For more information, please visit the product page. date 06/11/2015 page 1 of 7 SERIES: VSK-S20 │ DESCRIPTION: AC-DC POWER SUPPLY FEATURES • • • • • • • up to 20W continuous power compact board mount design universal input (85~264 Vac / 100~370 Vdc) single output from 3.3~24 Vdc over voltage, over temperature, and short circuit protections UL/cUL safety approvals efficiency up to 85% MODEL output voltage output current output power ripple and noise1 efficiency (Vdc) max (A) max (W) typ (mVp-p) typ (%) 3.3 4.1 13.5 50 74 VSK-S20-5U 5 3.5 17.5 50 78 VSK-S20-9U 9 2.1 20 50 80 VSK-S20-12U 12 1.6 20 50 82 VSK-S20-15U 15 1.3 20 50 83 VSK-S20-24U 24 0.85 20 50 85 VSK-S20-3R3U Notes: 1. Ripple and noise are measured at 20 MHz BW by “parallel cable” method with 1 uF ceramic and 10 uF electrolytic capacitors on the output. PART NUMBER KEY VSK-S20 - XXU Base Number Output Voltage cui.com For more information, please visit the product page. CUI Inc │ SERIES: VSK-S20 │ DESCRIPTION: AC-DC POWER SUPPLY date 06/11/2015 │ page 2 of 7 INPUT parameter conditions/description min voltage frequency max units 85 100 typ 264 370 Vac Vdc 47 63 Hz 600 340 mA mA current at 115 Vac at 230 Vac inrush current at 115 Vac at 230 Vac 16 30 A A leakage current at 230 Vac, 50 Hz (RMS) 0.1 mA input fuse 3.15 A/250 V, slow-blow type (external) OUTPUT parameter conditions/description capacitive load 3.3 Vdc output model 5 Vdc output model 9 Vdc output model 12 Vdc output model 15 Vdc output model 24 Vdc output model line regulation at full load load regulation at 10~100% load min voltage set accuracy adjustability hold-up time at 115 Vac at 230 Vac switching frequency temperature coefficient typ max units 48,000 12,000 7,200 5,400 2,700 1,800 μF μF μF μF μF μF ±0.5 % ±1 % ±2 % ±10 % 15 80 ms ms 65 kHz ±0.02 %/°C PROTECTIONS parameter conditions/description min over current protection auto restart 110 short circuit protection continuous, auto restart over voltage protection 3.3 Vdc output model 5 Vdc output model 9 Vdc output model 12 Vdc output model 15 Vdc output model 24 Vdc output model typ max units % 7.5 7.5 12 20 20 30 Vdc Vdc Vdc Vdc Vdc Vdc max units SAFETY & COMPLIANCE parameter conditions/description isolation voltage input to output for 1 minute input to ground for 1 minute safety approvals UL60950-1, CE safety class class I conducted emissions CISPR22/EN55022, Class B radiated emissions CISPR22/EN55022, Class B ESD IEC/EN61000-4-2 Class B, contact ±6 kV/air ±8 kV radiated immunity IEC/EN61000-4-3 Class A, 10V/m EFT/burst min typ 3,000 2,000 IEC/EN61000-4-4 Class B, ±2 kV IEC/EN61000-4-4 Class B, ±4 kV (external circuit required, see figure 2) cui.com Vac Vac For more information, please visit the product page. CUI Inc │ SERIES: VSK-S20 │ DESCRIPTION: AC-DC POWER SUPPLY date 06/11/2015 │ page 3 of 7 SAFETY & COMPLIANCE (CONTINUED) parameter conditions/description surge IEC/EN61000-4-5 Class B, ±1 kV/±2 kV IEC/EN61000-4-5 Class B, ±2 kV/±4 kV (external circuit required, see figure 2) min typ max conducted immunity IEC/EN61000-4-6 Class A, 10 Vr.m.s PFM IEC/EN61000-4-8 Class A, 10 A/m voltage dips & interruptions IEC/EN61000-4-11 Class B, 0%-70% MTBF as per MIL-HDBK-217F at 25°C RoHS 2011/65/EU units 300,000 hrs ENVIRONMENTAL parameter conditions/description min operating temperature see derating curves storage temperature storage humidity typ max units -40 70 °C -40 105 °C 95 % non-condensing DERATING CURVES Safe operating area 40 75 60 Safe operating area 40 20 -10 -5 5 Safe operating area 40 ~ ~ 25 35 45 55 65 70 75 85 95 100 105 Ambient Temperature (°C) 115 125 235 240 245 255 ~ ~ -40 75 60 20 ~ ~ 20 100 Load (%) 60 load vs. input voltage (Vdc) (at 25°C) ~ ~ ~ ~ 100 80 Load (%) Load (%) 100 load vs. input voltage (Vac) (at 25°C) ~ ~ load vs. ambient temperature (at 100~240 Vac) 264 100 Input Voltage (Vac) 120 340 370 Input Voltage (Vdc) SOLDERABILITY parameter conditions/description min typ max units hand soldering for 3~5 seconds 350 360 370 °C wave soldering for 5~10 seconds (see wave soldering profile) 255 260 265 °C Peak Temp. 260°C Max. Wave Soldering Time 4 Sec. Max. 250 Temperature (°C) 200 10 Sec. Max. 150 100 50 0 Time (sec.) cui.com For more information, please visit the product page. CUI Inc │ SERIES: VSK-S20 │ DESCRIPTION: AC-DC POWER SUPPLY date 06/11/2015 │ page 4 of 7 MECHANICAL parameter conditions/description dimensions 70.0 x 48.0 x 23.5 (2.756 x 1.889 x 0.925 inch) min case material UL94V-0 typ max units mm weight 120 cooling g convection cooling MECHANICAL DRAWING units: mm[inches] tolerance: ±0.50[±0.020] pin diameter: Ø1.00[0.039]±0.10[±0.004] 70.0 2.756 PIN CONNECTIONS PIN FUNCTION 1 23.5 0.925 GND 2 AC(N) 3 AC(L) 4 TRIM 5 -Vo 6 +Vo 6.0 0.236 (TYP) FRONT VIEW Ø1.50[Ø0.059] 4.0 0.157 1 4 5 62.0 2.441 3 6 20.0 0.787 48.0 1.889 2 2 23.0 0.905 5 6 4 1 3 Grid size: 2.54 x 2.54 TOP VIEW PCB LAYOUT BOTTOM VIEW cui.com 5.75 0.226 4.0 0.157 (2 PLCS) For more information, please visit the product page. CUI Inc │ SERIES: VSK-S20 │ DESCRIPTION: AC-DC POWER SUPPLY date 06/11/2015 │ page 5 of 7 TYPICAL APPLICATION CIRCUIT Figure 1 AC(L) FU S E AC(L) C1 +Vo T VS 1 C2 AC / DC M OV 1 LOAD AC(N) AC(N) -Vo Table 1 Recommended External Circuit Components MODEL FUSE MOV1 C1 C2 TVS VSK-S20-3R3U 3.15A/250V S14K350 1µF 330μF SMBJ7.0A VSK-S20-5U 3.15A/250V S14K350 1µF 330μF SMBJ7.0A VSK-S20-9U 3.15A/250V S14K350 1µF 220μF SMBJ12A VSK-S20-12U 3.15A/250V S14K350 1µF 220μF SMBJ20A VSK-S20-15U 3.15A/250V S14K350 1µF 220μF SMBJ20A VSK-S20-24U 3.15A/250V S14K350 1µF 220μF SMBJ30A EMC RECOMMENDED CIRCUIT Figure 2 FUSE LDM LCM AC(L) AC( L) +Vo CY1 MOV1 CY2 -Vo AC(N) AC(N) Table 2 Recommended External Circuit Components Note: MOV1 S14K350 CY1, CY2 1000pF/400Vac CX 0.1μF/275Vac LCM 10mH LDM 4.7μH/2A Also refer to Table 1 cui.com C2 TVS1 + ACDC CX C1 RL For more information, please visit the product page. CUI Inc │ SERIES: VSK-S20 │ DESCRIPTION: AC-DC POWER SUPPLY date 06/11/2015 │ page 6 of 7 APPLICATION NOTES 1. Output voltage trimming Leave open if not used. Figure 3 Application Circuit for Trim pin (part in broken line is the interior of models) + Vo +Vo R1 V re f Formula for Trim Resistor R3 V re f aR 2 R2-a -R3 a= Vref R1 Vo’ - Vref down : R T= aR 1 R1-a -R3 a= Vo’ - Vref R2 Vref RT R1 Trim up : R T= R3 R2 RT R2 0V 0V Tr im up Tr im down Trim Note: Table 3 Notes: Value for R1, R2, R3, and Vref refer to Table 3 RT: Trim Resistor a: User-defined parameter, no actual meanings Vo': The trim up/down voltage Vout (Vdc) R1 (kΩ) R2 (kΩ) R3 (kΩ) Vref (V) 3.3 3.3 1.98 1 1.24 5 3.3 3.3 1 2.5 9 7.5 2.87 1 2.5 12 3.83 1 1 2.5 15 7.5 1.5 1 2.5 24 8.66 1 1 2.5 1. Output filtering capacitor C2 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. C1 is used to filter high frequency noise. TVS is recommended component to protect post-circuits (when converter fails). 2. All specifications measured at Ta=25C, humidity <75%, nominal input voltage, and rated output load, unless otherwise specified. cui.com For more information, please visit the product page. CUI Inc │ SERIES: VSK-S20 │ DESCRIPTION: AC-DC POWER SUPPLY date 06/11/2015 │ page 7 of 7 REVISION HISTORY rev. description date 1.0 initial release 07/26/2011 1.01 new template applied 03/07/2012 1.02 V-Infinity branding removed 08/21/2012 1.03 updated spec 01/08/2014 updated operating and storage temperatures, updated spec 06/11/2015 1.04 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.