SXN15 48V SERIES. Dual output TÜV. High Efficiency DC/DC Converters

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Lenard Cain
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with ETS 3 19-1-3/2-3 Complies with ETS 3 132-2 (input voltage and current requirements) Complies with ETS 3 386-1 Available RoHS compliant The SXN15 is a new high efficiency open frame isolated 15

1 SXN15 48V SERIES Dual output High efficiency topology, 86% typical at 5V/3.3V Wide operating temperature, up to and exceedingly 65ºC (natural convection) 9% to 11% output trim No minimum load Overvoltage protection Remote on/off Approvals to EN695 and UL/cUL195 Complies with ETS /2-3 Complies with ETS (input voltage and current requirements) Complies with ETS Available RoHS compliant The SXN15 is a new high efficiency open frame isolated 15 Watt converter series. The first two models in the series feature an input voltage range of 33 to 75VDC and are available in output voltages of 5V/3.3V and 3.3V/2.5V. The output voltage on each model is adjustable from 9% to 11% of the nominal value. Typical efficiencies for the models are 86% for the 5V/3.3V and 85% for the 3.3V/2.5V version. The SXN15 series has a remote on/off capability with active 'HI' and active 'LO' options available. Overcurrent and overvoltage protection features are included as standard. With full international safety approval including EN695 and cul195, the SXN15 reduces compliance costs and time to market. [ 2 YEAR WARRANTY ] TÜV 1 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

2 SXA1 Series Stresses in excess of the maximum ratings can cause permanent damage to the device. Operation of the device is not implied at these or any other conditions in excess of those given in the specification. Exposure to absolute maximum ratings can adversely affect device reliability. Absolute Maximum Ratings Input voltage - continuous V in (cont) V DC V in(+) - V in(-) Input voltage - peak/surge V surge VDC 2s max, non-repetitive Operating temperature T op ºC Measured at thermal reference points, see Note 1 Storage temperature T storage ºC Output power (5V/3.3V) Pout (max) 15 W Even when trimmed up by 1% Output power (3.3V/2.5V) P out (max) W Even when trimmed up by 1% All specifications are typical at nominal input Vin = 48V, full load under any resistive load combination at 25ºC unless otherwise stated. Input Characteristics Input voltage - operating V in (oper) V DC Input current - no load l in madc V in (min) - V in (max), enabled Input current - Quiescent l in (off) 2 25 madc Converter disabled Input voltage variation dv/dt 5 V/ms Complies with ETS3 132 Part 4.4 Inrush current (i 2 t) linrush 3 µa 2 s Complies with ETS3 132 Part 4.7, with recommended LISN Inrush current ratio I t /I m 19.5 Complies with ETS3 132 Part 4.7, with recommended LISN Input ripple rejection 45 db Frequency <1 khz Input fuse 2 A Slow Blow/Antisurge HRC recommended 2V Rating Turn On/Off Input voltage - turn on V in (on) V DC Input voltage - turn off V in (off) V DC Hysteresis 3 V DC Turn on delay - enabled, T delay msec With the enable signal asserted, then power applied (power) this is the time from when the input voltage reaches the minimum specified operating voltage until the output voltage is within the total regulation band Turn on delay - power T delay msec V in = V in (nom), then enabled. applied, then enabled (enable) This is the time taken until the output voltage is within the total error band Rise time T rise.6 1. msec From 1% to 9%; full resistive load, no external capacitance 2 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

