* Efficiency up to 96%, no heatsinks required * Pin-out compatible with LM78XX linears * Low profile (L/W/H=11.5 x 8.5 x 17.5mm) * High input voltage range, up to 72V * Short circuit protection, thermal shutdown * Low ripple and noise * L" version with 90 pins * Positive to negative converter Features Switching Regulator DC/DC Converter R-78HB-0.5(L) Description The R-78HBxx-Series high efficiency, high input voltage 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 so there is no need for any heat sinks with their additional space and mounting costs. An input voltage range of up to 8:1 is unsurpassed by any other converter and allows the full stored energy utilization of standard and high voltage batteries. The fully protected output is ideal for industrial applications (especially for industry standard 24VDC bus supplies) and the L-Version with 90 pins allows direct replacement for laid-flat regulators where component height is at a premium. Low ripple and noise figures and a short circuit input current of typically only 15mA round off the specifications of this versatile converter series. Typical applications include telecommunication, automotive, industrial, aerospace and battery powered applications. 0.5 Amp SIP3 Single Output Selection Guide Part Number R-78HB3.3-0.5 R-78HB5.0-0.5 R-78HB6.5-0.5 R-78HB9.0-0.5 R-78HB12-0.5 R-78HB15-0.5 R-78HB24-0.3 Input Output Voltage Range Voltage [VDC] [VDC] 9 - 72 3.3 9 - 72 5.0 9 - 72 6.5 14 - 72 9.0 17 - 72 12 20 - 72 15 36 - 72 24 OutputEfficiency Current @ min Vin @ max. Vin [A] [%] [%] 0.5 82 76 0.5 87 81 0.5 91 84 0.5 92 86 0.5 94 89 0.5 95 91 0.3 96 92 Model Numbering R-78HB__- (L) Output Voltage Pinning (1) Output Current Notes: Note1: add suffix L" for 90 bent pins, e.g. R-78B5.0-1.0L IEC/EN60950-1 certified EN55032 compliant Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) BASIC CHARACTERISTICS Parameter Condition Min. Internal Input Filter Typ. Absolute Maximum Input Voltage Quiescent Current 75VDC nom. Vin= 48VDC 1mA Internal Power Dissipation Minimum Load Max. 1F capacitor 5mA 0.65W 2% (2) Notes: Note2: Operation under no load will not harm the converter, but specifications may not be met A minimum load of 10mA is recommended continued on next page www.recom-power.com REV.: 5/2019 I-1 R-78HBxx-0.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) Parameter Internal Operating Frequency Output Ripple and Noise Condition Min. nom. Vin= 48VDC 120kHz Max. 20mVp-p 60mVp-p 800kHz 20MHz BW (10 - 100% load) Absolute Maximum Capacitive Load Typ. 1 second start up, no external components <1 second start up + diode protection circuit 100F 6800F Switching Frequency vs. Load 800 Frequency [kHz] 400 200 24Vout 15Vout 12Vout 9Vout 6.5Vout 5Vout 3.3Vout 100 50 10 10 50 100 200 300 400 500 Output Current (mA) Ripple vs. Vin (full load) 100 50 90 45 80 40 70 35 60 30 50 24Vout 15Vout 12Vout 9Vout 6.5Vout 5Vout 3.3Vout 40 30 20 10 0 Ripple [mV] Efficiency [%] Efficiency vs. Vin (full load) 9 18 27 24Vout 15, 12Vout 9Vout 6.5Vout 5Vout 3.3Vout 25 20 15 10 5 0 36 45 54 63 72 9 18 27 36 45 54 63 72 Input Voltage [VDC] Input Voltage [VDC] continued on next page www.recom-power.com REV.: 5/2019 I-2 R-78HBxx-0.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) Ripple vs. Load (max. Vin) Efficiency vs. Load (max. Vin) 100 60 24Vout 15, 12Vout 9Vout 6.5Vout 5Vout 3.3Vout 90 50 70 40 60 50 24Vout 15Vout 12Vout 9Vout 6.5Vout 5Vout 3.3Vout 40 30 20 10 0 Ripple [mV] Efficiency [%] 80 0 10 20 30 40 50 60 70 80 90 30 20 10 0 100 0 10 20 30 Output Load [%] 40 50 60 70 60 24Vout 15, 12Vout 9Vout 6.5Vout 5Vout 3.3Vout 90 50 70 40 Ripple [mV] Efficiency [%] 80 60 50 40 24, 15Vout 12Vout 9Vout 6.5Vout 5Vout 3.3Vout 30 20 10 10 20 30 100 Ripple vs. Load (min. Vin) 100 0 90 Output Load [%] Efficiency vs. Load (min. Vin) 0 80 40 50 60 70 80 90 30 20 10 0 100 0 10 Output Load [%] 20 30 40 50 60 70 80 90 100 Output Load [%] REGULATIONS Parameter Condition Value Output Accuracy 100% load 2.0% typ / 3.0% max. Line Regulation low line to high line, 100% load 0.4% typ. / 1.0% max. Load Regulation Transient Response (3) 10% to 100% load 100% <-> 50% load 0.3% typ. / 0.6% max. 75mV typ. / 100mV max. Notes: Note3: Measurements are made with a 100F output capacitor www.recom-power.com REV.: 5/2019 I-3 R-78HBxx-0.