VSK-S3-3R3U

Additional Resources: Product Page | 3D Model | PCB Footprint date 06/01/2022 page 1 of 5 SERIES: VSK-S3 │ DESCRIPTION: AC-DC POWER SUPPLY FEATURES • • • • • • • up to 3 W continuous power compact board mount design universal input (85~264 Vac / 110~370 Vdc) single output from 3.3~24 V over voltage, over temperature, and short circuit protections UL/cUL safety approvals efficiency up to 78% MODEL VSK-S3-3R3U output voltage output current output power ripple and noise1 efficiency (Vdc) max (A) max (W) typ (mVp-p) typ (%) 3.3 0.7 2.3 30 63 VSK-S3-5U 5 0.6 3 30 72 VSK-S3-9U 9 0.33 3 30 74 VSK-S3-12U 12 0.25 3 30 76 VSK-S3-15U 15 0.2 3 30 76 VSK-S3-24U 24 0.125 3 30 78 Notes: 1. Ripple and noise measured at 20 MHz bandwidth PART NUMBER KEY VSK-S3 - XXU Base Number Output Voltage cui.com Additional Resources: Product Page | 3D Model | PCB Footprint CUI Inc │ SERIES: VSK-S3 │ DESCRIPTION: AC-DC POWER SUPPLY date 06/01/2022 │ page 2 of 5 INPUT parameter conditions/description min voltage frequency max units 85 110 typ 264 370 Vac Vdc 47 440 Hz current at 110 Vac at 230 Vac 65 30 mA mA inrush current at 110 Vac at 230 Vac 10 20 A A external input fuse (recommended) slow blow, 250 V 0.5 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 accuracy 3.3 V model all other models ±3 ±2 % % 100 kHz switching frequency PROTECTIONS parameter conditions/description min over voltage protection 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 typ isolation voltage primary to secondary (for 1 minute) safety approvals UL 60950-1 safety class class II EMI/EMC EN 55022 (level A), IEC/EN 61000-4-2 (level 4, 8kV/15kV), IEC/EN 61000-4-3, IEC/EN 61000-4-4 (level 3, 2kV), IEC/EN 61000-4-5 (level 3, 1kV/2kV) MTBF 25°C RoHS 2011/65/EU 3,000 Vac 300,000 hrs ENVIRONMENTAL parameter max units operating temperature conditions/description min -25 70 °C storage temperature -40 105 °C 95 °C 95 % case temperature operating humidity non-condensing cui.com typ Additional Resources: Product Page | 3D Model | PCB Footprint CUI Inc │ SERIES: VSK-S3 │ DESCRIPTION: AC-DC POWER SUPPLY date 06/01/2022 │ page 3 of 5 DERATING CURVES MECHANICAL parameter conditions/description min dimensions 1.457 x 0.908 x 0.591 (37.0 x 23.0 x 15.0 mm) case material UL94V-0 typ max units inch weight 25 g MECHANICAL DRAWING units: mm [inches] tolerance: ±0.5 [±0.02] pin section tolerance: ±0.10 [±0.004] PIN CONNECTIONS 37.00 1.457 15.00 0.591 4.10 0.161 (TYP) PIN FUNCTION 1 L 3 N 13 N/C 14 0V 16 +Vo 22 +Vin(DC) 26 -Vin(DC) 0.80 0.031 (7 PLCS) 3.26 0.128 (2 PLCS) 8.34 0.328 1 3 2.61 0.103 (TYP) 13 23.00 0.906 2.54 1.2 0.047 (7 PLCS) 26 22 16 14 17.78 0.700 26 22 16 14 1 3.26 0.128 (2 PLCS) BOTTOM VIEW 3 5.08 0.200 (TYP) RECOMMENDED FOOTPRINT TOP VIEW 13.42 0.528 cui.com 13 Additional Resources: Product Page | 3D Model | PCB Footprint CUI Inc │ SERIES: VSK-S3 │ DESCRIPTION: AC-DC POWER SUPPLY date 06/01/2022 │ page 4 of 5 TYPICAL APPLICATION CIRCUIT Figure 2 VSK-S3 EMC Filtering Circuit Figure 1 EXTERNAL CAPACITORS TYPICAL VALUE (Unit: µF) MODEL C1 C2 C3 TVS VSK-S3-3R3U 150 0.1 4.7/400V P4KE6.8A VSK-S3-5U 150 0.1 4.7/400V P4KE6.8A VSK-S3-9U 150 0.1 4.7/400V P4KE12A VSK-S3-12U 150 0.1 4.7/400V P4KE20A VSK-S3-15U 150 0.1 4.7/400V P4KE20A VSK-S3-24U 150 0.1 4.7/400V P4KE30A Notes: Note: 1. Output filtering capacitors C1, C3 is electrolytic capacitors, 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 apacitor should be 80% or above. C2, C4 is ceramic capacitors , it is used to filter high frequency noise. TVS is a recommended component to protect post-circuits (when converter fails). 2. MOV is required for VSK-S3 models. Model: 471KD05, it is used to protect the device under surge. 3. It is recommended to connect FUSE, the parameter is 0.5A/250V slow blow. External input NTC is recommended to use D -14 or 10Ω/2W wire-round resistor. 4. If EMC performance is required, recommended to add “EMC filter” at the input end(see figure 2) C6:X capacitor, recommended parameter 0.1uF/275V; C7,C8:Y capacitor, recommended parameter 220pF/275V; NF: common model choke, recommended inductance is about 10mH-30mH. 5. Terminals 22 and 26 are internal rectification and filtering terminals. To protect the models further, it is recommended to connect an electrolytic capacitor C3 (it is recommended to be 4.7uF/400V). If operation voltage of the module is between 160~264VAC, C3 can be removed. 1. All specifications measured at Ta=25°C, humidity