3 Signal Electrical Interface Characteristic - Signal Name Symbol Min Typ Max Units Notes and Conditions At remote/control ON/OFF pin See Notes 2 and 3 Open Collector or Equivalent See Application Note 116 for compatible remote on/off details Control pin open circuit voltage V ih V I ih = µa; open circuit voltage High level input voltage V ih 2 75 V Converter guaranteed ON when control pin is greater than V ih (min) High level input current I ih 1 µa Current flowing into control pin when pin is pulled high (max. at V ih = 75V) Acceptable high level I ih (leakage) -5 µa Acceptable leakage current from leakage current signal pin into the open collector driver (neg = from converter) Low level input voltage V ii 1.2 V Converter guaranteed off when control pin is less than V il (max) Low level input current I ii -1.4 ma V il =.4 V Low level input current I il (max) -1.5 ma V ii =. V; Reliability and Service Life Mean time between failure MTBF > 6, Hours MIL-HDBK-217F, V in = V in (nom) ; I out = I out (max); ambient 25ºC; ground benign environment Mean time between failure MTBF > 1,5, Hours per Bellcore TR-NWT-332 Issue 3, ground benign, temp. = 4ºC, V in = V in (nom), I out = I out (max) Mean time between failure MTBF 1,79, Hours Demonstrated. Expected service life Years Isolation Input to output test voltage 15 V DC Test duration 1s Input to output capacitance 1 pf Input to output resistance 1 MΩ Measured with 5 V DC Input to output insulation system Operational 3 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

4 SXA1 Series Other Specifications Switching frequency F sw 265 khz Fixed frequency (all other models) Weight 12 g Environmental Specifications Thermal performance ºC See Notes 1, 4 and individual derating curves Type Parameter Reference Test Level Notes and Conditions Air temperature Low IEC ºC All characteristics and parameters High IEC ºC extracted from ETS 3 19 Change IEC ºC to +65ºC classes 3.1, 3.2, 3.3, 3.4 and 3.5 T max. = +65ºC for T3.4 Relative humidity Low 1% High IEC % Condensation IEC to 1% Vibration IEC Class 3M5 Freq. velocity IEC Hz 5mm/s Freq. acceleration IEC Hz 1g Shock IEC Class 3M5 Acceleration IEC g Performance criteria: NP: Normal Performance: EUT shall withstand applied test and operate within relevant limits as specified without damage RP: Reduced Performance: EUT shall withstand applied test. Reduced performance is permitted within specified limits, resumption to normal performance shall occur at the cessation of the test LFS: Loss of Function (self recovery): EUT shall withstand applied test without damage, temporary loss of function permitted during test Unit will self recover to normal performance after test Referenced ETSI standards: ETS table 5 (1997): Public telecommunication network equipment, EMC requirements ETS (1996): Power supply interface at the input to telecommunication equipment: Part 2 operated by direct current (DC) ETR 283 (1997): Transient voltages at interface A on telecommunication direct current (DC) power distributions EMC Electromagnetic Compatibility Phenomenon Port Standard Test level Criteria Notes and conditions Immunity: ESD Enclosure EN kV contact As per ETS table 5 8kV air EFT DC power EN kV As per ETS table 5 4kV Signal EN kV As per ETS table 5 2kV Radiated field Enclosure EN V/m As per ETS table 5 Conducted DC power EN V As per ETS table 5 Signal EN V Signal line assumed < 3m in length Input transients DC power ETS ETR File Name: lf_sxn15d.pdf Rev: 29 Mar 26

5 EMC Electromagnetic Compatibility Phenomenon Port Standard Test level Criteria Notes and conditions Emission: Conducted DC power EN5522 Level A With recommended external filter for compliance bandwidth 2 khz to 3 MHz, as per ETS See Application Note 116 for details EN5522 Level B With recommended external filter for compliance bandwidth 2 khz to 3 MHz, as per ETS See Application Note 116 for details Signal EN5522 Level B Bandwidth 15kHz to 3MHz, as per ETS Radiated EN5522 Level B Bandwidth 3 MHz to 1 GHz, as per ETS Standards Compliance List Standard Category EN695 2 UL/cUL 195 3rd edition TÜV Rheinland EN695:2 Safety Agency Approvals Characteristic UL/cUL 195 File Number TÜV Rheinland Certificate No. E R Material Ratings Characteristic - Signal Name Notes and Conditions Flammability rating Material type UL94V- FR4 PCB Model Numbers Model Input Output Overvoltage Output Current Typical Number Voltage Voltage Protection (Max.) Efficiency SXN15-48D5-3V3J VDC 5V/3.3V 6.2V/4.2V 3A/4.5A 86% SXN15-48D3V3-2V5J VDC 3.3V/2.5V 4V/3V 3.4A/4.5A 85% RoHS Compliance Ordering Information The J at the end of the partnumber indicates that the part is Pb-free (RoHS 6/6 compliant). TSE RoHS 5/6 (non Pb-free) compliant versions may be available on special request, please contact your local sales representative for details. 5 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

