage, over-current, short circuit, and over-temperature; and can provided 0.3 W max of power under no-load consumption.
The THC35 series of power supply can also withstand voltages of 4,000 VAC from input to output providing 2 MOPP in between input and output. The series includes 5 standard single output models with part numbers and output voltages of: THC35-05 at 5 V, THC35-12 at 12 V, THC35-15 at 15 V, THC35-18 at 18 V, and THC35-24 at 24 V. Its output voltage is factory preset specifically designed to meet the user’s request. It operates at 90 to 264 VAC universal input; with possible applications of the power supply includes electrotherapeutic, patient monitoring, and portable medical devices.