* * * * * * * * Features Switching Regulator Efficiency up to 96%, no need for heatsinks 2A continuous output current Vin up to 32V Vout: 1.2V - 15V Wide operating temperature -40C to +70C at full load Continuous short circuit protection Pin compatible with TO220 linear regulators Positive to negative converter Description The R-78Bxx-2.0 series high efficiency switching regulators are ideally suited to replace 78xx linear regulators and are pin compatible. The efficiency of up to 96% means that very little energy is wasted as heat. Full power is available over a temperature range of -40C up to 70C without the need for heatsinks with their additional space and mounting costs. A high input voltage of up to 32VDC and output voltages from 1.2V up to 15V, low ripple and noise figures and a short circuit input current of typically only 50mA round off the specifications of this versatile converter series. DC/DC Converter R-78B-2.0 2.0 Amp SIP3 Single Output Selection Guide Part Number R-78B1.2-2.0 R-78B1.5-2.0 R-78B1.8-2.0 R-78B2.5-2.0 R-78B3.3-2.0 R-78B5.0-2.0 R-78B9.0-2.0 R-78B12-2.0 R-78B15-2.0 Input Voltage Range [VDC] 4.75 - 32 4.75 - 32 4.75 - 32 4.75 - 32 4.75 - 32 6.5 - 32 11 - 32 15 - 32 18 - 32 Output Voltage [VDC] 1.2 1.5 1.8 2.5 3.3 5 9 12 15 Output Efficiency @ full load Max. Capacitive Current @ min Vin@ max. Vin Load (1) [mA] [%][%] [F] 2000 87 72 3300 2000 90 79 3300 2000 91 80 3300 2000 92 84 2300 2000 92 86 1800 2000 94 90 820 2000 95 93 620 2000 96 94 470 2000 96 95 470 Notes: Note1: Max. cap load is tested by nominal input and full resisitive load IEC62368-1 certified EN62368-1 certified EN55032 compliant CB report Model Numbering R-78B__-2.0 Output Voltage www.recom-power.com Output Current REV.: 4/2019 I-1 R-78B-2.0 DC/DC Converter Series Specifications (measured @ Ta= 25C, nom. Vin, full load and after warm up unless otherwise specified) BASIC CHARACTERISTICS Parameter Condition Input Voltage Range 1.2Vout - 3.3Vout 5Vout 9Vout 12Vout 15Vout nom. Vin= 24VDC Min. Typ. Max. 4.75VDC 6.5VDC 11VDC 15VDC 18VDC 24VDC 32VDC Maximum Reverse Voltage 0V Inrush Current 2A Quiescent Current nom. Vin= 24VDC 2mA Vout= 1.5VDC 0.35W Internal Power Dissipation Start-up time 0.8W 10ms Rise Time 50s Internal Operating Frequency nom. Vin= 24VDC 460kHz Minimum Load 0% Vout 3.3VDC Vout 5VDC 20MHz BW Output Ripple and Noise (2) 50mVp-p 75mVp-p Notes: Note2: Measurements are made with a 100nF MLCC across output (low ESR) R-78B3.3-2.0 R-78B5.0-2.0 100 100 90 90 80 80 70 70 Efficiency [%] Efficiency [%] Efficiency vs. Load 60 50 4.75Vin 6Vin 9Vin 12Vin 15Vin 24Vin 32Vin 40 30 20 10 0 0 10 20 30 40 50 60 70 80 90 60 50 40 6.5Vin 12Vin 15Vin 24Vin 32Vin 30 20 10 0 100 0 10 20 30 40 50 60 70 80 90 100 Output Load [%] Output Load [%] Efficiency vs. Input Voltage R-78B5.0-2.0 100 100 90 90 80 80 70 70 Efficiency [%] Efficiency [%] R-78B3.3-2.0 60 50 40 60 50 40 30 30 20 20 10 10 0 4.75 9 13 17 21 25 29 0 32 Input Voltage [VDC] www.recom-power.com 6.5 10 14 18 22 26 30 32 Input Voltage [VDC] REV.: 4/2019 I-2 R-78B-2.0 DC/DC Converter Series Specifications (measured @ Ta= 25C, nom. Vin, full load and after warm up unless otherwise specified) REGULATIONS Parameter Condition Value Output Accuracy 100% load 2.0% typ. Line Regulation low line to high line, full load 0.5% typ. Load Regulation 0% to 100% load 1.0% typ. PROTECTIONS Parameter Condition Short Circuit Protection (SCP) Value below 100mW Short Circuit Input Current nom. Vin= 24VDC continuous, automatic recovery <5Vout 5Vout 50mA typ. 75mA typ. ENVIRONMENTAL Parameter Condition Operating Temperature Range Value without derating (see graph) -40C to +70C Maximum Case Temperature +105C Temperature Coefficient 0.02%/C typ. Operating Altitude 5000m Operating Humidity non-condensing 95% RH max. Pollution Degree PD2 Vibration 