6 SXA1 Series SXN15-48D5-3V3J Model Input Characteristics Input current - operating I in A DC V in = V in (nom) ; I out = I out (max.) ; V o = V o (nom) Input current - maximum I in (max.) A DC V in = V in (min) ; I out = I out (max.) ; V o = V o (nom) (measured at converter) Reflected ripple current I in (ripple) 1.8 ma RMS I out = I out (max.), measured 5 ma pk-pk with external filter. See Application Note 116 details Input capacitance - internal C input 1.5 µf Internal to converter filter Input capacitance - external C bypass µf Recommended customer bypass added capacitance SXN15-48D5-3V3J Model Electrical Characteristics - O/P Nominal set-point voltage Vo (nom) 5V V DC V in = V in (nom) ; I out = I out (nom) Vo (nom) 3.3V V DC Worst case condition over line, load, temperature and life Total regulation band Vo 5V V DC For all line, static load and Vo 3.3V V DC temperature until end of life Output current continuous Lout 5V 3. A DC Total output power must not Lout 3.3V 4.5 A DC exceed 15W Output current - short circuit I sc 5V 5 6 A rms Continuous, unit auto recovers I sc 3.3V A rms from short, V o < 1mV Output voltage - noise V p-p 5V 6 1 mv pk-pk Measurement bandwidth 2 MHz V rms 5V 2 3 mv rms See Application Note 116 for V p-p 3.3V 8 12 mv pk-pk measurement set-up details V rms 3.3V mv rms Maximum power split 75%/25% Cross regulation V cross 5V mv V cross 3.3V mv 6 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

7 SXN15-48D5-3V3J Model Electrical Characteristics - O/P Load transient response - (V 1 ) V dynamic 18 mv Peak deviation for 5% to 75% peak deviation (V 2 ) 1 step load, di/dt = 1 ma/µsec Load transient response - T recovery 1 µsec Settling time to within 1% of recovery output settling point voltage for 5% to 75% step load External load capacitance C ext 1, µf SXN15-48D5-3V3J Model Protection and Control Features Overvoltage clamp voltage V ov 5V V DC Non-latching. See Vov 3.3V V DC Application Note 116 for details Overcurrent limit inception I oc 5V A DC V o = 9% of V o (nom) I oc 3.3V A DC V o = 9% of V o (nom) Output voltage trim range 11 % Trim up (% of V o nom ) 9 % Trim down (% of V o nom ) See Application Note 116 for details of trim equations and trim curves Open sense voltage V DC No sense option SXN15-48D5-3V3J Model Efficiency Efficiency η % I out 5V = 5% Iout (max), I out 3.3V = 5% Iout (max), V in = V in (nom) Efficiency η % I out 5V = 25% I out (max), I out 3.3V = 25% I out (max), V in = V in (nom) 7 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

8 SXA1 Series SXN15-48D3V3-2V5J Model Input Characteristics Input current - operating I in ADC V in = V in (nom) ; P out = P out SXA1 (max.) Series ; 5% each output Input current - maximum I in (max.) ADC V in = V in (min) ; P out = P out (max.) ; 5% each output Reflected ripple current I in (ripple) 1.8 ma RMS I out = I out (max.), measured 5 ma pk-pk with external filter. See Application Note 116 details Input capacitance - C input 1.5 µf Internal to converter internal filter Input capacitance - C bypass µf Recommended customer External bypass added capacitance SXN15-48D3V3-2V5J Model Electrical Characteristics - O/P Nominal set-point voltage Vo (nom) 3.3V V DC V in = V in (nom) ; I out = I out (nom) Vo (nom) 2.5V V DC Worst case condition over line, load, temperature and life Total regulation band Vo 3.3V V DC For all line, static load and Vo 2.5V V DC temperature until end of life Output current continuous Lout 3.3V 3. A DC Total output power must not Lout 2.5V 4.5 A DC exceed 11.25W Output current - short circuit I sc 3.3V A rms Continuous, unit auto recovers I sc 2.5V A rms from short, V o < 1mV Output voltage - noise V p-p 3.3V 9 13 mv pk-pk Measurement bandwidth 2 MHz V rms 3.3V 3 45 mv rms See Application Note 116 for V p-p 2.5V 1 14 mv pk-pk measurement set-up details V rms 2.5V 35 5 mv rms Maximum power split 75%/25% Cross regulation V cross 3.3V mv V cross 2.5V mv 8 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

