date 01/18/2012 page 1 of 4 SERIES: VSKM-S5 Series │ DESCRIPTION: MEDICAL SWITCHING POWER SUPPLY FEATURES • • • • • Up to 5.5 W continuous power Compact board mount design Universal input (85~264 Vac / 110~370 Vdc) Single output from 3.3 to 24 V Over voltage, over temperature, and short circuit protections • Full medical approvals • Efficiency up to 78% RoHS MODEL VSKM-S5-3R3U output voltage output current output power ripple and noise1 efficiency (Vdc) max (A) max (W) typ (mVp-p) typ (%) 3.3 1.25 4.2 30 66 VSKM-S5-5U 5 1 5 30 72 VSKM-S5-9U 9 0.55 5 30 74 VSKM-S5-12U 12 0.42 5 30 76 VSKM-S5-15U 15 0.33 5 30 76 VSKM-S5-24U 24 0.23 5.5 30 78 Notes: 1. Ripple and noise measured at 20 MHz bandwidth PART NUMBER KEY VSKM-S5 - XXU Base Number Output Voltage cui.com CUI Inc │ SERIES: VSKM-S5 Series │ DESCRIPTION: MEDICAL SWITCHING POWER SUPPLY date 01/18/2012 │ page 2 of 4 INPUT parameter conditions/description min voltage frequency max units 85 110 typ 264 370 Vac Vdc 47 63 Hz input current at 110 Vac at 230 Vac 110 70 mA mA inrush current at 110 Vac at 230 Vac 10 20 A A external input fuse (recommended) slow blow, 250 V 1 A OUTPUT parameter conditions/description min line regulation load regulation 10 ~ 100% temperature coefficient typ max units ±0.5 % ±1 % 0.02 %/°C hold-up time at 230 Vac 50 ms voltage set point accuracy 3.3 V output all other models ±3 ±2 % % 100 kHz switching frequency PROTECTIONS parameter conditions/description min over voltage protection diode clamp and chip lock up short circuit protection auto recovery with no damage from a short on any output typ over-temperature protection max units 150 °C max units SAFETY & COMPLIANCE parameter conditions/description min isolation voltage primary to secondary (for 1 minute) typ 4,000 Vac safety approvals IEC 60601-1, EN 60601-1, UL 60601-1 safety class class II EMI/EMC EN 55011 (level A), IEC/EN 61000-4-2 (level 4, 8kV/15kV), IEC/EN 61000-4-3, IEC/EN 61000-4-4 (level 4, 4kV), IEC/EN 61000-4-5 (level 4, 2kV/4kV) RoHS compliant yes MTBF 25°C 300,000 hrs ENVIRONMENTAL parameter conditions/description min typ max units operating temperature -25 70 °C storage temperature -40 105 °C 95 °C 95 % case temperature operating humidity non-condensing cui.com CUI Inc │ SERIES: VSKM-S5 Series │ DESCRIPTION: MEDICAL SWITCHING POWER SUPPLY date 01/18/2012 │ page 3 of 4 DERATING CURVES ≈ 100 100 80 Load (%) Load (%) 2. output power vs. input voltage ≈ 1. output power vs. ambient temperature 60 50 40 20 80 60 50 40 -40 -30 -25 -20 -10 0 10 ≈ ≈ 20 50 60 70 70 85 Ambient Temperature (°C) 110 125 210 225 240 264 Input Voltage (Vac) MECHANICAL parameter conditions/description dimensions 2.0 x 1.0 x 0.6 inch (50.8 x 25.4 x 15.2 mm) min case material UL94V-0 typ weight max units 35 g MECHANICAL DRAWING units: mm [inches] tolerance: ±0.5 [±0.02] pin section tolerance: ±0.10 [±0.004] 50.80 2.000 15.16 0.597 3 4 2 4 10.16 0.400 20.32 0.800 12.70 0.500 3 1 10.16 [0.400] 2 25.40 1.000 4 5.7 2 [1.800] 50 +0. 020 50.80+0. -0. 00 [2.0 00-0. 000 ] recommended PCB footprint (top view) grid: 2.54 mm (0.10 inch) 45.72 1.800 PIN CONNECTIONS PIN FUNCTION 1 AC(N) 2 AC(L) 3 +Vo 4 -Vo cui.com 20.32[0. 800] 1 1.00 0.039 (TYP) 6.00 0.236 (TYP) +0.50 .0 20 25.40 -0 [1.000 +0 ] .0 0 - 0.000 ∅1.20 [0.047] CUI Inc │ SERIES: VSKM-S5 Series │ DESCRIPTION: MEDICAL SWITCHING POWER SUPPLY date 01/18/2012 │ page 4 of 4 TYPICAL APPLICATION CIRCUIT ) 86 ( 17 & / L NF +V0 & & C7 + C6 5/ C8 -V0 1 N EMC Application Figure EXTERNAL CAPACITORS TYPICAL VALUE (Unit: μF) Notes: MODEL C1 C2 VSKM-S5-3R3U 47 0.1 VSKM-S5-5U 47 0.1 VSKM-S5-9U 33 0.1 VSKM-S5-12U 33 0.1 VSKM-S5-15U 33 0.1 VSKM-S5-24U 10 0.1 1. Output filtering capacitor C1 is an electrolytic capacitor. It is recommended to use high frequency and low impedance electrolytic capacitors. For capacitance and current of capacitor please refer to manufacture’s datasheet. Voltage derating of capacitor should be 80% or above. C2 is ceramic capacitor, it is used to filter high frequency noise. 2. It is recommended to use a 1A/250V slow blow FUSE. External input NTC is recommended to use 5D-14 or 10Ω/2W wire-round resistor. 3. If EMC performance is required, it is recommended to add “EMC filter” at the input end (see EMC Application Figure). C6: X capacitor, recommended parameter 0.1μF/275V; C7,C8: Y capacitor, recommended parameter 2200pF/400V; CY:Y capacitor, recommended parameter 102K/400V NF: common model choke, recommended inductance is about 10mH-30mH. REVISION HISTORY rev. description date 1.0 initial release 01/16/2012 The revision history provided is for informational purposes only and is believed to be accurate. Headquarters 20050 SW 112th Ave. Tualatin, OR 97062 800.275.4899 Fax 503.612.2383 cui.com [email protected] CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website. CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use. CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.