10-55Hz, 2G, 30min along X, Y and Z axis MTBF according to MIL-HDBK-217F, G.B. +25C 6349 x 103 hours Derating Graph (@ Chamber and natural convection 0.1m/s) 100 90 Output Load [%] 80 70 60 50 40 30 20 10 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 85 Ambient Temperature [C] www.recom-power.com REV.: 4/2019 I-3 R-78B-2.0 DC/DC Converter Series Specifications (measured @ Ta= 25C, nom. Vin, full load and after warm up unless otherwise specified) SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Standard Audio/video, information and communication technology equipment Safety requirements (CB Scheme) L0339m38-B1-L IEC62368-1: 2014, 2nd Edition EN62368-1: 2014 EAC RU-AT.49.09571 TP TC 004/2011 RoHS2+ RoHS 2011/65/EU + AM2015/863 EMC Compliance Condition Standard / Criterion with external components (see filter suggestion below) Electromagnetic compatibility of multimedia equipment - Emission requirements EN55032, Class A EN55032, Class B Information technology equipment - Immunity characteristics - Limits and methods of measurement EN55024:2010 Electromagnetic compatibility of multimedia equipment - Emission requirements EN55032: 2013, Class B ESD Electrostatic discharge immunity test Air 8kV; Contact 4kV IEC61000-4-2, Criteria A Radiated, radio-frequency, electromagnetic field immunity test 3 V/m IEC61000-4-3, Criteria A Fast Transient and Burst Immunity 0.5kV IEC61000-4-4, Criteria A Surge Immunity 0.5kV IEC61000-4-5, Criteria A 3V IEC61000-4-6, Criteria A 50Hz/ 1A/m IEC61000-4-8, Criteria A Immunity to conducted disturbances, induced by radio-frequency fields Power Magnetic Field Immunity EMC Filtering Suggestion according to EN55032 L1 R-78Bxx-2.0 +VIN +Vout +Vin GND C2 C1 +VOUT GND GND EN55022 C1 Class A 4.7F 50V MLCC 1206 Class B 10F 50V MLCC 1210 C2 L1 N/A 3.3H Choke 4.7F 50V MLCC 1206 10H Choke DIMENSION and PHYSICAL CHARACTERISTICS Parameter Type Value Material case potting PCB plastic, (UL94 V-0) silicone, (UL94 V-0) FR4, (UL94 V-0) Dimension (LxWxH) 11.5 x 8.5 x 17.5mm Weight 4.0g typ. continued on next page www.recom-power.com REV.: 4/2019 I-4 R-78B-2.0 DC/DC Converter Series Specifications (measured @ Ta= 25C, nom. Vin, full load and after warm up unless otherwise specified) Dimension Drawing (mm) embossed logo 8.5 Pin Connections Pin # Single 1 +Vin 2 GND 3 +Vout Marking 0.51 17.5 11.5 0.64+0.10/-0.05 4.10 0.64+0.10/-0.05 Tolerance: xx.x= 0.5mm xx.xx=0.25mm 2.54 Recommended Footprint Details Bottom View 1 2 3 1 2 3 5.08 2.00 3.21 Top View 2.54 INSTALLATION and APPLICATION Positive to Negative 0V C1 +Vin Vin R-78B-2.0 0V Vout GND C2 -Vout Part Number R-78B1.2-2.0 R-78B1.5-2.0 R-78B1.8-2.0 R-78B2.5-2.0 R-78B3.3-2.0 R-78B5.0-2.0 R-78B9.0-2.0 R-78B12-2.0 R-78B15-2.0 www.recom-power.com Input Voltage Range [VDC] 4.75 - 32 4.75 - 32 4.75 - 32 4.75 - 32 4.75 - 32 6.5 - 32 11 - 32 15 - 32 18 - 32 Output Voltage [VDC] -1.2 -1.5 -1.8 -2.5 -3.3 -5 -9 -12 -15 Output Current [mA] -1000 -1000 -1000 -1000 -1000 -1000 -1000 -1000 -1000 REV.: 4/2019 Efficiency @ full load @ min Vin@ max. Vin [%] [%] 86 86 74 87 76 88 79 89 83 89 86 90 90 91 91 92 92 93 External Capacitor [C1 / C2] 10F / 10F 10F / 10F 10F / 10F 10F / 10F 10F / 10F 10F / 10F 10F / 10F 10F / 10F 10F / 10F I-5 R-78B-2.0 DC/DC Converter Series Specifications (measured @ Ta= 25C, nom. Vin, full load and after warm up unless otherwise specified) PACKAGING INFORMATION Parameter Type Value Packaging Dimension (LxWxH) tube 520.0 x 25.1 x 10.6mm Packaging Quantity 42pcs Storage Temperature Range Storage Humidity -55C to +125C non-condensing 95% RH max. The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer. The products are not authorized for use in safety-critical applications without RECOM's explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications. www.recom-power.com REV.: 4/2019 I-6