9 SXN15-48D3V3-2V5J Model Electrical Characteristics - O/P Load transient response - (V 1 ) V dynamic 15 mv Peak deviation for 5% to 75% peak deviation (V 2 ) 1 step load, di/dt = 1 ma/µsec Load transient response - T recovery 1 µsec Settling time to within 1% of recovery output settling point voltage for 5% to 75% step load External load capacitance C ext 1, µf SXN15-48D3V3-2V5J Model Protection and Control Features Overvoltage clamp voltage V ov V DC Non-latching Vov V DC See Application Note 116 Overcurrent limit inception I oc A DC V o = 9% of V o (nom) I oc A DC Output voltage trim range 11 % Trim up (% of V o nom ) 9 Trim down (% of V o nom ) See Application Note 116 for details of trim equations and trim curves Open sense voltage V DC No sense feature SXN15-48D3V3-2V5J Model Efficiency Efficiency η % I out 3.3V = 5% Iout (max), I out 2.5V = 5% Iout (max), V in = V in (nom) Efficiency η 78 8 % I out 3.3V = 25% I out (max), I out 2.5V = 25% I out (max), V in = V in (nom) 9 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

10 SXE15-48D3V3-2V5J Model SXN15 Dual Series SXA1 Series OUTPUT CURRENT (%) AMBIENT TEMPERATURE ( C) 33Vin - 75Vin 36Vin - 6Vin OUTPUT CURRENT (%) AMBIENT TEMPERATURE ( C) 33Vin - 75Vin 36Vin - 6Vin Figure 1: Derating Curve Load Condition 3V3-1% (Still Air) Figure 2: Derating Curve Load Condition 3V3-5% 2V5-5% (Still Air) 12 OUTPUT CURRENT (%) AMBIENT TEMPERATURE ( C) 33Vin - 75Vin 36Vin - 6Vin POWER DISSIPATION (%) AMBIENT TEMPERATURE ( C) Natural Convection Simulation 1LFM 2LFM 3LFM 4LFM Figure 3: Derating Curve Load Condition 3V3-25% 2V5-75% (Still Air) Figure 4: Derating Curve with Airflow for 1%-% Load Split POWER DISSIPATION (%) AMBIENT TEMPERATURE ( C) Natural Convection Simulation 1LFM 2LFM 3LFM 4LFM POWER DISSIPATION (%) AMBIENT TEMPERATURE ( C) Natural Convection Simulation 1LFM 2LFM 3LFM 4LFM Figure 5: Derating Curve with Airflow for 7%-3% Load Split Figure 6: Derating Curve with Airflow for 5%-5% Load Split 1 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

11 SXE15-48D3V3-2V5J Model SXN15 Dual Series POWER DISSIPATION (%) AMBIENT TEMPERATURE ( C) Natural Convection Simulation 1LFM 2LFM 3LFM 4LFM POWER DISSIPATION (%) AMBIENT TEMPERATURE ( C) Natural Convection Simulation 1LFM 2LFM 3LFM 4LFM Figure 7: Derating Curve with Airflow for 3%-7% Load Split Figure 8: Derating Curve with Airflow for %-1% Load Split OUTPUT CURRENT (A) OUTPUT CURRENT (A) Figure 9: V-1 Characteristic over Input Line (3V3 Output) Figure 1: V-1 Characteristic Over Input Line (2V5 Output) EFFICIENCY (%) INPUT VOLTAGE (V) EFFICIENCY (%) #1 1%, #2 % #1 5%, #2 5% #1 %, #2 1% Norm Line Iout1 GOES FROM MAX TO MIN AS Iout2 GOES FROM MIN TO MAX Figure 11: Efficiency vs. Line Figure 12: Cross Efficiency 11 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

