Low Power SMD Converters Target Critical Medical Designs

RECOM has introduced SMD versions for its recently released 3.5 W, 5 W and 6 W medical-grade DC/DC modules. All key features required for critical medical applications are now available for SMD designs. The REM3.5E, REM5E and REM6E series of medical-grade regulated DC/DC converters now come with either pins or SMD. They feature reinforced 250 VAC continuous working isolation with >8mm creepage/clearance providing 2xMOPP and qualify for medical B, BF and CF applications due to their very low 1 μA leakage current. The reinforced insulation of up to 10 kVDC is sufficient for virtually every medical application.

These compact SMD packages have tightly regulated single or dual outputs with UVLO, SCP, OCP and OVP. The modules operate at above 80% efficiency in a wide temperature range from -40°C up to +85°C without derating. They are UL marked and certified to CB, IEC, EN and ANSI/AAMI 60601 3rd ed. Safety and 4th ed. EMC medical standards.

Samples and OEM pricing are available from all authorized distributors or directly from RECOM.

RECOM | www.recom-power.com


Class I and II 500 W Configurable Medical Power Supplies

TDK has announced the XMS500 series of AC-DC power supplies, rated at 500 W output power, with a Class I and Class II (no earth ground connection) construction. The series conforms to curve B conducted and radiated emissions, with a 6 dB margin and has a low leakage current of less than 150 µA. The high operating efficiency and mechanical design enables the XMS500 to operate at full load with airflow rates of just 1 m/s, reducing audible noise. Applications include home healthcare, hospital, imaging and clinical diagnostic systems in addition to industrial, test and measurement and communications equipment.

xms500-pr-nov17-whiteDesigned as a configurable product, engineers can select from multiple standard options, to optimize both system performance and cost, without incurring development charges or minimum purchase quantities. The options include case styles (including an internal low speed fan), a choice of standby voltage, a 12 V fixed or variable speed fan supply, remote on/off, AC fail and single or dual input fuses. 12 V, 24 V, 3 6V or 48 V nominal outputs are offered, with other voltages upon request.

The XMS500 accepts a 90 VAC to 264 VAC input, withstanding 300Vac for five seconds and can operate in ambient temperatures of up to +70°C, derating linearly above 50°C by 2.5% per °C. The open frame version measures 102 mm x 180 mm x 37 mm and the U-channel 107 mm x 180 mm x 39.5 mm. The low profile allows installation in systems where space is limited.

All models are certified to IEC/EN/UL/CSA 60601-1 and IEC/EN/UL/CSA 60950-1 with CE marking for the Low Voltage, EMC and RoHS2 Directives. The series is compliant to EN 55011-B, EN 55032-B conducted and radiated emissions (for both Class I and II), EN 61000-3-2 harmonics, IEC 60601-1-2 Edition 4, and IEC 61000-4 immunity standards.

Input to output isolation is 4,000 VAC (2 x MoPP), input to ground isolation 1,500 VAC (1 x MoPP) and output to ground isolation is 1,500 VAC (1 x MoPP) for suitability in B and BF rated equipment.

TDK-Lambda Americas | www.us.tdk-lambda.com

AD-DC Power Supplies for Medical Designs

CUI’s Power Group has announced five new open frame series, ranging from 180 W up to 550 W, to its line of internal ac-dc medical power supplies. Certified to the medical 60601-1 edition 3.1 safety standards for 2 x MOPP applications and 4th edition EMC requirements, the VMS-180, VMS-225, VMS-275, VMS-350, and VMS-550 series feature high efficiency up to 94% and high power densities up to 30 W/in3. The new models are housed in 2 x 4 inch (50 x 101 mm) and 3 x 5 inch (76 x 127 mm) packages with profiles measuring as low as 0.75 inches (19 mm), providing a compact, high density solution for medical diagnostic equipment, medical monitoring devices and dental applications.

high-density-medical-printAll of the new VMS series provide output voltage options from 12 VDC to 58 VDC, feature wide universal input voltage ranges from 80 to 264 VAC and offer no-load power consumption as low as 0.5 W. The 180 W to 550 W models also carry an input to output isolation of 4200 Vac with leakage current ratings as low as 0.3 mA at 230 VAC. Operating temperatures range at full load from -40°C up to +50°C with forced air cooling, derating to 50% load at +70°C.

Additional features include protections for over voltage, over current, and short circuit, power factor correction, and a 12 VDC / 500 mA fan output. These medical power supplies further meet EN 55011 Class B limits for conducted and radiated emissions and achieve an MTBF of 3.37 million hours, calculated per Telcordia SR-332 Issue 3. The VMS series are available immediately with prices starting at $108.94 per unit at 25 pieces through distribution.

CUI | www.cui.com