For more information, please visit the product page. date 06/11/2015 page 1 of 7 SERIES: VSK-S25-T │ DESCRIPTION: AC-DC POWER SUPPLY FEATURES • • • • • • • up to 25W continuous power compact chassis mount design universal input (85~264 Vac / 100~370 Vdc) single, regulated output from 5~48 Vdc over voltage, over current, and short circuit protections UL/cUL safety approvals efficiency up to 87% MODEL VSK-S25-5U-T VSK-S25-9U-T output voltage output current output power ripple and noise1 efficiency (Vdc) max (A) max (W) typ (mVp-p) typ (%) 5 4.1 20.5 50 79 9 2.5 22.5 50 81 VSK-S25-12U-T 12 2.1 25 50 83 VSK-S25-15U-T 15 1.6 25 50 84 VSK-S25-24U-T 24 1.1 25 50 85 VSK-S25-48U-T 48 0.5 25 50 87 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-S25 - XXU - T Base Number Output Voltage cui.com For more information, please visit the product page. CUI Inc │ SERIES: VSK-S25-T │ 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 (included on chassis) OUTPUT parameter conditions/description capacitive load 5 Vdc output model 9 Vdc output model 12 Vdc output model 15 Vdc output model 24 Vdc output model 48 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 12,000 5,600 5,400 2,400 1,400 800 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 5 Vdc output model 9 Vdc output model 12 Vdc output model 15 Vdc output model 24 Vdc output model 48 Vdc output model typ max units % 7.5 12 20 20 30 60 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-S25-T │ 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 Load (%) 60 Safe operating area 40 20 ~ ~ 100 75 60 Safe operating area 40 -10 50 Ambient Temperature (°C) 70 Safe operating area 40 20 85 95 100 105 115 125 235 240 245 Input Voltage (Vac) cui.com ~ ~ 20 75 60 ~ ~ -40 load vs. input voltage (Vdc) (at 25°C) Load (%) ~ ~ 100 80 ~ ~ Load (%) 100 load vs. input voltage (Vac) (at 25°C) ~ ~ load vs. ambient temperature (at 100~240 Vac) 255 264 100 120 340 Input Voltage (Vdc) 370 For more information, please visit the product page. CUI Inc │ SERIES: VSK-S25-T │ DESCRIPTION: AC-DC POWER SUPPLY date 06/11/2015 │ page 4 of 7 MECHANICAL parameter conditions/description dimensions 96.10 x 54.00 x 32.00 (3.783 x 2.126 x 1.259 inch) min case material UL94V-0 typ units mm weight 170 cooling max g convection cooling MECHANICAL DRAWING units: mm[inches] tolerance: ±0.50[±0.020] >@ >@ >@ PIN CONNECTIONS 1 FUNCTION GND 2 AC(N) 3 AC(L) 4 -Vo 5 NC 6 TRIM 7 NC 8 +Vo Top View >@ PIN >@ >@ wire range: 24~12 AWG >@ >@ Side View cui.com For more information, please visit the product page. CUI Inc │ SERIES: VSK-S25-T │ 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 C2 T VS AC D C MO V 1 LO AD AC(N) AC (N) -Vo Table 1 Recommended External Circuit Components MODEL FUSE1 MOV1 C1 C2 TVS VSK-S25-5U-T 3.15A/250V S14K350 1µF 330μF SMBJ7.0A VSK-S25-9U-T 3.15A/250V S14K350 1µF 330μF SMBJ12A VSK-S25-12U-T 3.15A/250V S14K350 1µF 330μF SMBJ20A VSK-S25-15U-T 3.15A/250V S14K350 1µF 330μF SMBJ20A VSK-S25-24U-T 3.15A/250V S14K350 1µF 120μF SMBJ30A VSK-S25-48U-T 3.15A/250V S14K350 1µF 68μF SMBJ64A Note: 1. Fuse included on chassis 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-S25-T │ 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) 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 48 68 3.73 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-S25-T │ DESCRIPTION: AC-DC POWER SUPPLY date 06/11/2015 │ page 7 of 7 REVISION HISTORY rev. description date 1.0 initial release 09/06/2012 1.01 updated spec 01/08/2014 1.02 updated operating and storage temperatures, updated spec 02/25/2015 updated spec 06/11/2015 1.03 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.