12 SXE15-48D3V3-2V5J Model SXN15 Dual Series SXA1 Series EFFICIENCY (%) % 5% 1% OUTPUT POWER, % TO 1% (#1 % TO 5% + #2 % TO 5%) Norm Line Vin Figure 13: Efficiency vs. Load Figure14: Typical Start-up (Vout1) Vin Signal TIME (msec) Figure 15: Typical Start-up (Vout2) Figure 16: Remote On/Off Control (Vout1) Signal VOLTAGE (2mV/Div) TIME (1. µsec/div) Figure 17: Remote On/Off Control (Vout2) Figure 18: Output Ripple (Vout1) 12 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

13 SXE15-48D3V3-2V5J Model SXN15 Dual Series VOLTAGE (2mV/Div) TIME (1. µsec/div) Output #1 Output #2 Signal Figure 19: Output Ripple (Vout2) Figure 2: Typical Transient Response 75%-5% Load Step Change Output #1 Output #2 Signal Vout1 (V) Iout2 (A), 1% <---> % Iout1 (A), % <---> 1% Vout2 (V) #1, 1% Power #2, 1% Power Figure 21: Typical Transient Response 5%-75% Load Step Change Figure 22: Cross Regulation at Pout Max File Name: lf_sxn15d.pdf Rev: 29 Mar 26

14 SXE15-48D5-3V3J Model SXN15 Dual Series OUTPUT CURRENT (%) AMBIENT TEMPERATURE ( C) 33Vin - 75Vin 36Vin - 6Vin OUTPUT CURRENT (%) AMBIENT TEMPERATURE ( C) 33Vin - 75Vin 36Vin - 6Vin Figure 23: Derating Curve Load Condition 5V-1% (Still Air) Figure 24: Derating Curve Load Condition 5V-5% 3V3-5% (Still Air) 12 OUTPUT CURRENT (%) AMBIENT TEMPERATURE ( C) 33Vin - 75Vin 36Vin - 6Vin POWER DISSIPATION (%) AMBIENT TEMPERATURE ( C) Natural Convection Simulation 1LFM 2LFM 3LFM 4LFM Figure 25: Derating Curve Load Condition 5V-25% 3V3-75% (Still Air) Figure 26: Derating Curve with Airflow for 1%-% Load Split POWER DISSIPATION (%) Natural Convection Simulation 1LFM 2LFM 3LFM 4LFM POWER DISSIPATION (%) Natural Convection Simulation 1LFM 2LFM 3LFM 4LFM AMBIENT TEMPERATURE ( C) AMBIENT TEMPERATURE ( C) Figure 27: Derating Curve with Airflow for 7%-3% Load Split Figure 28: Derating Curve with Airflow for 5%-5% Load Split 14 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

15 SXE15-48D5-3V3J Model SXN15 Dual Series SXA1 Series POWER DISSIPATION (%) AMBIENT TEMPERATURE ( C) Natural Convection Simulation 1LFM 2LFM 3LFM 4LFM POWER DISSAPATION (%) AMBIENT TEMPERATURE ( C) Natural Convection Simulation 1LFM 2LFM 3LFM 4LFM Figure 29: Derating Curve with Airflow for 3%-7% Load Split Figure 3: Derating Curve with Airflow for %-1% Load Split OUTPUT CURRENT (A) OUTPUT CURRENT (A) Figure 31: V-1 Characteristic over Input Line (5V Output) Figure 32: V-1 Characteristic Over Input Line (3V3 Output) EFFICIENCY (%) INPUT VOLTAGE (V) EFFICIENCY (%) #1 1%, #2 % #1 5%, #2 5% #1 %, #2 1% Iout1 GOES FROM MAX TO MIN AS Iout2 GOES FROM MIN TO MAX Figure 33: Efficiency vs. Line Figure 34 Cross Efficiency 15 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

