Features * * * * Efficiency up to 93%, no need for heatsinks High voltage input range, up to 50V Short circuit protection, thermal shutdown All-in-one solution, no external components required * IEC/EN60950-1 + AM:2 certified Switching Regulator DC/DC Converter R-78HB/W Description The R-78HBxx/W series high efficiency, high input voltage switching regulators are ideally suited to replace 78xx linear regulators. The efficiency of up to 93% means that very little energy is wasted as heat so there is no need for any heat sinks with their additional space and mounting costs. A wide input voltage range allows the full stored energy utilization of standard 12, 24 and 36V batteries as well as COB LED drivers. No external components are required to make a complete regulated, shortcircuit protected supply. A built-in protection diode allows high capacitive loads. Typical applications include Auxiliary fan CV power supplies powered from CC LED drivers, industrial, aerospace and battery powered applications. 0.5 Amp SIP3 Wired Single Output Selection Guide Part Number R-78HB5.0-0.5/W R-78HB12-0.5/W Input Voltage Range (2) [VDC] 9-72 17-72 Output Voltage [VDC] 5.0 12 Output Current [A] 0.5 0.5 Efficiency typ @ min Vin. [%] 86 93 Max. Capacitive Load (1) [F] 100/6800 100/6800 Notes: Note1: Max. Cap Load is tested at nominal input and full resistive load with 1 second start-up time and no external components = 100F, with <1s start-up time = 6800F Model Numbering R-78HB__-0.5/W Output Voltage Wired Output Current IEC60950-1 certified EN60950-1 certified EN55032 compliant Specifications (measured @Ta= 25C, full load, nominal input voltage and after warm-up) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. nom. Vin = 48VDC 9VDC 48VDC 72VDC nom. Vin = 48VDC, 10% load 1mA Input Voltage Range (2) Quiescent Current 5mA Internal Power Dissipation 0.65W Internal Operating Frequency Minimum Load full load 120kHz 800kHz 10mA (3) 20MHz BW limited Output Ripple and Noise 20mVp-p 60mVp-p Typical Application Circuit R-78HBxx-0.5/W +VIN -VIN 3.3F/100V required if VIN= >50V +VOUT -VOUT continued on next page www.recom-power.com REV.: 3/2018 I-1 R-78HB/W DC/DC Converter Series Specifications (measured @ Ta= 25C, full load, nominal input voltage and after warm-up) Notes: Note2: The converter has built in soft start circuit. Rapidly changing the input voltage from VINmin to VINmax can bypass this circuit and damage the converter Note3: Operation under no load will not damage the devices, however they may not meet all specifications A minimum load of 10mA is recommended Efficiency vs. Load R-78HB12-0.5/W 100 100 90 90 80 80 Efficiency [%] Efficiency [%] R-78HB5.0-0.5/W 70 60 50 40 60 50 40 30 30 12Vin 24Vin 36Vin 48Vin 20 10 0 70 0 10 20 24Vin 36Vin 48Vin 20 10 30 40 50 60 70 80 90 100 0 0 10 20 30 Output Load [%] 40 50 60 70 80 90 100 Output Load [%] REGULATIONS Parameter Condition Value Output Voltage Accuracy 100% load 2.0% typ. / 3.0% max. Line Voltage Regulation Vin= min. to max., full load Load Voltage Regulation 0.4% typ. / 1.0% max. 10% to 100% load Transient Response 0.3% typ. / 0.6% max. with 100F output capacitor, 100% <-> 50% load 75mV typ. / 100mV max. PROTECTIONS Parameter Condition Value Internal Input Filter 1F capacitor Short Circuit Protection (SCP) continuous, automatic recovery Short Circuit Input Current 15mA typ. / 25mA max. Optional Protection Circuit internal structure +VIN Controller GND GND www.recom-power.com +VOUT REV.: 3/2018 I-2 R-78HB/W DC/DC Converter Series Specifications (measured @ Ta= 25C, full load, nominal input voltage and after warm-up) ENVIRONMENTAL Parameter Condition Operating Temperature Range Value with derating @ natural convection 0.1m/s (see graph) -40C to +85C Maximum Case Temperature +100C Thermal Impedance 55C/W typ. Operating Altitude 2000m Operating Humidity non-condensing 95% RH max. Pollution Degree PD2 MTBF according to MIL-HDBK-217F, G.B. Derating Graph 7395 x 103 hours 1242 x 10 hours +25C +71C 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 71 85 Ambient Temperature [C] SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Information Technology Equipment, General Requirements for Safety EAC 1603123 RU-AT.49.09571 RoHs 2+ ESD Electrostatic discharge immunity test IEC60950-1:2005, 2nd Edition + AM 2:2013 EN60950-1:2006 + AM 2:2013 TP TC 004/2011 RoHS 2011/65/EU + AM2015/863 EMC Compliance Electromagnetic compatibility of multimedia equipment Emission requirements Standard Condition with external components Standard / Criterion EN55032, Class B Air 8kV, Contact 4kV EN61000-4-2, Criteria A 3V/m EN61000-4-3, Criteria A Radiated, radio-frequency, electromagnetic field immunity test DIMENSION and PHYSICAL CHARACTERISTICS Parameter Type Value Material case potting non-conductive black plastic, (UL94 V-0) epoxy, (UL94 V-0) Package Dimension (LxWxH) 12.1 x 9.7 x 24.0mm Package Weight 4.5g continued on next page www.recom-power.com REV.: 3/2018 I-3 R-78HB/W DC/DC Converter Series Specifications (measured @ Ta= 25C, full load, nominal input voltage and after warm-up) Dimension Drawing (mm) 12.1 Top View embossed logo 9.7 # 1 2 3 Marking 0.51 24.0 Wire/cable information Function Wire color Type +Vin red UL-1430 GND black UL-1430 +Vout brown UL-1430 AWG 22 22 22 Strands 17/0.16 17/0.16 17/0.16 955 Tolerance: xx.x= 0.5mm xx.xx= 0.25mm 103 O0.76 O1.56 Bottom View 1 2 3 APPLICATION Standard Application LED Driver AC 18V LED out 1050mA 980mA Constan Current DC R-78 70mA R-78HB12/W FAN 12V/100mA Constan Voltage FAN PACKAGING INFORMATION Packaging Dimension (LxWxH) cardboard box Packaging Quantity 25pcs Storage Termperature Range Storage Humidity 140.0 x 130.0 x 65.0mm -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.: 3/2018 I-4