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) PROTECTIONS Parameter Condition Short Circuit Protection (SCP) Value below 100mW Short Circuit Input Current continuous, automatic recovery +Vin nom. Vin= 24VDC Optional Diode Protection Circuit Add a blocking diode to Vout if current can flow backwards into the output, as this can damage the converter when it is powered down. Protection Circuit +Vout out 15mA typ. /+V25mA max. GND Optional Protection 1: Optional Protection 2: GND R-78HBxx-0.5 +Vin +Vin +Vout +Vout +Vin GND GND GND R-78HBxx-0.5 +Vin +Vin GND R-78HBxx-0.5 +Vin +Vout GND GND The diode can either be fitted across the device if the source is low impedance or fitted in series with the output (recommended). R-78HBxx-0.5 +Vin +VinR-78HBxx-0.5 +Vout +Vin +Vout GND GND +Vout= +Vout - 0.3V GND +V = +Vout out +Vout - 0.3V C1 GND GND GND GND To protect the converter during power-up, use C1=3.3F/100V if Vin>50V ENVIRONMENTAL Parameter Condition Operating Temperature Range Value with derating (see graph) -40C to +85C Maximum Case Temperature +100C Temperature Coefficient 0.015%/K Thermal Impedance 0.1m/s, vertical 60K/W Operating Altitude 2000m Operating Humidity non-condensing 95% RH max. Pollution Degree PD2 MTBF according to MIL-HDBK-217F, G.B. Derating Graph +25C +71C 7395 x 10 hours 1242 x 103 hours 3 100 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] www.recom-power.com REV.: 5/2019 I-4 R-78HBxx-0.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Information Technology Equipment, General Requirements for Safety Standard IEC60950-1:2005, 2nd Edition + AM 2:2013 EN60950-1:2006 + AM 2:2013 1603123 EAC RU-AT.49.09571 TP TC 004/2011 RoHs 2+ RoHS 2011/65/EU + AM2015/863 EMC Compliance Condition Electromagnetic compatibility of multimedia equipment Emission requirements Standard / Criterion EN55032, Class A EN55032, Class B with external components ESD Electrostatic discharge immunity test 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) silicone, (UL94 V-0) Package Dimension (LxWxH) 11.5 x 8.5 x 17.5mm Package Weight 4g typ. Dimension Drawing (mm) with suffix L" bent pins 11.5 17.5 19.0 8.5 Marking 0.70+0.10/-0.05 0.25 0.05 1 2 3 1 2 3 1 2 3 Top View 5.08 2.54 5.08 4.10 Top View 2.00 3.21 Bottom View 2.54 Bottom View Recommended Footprint Details 2.00 Recommended Footprint Details 6.10 2.54 4.10 0.70 +0.10/-0.05 1.50 3 -9 90 0.51 0.51 Marking Tolerance: xx.x= 0.5mm xx.xx=0.25mm 0.250.05 8.5 17.5 11.5 Pin Connections Pin # Single 1 +Vin 2 GND 3 +Vout embossed logo embossed logo 1 2 3 2.54 www.recom-power.com REV.: 5/2019 I-5 R-78HBxx-0.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) INSTALLATION AND APPLICATION Positive to Negative Converter C1 and C2 are required and should be fitted close to the converter pins. +Vin 1 R-78HBxx-0.5 Maximum capacitiv load including C2 is 100F 3 2 C2 C1 Pin Connections Pin # Negative Positive 1 +Vin +Vin 2 -Vout GND 3 GND +Vout -Vout GND GND +Vin 1 R-78HBxx-0.5 Selection Guide - Negative Output 1 2 3 3 2 C2 C1 Part Number GND R-78HB3.3-0.5 R-78HB5.0-0.5 R-78HB6.5-0.5 R-78HB9.0-0.5 R-78HB12-0.5 R-78HB15-0.5 R-78HB24-0.3 Input Output Voltage Range Voltage [VDC] [VDC] 15 - 65 -3.3 15 - 65 -5.0 15 - 65 2 -6.5 1 3 15 - 62 -9.0 R-78HBxx-0.5 15 - 59 -12 15 - 56 -15 15 - 48 -24 +Vin OutputEfficiency External Capacitor -Vout Current @ min Vin @ max. Vin C1 C2 (4) [A] [%][%] GND -0.4 7875 1F/100V22F/6.3V -0.4 8280 1F/100V22F/10V -0.3 84 82 1F/100V 10F/10V +Vout -0.2 87 85 1F/100V 10F/16V -0.2 8886 1F/100V10F/25V -0.2 8987 1F/100V10F/25V -0.2 8987 1F/100V10F/35V 1 R-78HBxx-0.5 3 Notes: 2 Note4: Maximum Capacitive Load including C2 is 100F C2 C1 -Vout GND GND Dual Output (two Converters) with Negative Output +Vin 1 R-78HBxx-0.5 3 2 C2 C1 -Vout GND GND 2 1 R-78HBxx-0.5 3 +Vout continued on next page www.recom-power.com REV.: 5/2019 I-6 R-78HBxx-0.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) High Input Voltage Multiple Output Supply Revese Polarity Protection +Batt R-78HBxx-0.5 +Vin +12V @ 100mA +Vout GND R-785.0-1.0 +Vin Cstorage Brown out Protection 10uF +Vout +5V @ 850mA GND -Batt 0V Com * Wide input range 18V to 72V - can be used with 24V, 48V or 60V batteries * +12V outputs for interface and display electronics * +5V high current output for digital electronics * Further decoupling filtering may be necessary between the converters PACKAGING INFORMATION Parameter Packaging Dimension (LxWxH) Packaging Quantity Type Value without suffix with suffix "L" tube tube Storage Temperature Range 520.0 x 25.1 x 10.6mm 520.0 x 26.1 x 15.8mm 42pcs -55C to +125C Storage Humidity 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.: 5/2019 I-7