16 SXE15-48D5-3V3J Model SXN15 Dual Series EFFICIENCY (%) % 5% 1% OUTPUT POWER, % TO 1% (#1 % TO 5% + #2 % TO 5%) Vin Figure 35: Efficiency vs. Load Figure 36: Typical Start-up (Vout1) Vin Signal Figure 37 Typical Start-up (Vout2) Figure 38: Remote On/Off Control (Vout1) Signal VOLTAGE (2mV/Div) TIME (1. µsec/div) Figure 39: Remote On/Off Control (Vout2) Figure 4: Output Ripple (Vout1) 16 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

17 SXE15-48D5-3V3J Model SXN15 Dual Series VOLTAGE (2mV/Div) TIME (1. µsec/div) Output #1 Output #2 Signal Figure 41: Output Ripple (Vout2) Figure 42: Typical Transient Response 75%-5% Load Step Change Output #1 Output #2 Signal Vout1 (V) Iout2 (A), 1% <---> % Iout1 (A), % <---> 1% Vout2 (V) #1, 1% Power #2, 1% Power Figure 43: Typical Transient Response 5%-75% Load Step Change Figure 44: Cross Regulation at Pout Max File Name: lf_sxn15d.pdf Rev: 29 Mar 26

18 SXA1 Series 1.95 (48.39) All Dimensions in Inches [mm] TOP VIEW 1.1 (25.65) SIDE VIEW.335 (8.51).72 (1.83) 1.11 (2.79).82 (2.83).2 (.51) (3.5).7 (1.78) Tolerance: ±.15 (±.38) Recommended Land & Hole Pattern BOTTOM VIEW.84 (21.37).197 (5.) (26.19) (5.).15 (2.67).32 (7.67) (28.85) (37.67) 1.68 (42.67) (25.91).347 (8.81).8 (2.32).13 (3.3) (43.31).11 (2.79) Pin Connections Pin No. Function 1 V1+ 2 Com 3 V2+ 4 Trim 5 N/C 6 N/C 7 N/C 8 On/Off 9 N/C 1 Vin - 11 Vin + Figure 45: Dimensions and Pinout 18 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

19 Note 1 Hot spot temperature is defined as the highest temperature measured at any one of the specified temperature hotspot checkpoints. See Figure 3: Hotspot temperature check points. Note 2 The control pin is referenced to Vin-. Note 3 The SXN15 features Active High Remote ON/OFF as standard. An Active Low Remote ON/OFF version is also available. To order the Active Low version of the SXN15-48D5-3V3J please add the suffix -R towards the end of the part number, i.e. SXN15-48D5-3V3-RJ. As part numbers cannot exceed 18 characters when ordering the Active Low version of the SXN15-48D3V3-2V5J please add the suffix R towards the end of the part number, i.e. SXN15-48D3V3-2V5RJ. Figure 46: Hot Spot Locations on all Models Note 4 Thermal reference set up: Unit mounted centrally on a 2mm x 24 mm testboard. Testboard is mounted vertically in a fully enclosed 3mm x 3mm x 3mm testbox. Ambient temperature measured at the bottom of the textbox. Altitude sea level. For test details and recommended set-up see Application Note 116. CAUTION: Hazardous internal voltages and high temperatures. Ensure that unit is accessible only to trained personnel. The user must provide the recommended fusing in order to comply with safety approvals File Name: lf_sxn15d.pdf Rev: 29 Mar 26

20 NORTH AMERICA EUROPEAN LOCATIONS IRELAND AUSTRIA FAR EAST LOCATIONS sales.asia@artesyn.com HONG KONG Longform Datasheet Artesyn Technologies The information and specifications contained in this datasheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein. 2 File Name: lf_sxn15d.pdf Rev: 29 Mar 26

0.8V Vin Single output

0.8V Vin Single output SIL15E-12V SERIES 0.8V - 3.63Vin Single output 15A Current rating Input voltage range: 10.0V - 14.0V Output voltage range: 0.8V - 3.63V Ultra high efficiency: 94% @ 12Vin and 3.3Vout Extremely low internal