1. Open Frame Medical Power SuppliesAn Introduction to the VMS Series 2012 CUI Inc

2. IntroductionPurposeTo provide an overview of the IEC 60601-1 medical standard andthen discuss the VMS medical ac-dc series and its advantagesObjectives Summarize medical safety requirements for ac-dc power supplies Introduce the VMS ac-dc series and its available configurations Describe the VMSs key features and specifications Describe typical applications for the VMS series Content: 12 pages Learning Time: 5 minutes 2012 CUI Inc 3. IEC 60601-1 IEC 60601-1 is the International standard for electronic devicesin medical / healthcare applications Each country may adopt their own deviation of the IEC 60601standard (such as UL 60601) Most countries have harmonized their standards to match IEC 60601 The 3rd edition of IEC 60601-1 was published in 2005 and became effectiveDecember 2010 The 2nd edition remains in effect through June 1st, 2012 in Europe andCanada; June 1st 2013 in the United States The differences between the 2nd and 3rd editions concern the classification of a medical device, not the design of the power supply utilized in the device. 2012 CUI Inc 4. 2nd Edition Device ClassificationsIf the device is operated within the patient vicinity, defined as 6 foot radiusaround a patient chair or bed, then IEC 60601-1 should be applied. Type B" operates within the patient vicinity (Body) Type BF makes physical contact with the patient (Body Floating) Type CF makes physical contact with the heart (Cardiac Floating)Classification of Equipment (Type B | BF |CF), determines what levels isolation / insulation / 6 FEET 6 FEETcreepage / clearance / leakage will be required.6 FEET 2012 CUI Inc 5. New 3rd Edition Device ClassificationsThe device manufacturer uses an ISO-14971 Risk Analysis / Management processto define 1 of 4 possible "Means of Protection" (MOP) classifications:ONE MOOP: Single Means of Operator ProtectionTWO MOOP: Two Means of Operator ProtectionONE MOPP: Single Means of Patient ProtectionTWO MOPP: Two Means of Patient Protection 2012 CUI Inc 6. IEC 60601-1 Requirements by Classification 2nd Edition Requirements by Classification ClassificationsRequirements Type BIsolation: 1500 V ac Creepage: 2.5 mm Basic Insulation Type BF Isolation: 3000 V ac Creepage: 5 mmDouble Insulation Type CF Isolation: 4000 V ac Creepage: 8 mmDouble Insulation 3rd Edition Requirements by Classification ClassificationsRequirements One MOOPIsolation: 1500 V ac Creepage: 2.5 mmBasic Insulation Two MOOPIsolation: 3000 V ac Creepage: 5 mmDouble Insulation One MOPPIsolation: 1500 V ac Creepage: 4 mmBasic Insulation Two MOPPIsolation: 4000 V ac Creepage: 8 mmDouble InsulationRegardless of edition or classification, medical devices may not exceed 500uA Leakage(UL deviation specifies 300uA max) and must have dual fused input protection. 2012 CUI Inc 7. No Effect to Power Supply DesignType B applications are satisfied by a non-medical IEC 60950-1 rated power supplywith reduced leakage currents. This holds true for One MOOP classifications.Type BF classifications are satisfied by IEC 60601-1 rated power supplies which willcontinue to satisfy both TWO MOOP and ONE MOPP classifications.Type CF classifications are satisfied by an IEC 60601-1 power supply with anadditional isolation barrier between the supply and the applied part (that touchesthe patient). The secondary barrier is typically an isolation transformer or dc-dcconverter with 8 mm creepage & double insulation. This holds true for the TWOMOPP classification. 2012 CUI Inc 8. VMS Low No-Load Power Medical Series Efficiency up to 91% Medical (IEC 60601-1) 3rd edition approvals Low no-load power consumption Compact footprints Universal input 90 ~ 264 Vac Over current, over temperature, over voltage protections 2012 CUI Inc 9. Standby Power Consumption 5~10% of total power consumed in the US occurswhen equipment is in standby mode Regulations in place dictating no-load power forexternal power supplies Growing importance in embedded power supplies Medical equipment will have an increasing impacton worldwide energy consumption CUIs 20, 40, 60 and 100 W models offer 0.5 Wno-load consumption to address this trend 2012 CUI Inc 10. VMS Low No-Load Power Medical SeriesSeriesPower Output Voltages Size Leakage CurrentVMS-2020 W3.3, 5, 9, 12, 15, 24 V dc2.38 x 1.6 x 0.67 in < 100uAVMS-4040 W3.3, 5, 9, 12, 15, 24, 30, 36, 48 Vdc 3.0 x 2.0 x 0.75 in< 100uAVMS-6060 W5, 12, 15, 24, 48 Vdc 4.0 x 2.0 x 1.1 in < 100uAVMS-100 100 W 5, 9, 12, 15, 18, 24, 28, 36, 48 Vdc5.0 x 3.0 x 1.05 in< 300uA 2012 CUI Inc 11. VMS High Density Medical Power Series Typical efficiency: 91% Full medical (IEC 60601-1) 3rd editionand ITE (IEC 60950-1) approvals Power densities up to 19 W/in3 Universal input 90 ~ 264 Vac Active power factor correction Auxiliary fan output: 12 V Over current, over temperatureand over voltage protections 2012 CUI Inc 12. VMS High Density Medical Power Series SeriesPower Output VoltagesSizeLeakage Current VMS-160 160 W 5, 12, 24, 48 V dc 4.0 x 2.0 x 1.08 in < 300uA VMS-365 365 W 12, 24, 48 V dc5.0 x 3.0 x 1.17 in < 300uA 2012 CUI Inc 13. VMS Series Efficiency CurvesEff (%) VMS-160-12Eff (%) VMS-365-12100 100 95 95 90 90 115Vac115Vac 85 85 230Vac230Vac 80 80 75 75 70 700 20 40 60 80 100 120 Load (%)0 20 40 60 80 100 120 Load (%) 2012 CUI Inc 14. ApplicationsThe VMS series is perfect for a wide range of medical andnon-medical applications:Diagnostic Equipment Medical imaging, CT scanners, ultrasoundMedical Monitoring Blood pressure monitor, ECG, EEGHome Patient Care Automated bed, CPAP, infusion pumpNon-Medical LED displays, networking, telecom, consumer electronics 2012 CUI Inc 15. Summary IEC 60601-1 sets the classification for medical equipment and determines whatlevels of isolation / insulation / creepage / clearance / leakage will be required The VMS series is a high efficiency line of ac-dc power supplies designed tocomply with the international medical safety standardLearn More View CUIs medical power supplies ranging from 5~365 W View CUIs full Power product portfolio 2012 CUI Inc 16. www.cui.com 2012 CUI Inc