C C S S O O R R w E E M M T T P P R R a L L R I I E E A A r V V N N A N N T T r Sixteenth brick format Features 4:1 input voltage range DC/DC Converter 2.25kV basic isolation Remote ON/OFF and trim pins Regulated UVLO, OTP, OVP, OCP and SCP Converter Efficiency up to 91% RPA50S-W Description 50Watt The RPA50S is a low cost 50W DC/DC converter in industry standard 1/16th brick format 3 1/16 Brick (33mm x 23mm) and pinning. The 4:1 input range covers 24V, 28V or 48V nominal input voltages and the output voltage options are 3.3V, 5V or 12V with +10%/-20% trim. Output power is 40W from 18-75V or 50W from 36-75V. The efficiency is particularly high (88-91%) to permit full load operation Single Output from -40C up to +54C ambient temperature with only free air convection and up to 85C with forced air cooling. The isolation voltage is 2.25kVDC/1 minute (basic insulation grade). Applications include demanding industrial power supplies, telecom and PoE circuits. Selection Guide Part nom. Input Output Output Efficiency Max. Capacitive (1) (2) Number Voltage Range Voltge Current max. typ. Load VDC VDC A % F RPA50S-483.3SW/P 18-75 3.3 15 90.5 10000 RPA50S-4805SW/P 18-75 5 10 91 5000 22++ RoHSRoHS REACHREACH RPA50S-4812SW/P 18-75 12 4.2 89 2200 compliantcompliant compliantcompliant 10 from 1010 from 10 Notes: E224736 Note1: Efficiency is tested at nominal input and full load a t +25C ambient Note2: Max. Cap Load is tested at nominal input and full resistive load Model Numbering UL60950-1 certified RPA50S- SW/P IEC/EN60950-1 certified Input Voltage Positive CTRL logic Output Voltage Single Ordering Examples RPA50S-4805SW/P = 48V Input, 5V Output, Single, Pos. CTRL function Specifications (measured Ta = 25C, nom. Vin, full load and after warm-up unless otherwise stated) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. Internal Input Filter Pi-Type Input Voltage Range nom. Vin = 48V 18VDC 48VDC 75VDC Input Surge Voltage 100ms 100VDC DC-DC ON 16VDC 17VDC 18VDC Under Voltage Lockout (UVLO) DC-DC OFF 15VDC 16VDC 17VDC 60 Input Current Range 18Vin 3.9A 3.3Vout 30mA 50 Quiescent Current 5Vout 40mA 12Vout 20mA 40 60 30 50 40 20 30 20 10 10 0 0 18 24 36 48 75 18 24 36 48 75 Input Voltage V Input Voltage V continued on next page www.recom-power.com REV.: 3/2020 PB-1 O O P P E a C C R R O O Y M M n D D O O U U t C C C C E E y T T R R S S Output Power W Output Power W RPA50S-W DC/DC Converter Series Specifications (measured Ta = 25C, nom. Vin, full load and after warm-up unless otherwise stated) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. Output Voltage Trimming refer to OUTPUT VOLTAGE TRIMMING -20% +10% Minimum Load 0% Power up 30ms Start-up Time Remote ON/OFF 30ms DC-DC ON Open or 2.4VDC < V < 18VDC CTRL 3.3 & 5Vout DC-DC OFF Short or 0VDC < V < 0.8VDC ON/OFF CTRL CTRL Positive Logic refer to ON/OFF CTRL DC-DC ON Open or 2VDC < V < 18VDC CTRL 12Vout DC-DC OFF Short or 0VDC < V < 0.8VDC CTRL Input Current of CTRL pin drive current I 1mA CTRL Standby Current DC-DC OFF I 6.5mA In 3.3 & 5Vout 580kHz Internal Operating Frequency 12Vout 440kHz 60mVp-p 3.3 & 5Vout (3) Output Ripple & Noise 5MHz to 20MHz BW. 12Vout 100mVp-p 150mVp-p Remote Sense 10% Notes: Note3: measured with 1F ceramic and 10F tantalum in parallel accross O/P RPA50S-483.3SW/P Efficiency vs. Output Load Power Dissipation vs. Output Load 100 10 90 9 80 8 70 7 60 6 50 5 40 4 30 3 18Vin 18Vin 36Vin 36Vin 20 2 48Vin 48Vin 10 1 75Vin 75Vin 0 0 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 Output Load % Output Load % RPA50S-4805SW/P Efficiency vs. Output Load Power Dissipation vs. Output Load 100 10 9 90 80 8 70 7 60 6 50 5 40 4 18Vin 30 3 18Vin 36Vin 2 36Vin 20 48Vin 48Vin 75Vin 10 1 75Vin 0 0 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 Output Load % Output Load % continued on next page www.recom-power.com REV.: 3/2020 PB-2 Efficiency % Efficiency % Power Dissipation W Power Dissipation W