B70SR24125A/B/C/D 24V Output DC/DC Converter, Box Type Package FEATURES Wide input voltage range, 36~106V 300W Output Full Load Efficiency up to 92.5% @48Vin; 92.5%@72Vin Parallel Connection of multiple units Box type package with metal base plate Package Dimension: 190.0x76.0x43.5mm (7.48”x2.99”x1.71”) Operating Temperature Range - 40°C to +85°C Intergrated fuseholder (option) Input Reverse Polarity Protection Minimized Inrush current Input UVLO, Output OCL, Short circuit protection, OVP, OTP Enable on/off (option) 1500Vac Isolation IP67 Protection RoHs Compliant ISO 9001, ISO 14001 certified manufacturing facility UL60950-1 CE Mark EMC compatible: EN12895, CISPR11 ClassB Electrical transient conduction: ISO7637-2 The B70SR24125, a wide input voltage range of 36~106V, and single isolated output converter, is the latest product offering from a world leader in power systems technology and manufacturing ― Delta Electronics, Inc. Such box type DCDC converter can provide 300W, 24V regulated DC output voltage with full load efficiency up to 92.5% @72Vin; The B70SR24125 offers input UVLO, output over current limit, short circuit, output over voltage, over temperature, and input reverse polarity protections, It has an option for intergrated fuse holder and enable on/off function. It also has parallel function; and allows a wide operating temperature range of –40°C to +85°C. With creative design technology and optimization of component placement, this converter possess outstanding electrical and thermal performance, as well as high reliability under extremely harsh operating conditions. The B70SR24125 meets IP67 protecion (not include the connector and fuseholder). Input Characteristics Item Condition Continuous Input Voltage Max Input voltage Min. Typ. Max. Unit 36 72 106 VDC 126 VDC 10 minutes, normal operating Input Under-Voltage Lockout, Turn-On 33 34 35 VDC 31 32 22 VDC Lockout Hysteresis Voltage 1 2 3 VDC Enable logic turn on 20 Voltage Threshold Input Under-Voltage Lockout, Turn-Off Voltage Threshold VDC Enable logic turn off Max Input Current Reflected input ripple current Vin=36V, 100% Load 9.3 Vin=72V, Vpp 5 VDC 10 A 0.2 A Vin=48V 30 50 mA Vin=72V, 80V 22 40 mA Vin=72V 8 15 mA Max Reverse Polarity Input Voltage 106 VDC Max Inrush current 10 A No-Load Input Current Off converter input current DS_B70SR24125_10222013 E-mail [email protected] http://www.deltaww.com/dcdc P1 Output Characteristics Item Operating Output Current Range Conditions Output Voltage Set Point Output Voltage Ripple and Noise, Output Current Limit Short current Current share accuracy Start-up time from input Start-up time from enable Rise time Output Voltage Protection Output Voltage Current Transient Maximum Output Capacitance Output overshoot Efficiency @ 100% Load Efficiency @ 100% Load Efficiency @ 100% Load Typ. Io=0 Min. 0 24.7 Io=12.5A 24.2 Vin=48V, Io=12.5A, peak to peak, 20MHz bandwidth RMS Vin=72V, 80V, Io=12.5A, peak to peak, 20MHz bandwidth RMS 13 Vin=72V, Auto restart, RMS value 12.5A for each module 27 Positive voltage step, 9.375A to 6.25A load dynamic, 0.1A/us slew rate Nagetive voltage step, 6.25A to 9.375A load dynamic, 0.1A/us slew rate ESR>10mohm 25 Max. 12.5 25.3 Unit A V 24.5 24.8 V 100 150 mV 25 40 mV 130 200 mV 35 14.5 7 8 700 400 130 29 50 16 12 1000 600 200 31 mV A A % mS mS mS V 100 200 mV 100 200 mV 5000 3 Vin=48V Vin=72V Vin=80V 90.5 90.5 90.5 92.5 92.5 92.5 µF % % % % Efficiency @ 60% Load Vin=48V 91.0 93.0 % Efficiency @ 60% Load Vin=72V 91.0 93.0 % Efficiency @ 60% Load Vin=80V 91.0 93.0 % Conditions Min. Typ. General Characteristics Item Isolation Voltage, Isolation Resistance, Input to Output Isolation Capacitance, Input to Output Switching Frequency MTBF Weight Max. Unit 1500 500 VAC VAC MΩ pF KHz Mhours g Min. Max. Unit -40 -40 +125 +85 97 ℃ ℃ ℃ ℃ % rel. H Input to Output, Input to Case Ouput to Case 10 5000 175 4.5 900 Ta=25ºC, 80%load Environmental Specifications Parameter Storage Temperature Range Operating Temperature Range Maximum permitted meta plate temperature Over Temperature Protection Humidity (non condensing) Water Protection Level Vibration Shock Emission Immunity ESD Conditions Ambient Temperature Vin=72V, Io=10A, Refer to figure19 NTC Temperature Without connector&fuseholder IEC 60068-2-6 IEC 60068-2-27 EN12895 EN12895, EN61000-4-3 EN12895, EN61000-4-2 118 95 IP67 10G/15~200HZ/3 PLANES 50G 3 PLANES 30-1000MHz 34-45dBuV/m 10V/m /27-1000MHz AM; 10V/m /900MHz PM Direct: ±2KV ±4KV; Air: ±2KV ±4KV ±8KV Notes 1 2 Specifications typical at Ta=+25℃, nominal input voltage and rated full load output current unless otherwise noted. Specifications are subject to change without notice. DS_B70SR24125_10222013 E-mail [email protected] http://www.deltaww.com/dcdc P2 ELECTRICAL CURVES Figure 1: Efficiency vs. Output current @ Vin=48V,72V,80V Figure 2: Vout vs. Vin @ Full load Figure 3: Input current vs. Input voltage @ Full load Figure 4: Output voltage vs. Output current OCL Performance @72Vin Figure 5: Output voltage vs. Output current @Vin=72V. Droop function. DS_B70SR24125_10222013 Figure 6: Current share accuracy vs. Total output current 2 in parallel. E-mail [email protected] http://www.deltaww.com/dcdc P3 ELECTRICAL CURVES (continous) Figure 7: Dynamic response to load step 6.25A~9.375A with 0.1A/uS slew rate at 72Vin CH1:VOUT, 100mV/div, 500uS/div Figure 8: Vout start up with Enable on at 72Vin,12.5A Iout, TOP:Enable, 50V/div, 100mS/div BOTTOM: VOUT, 10V/div, 100mS/div Figure 9: Output ripple & noise at 72Vin, 24A Iout CH1:VOUT, 50mV/div, 5uS/div Figure 10: Output over voltage protection at 72Vin, 24A Iout CH1:VOUT, 20V/div, 50mS/div Figure 11: Output short current @Vin=72V CH1:Io, 10A/div, 200mS/div DS_B70SR24125_10222013 Figure 12: Inrush current @ Vin=72V CH1:Iin, 2A/div, 200nS/div; Max current 4.3A, I2t=1.5E-7 A²S E-mail [email protected] http://www.deltaww.com/dcdc P4 FEATURES DESCRIPTIONS Output Over-Current Limit and Short Protection The modules include internal output over-current limit (OCL) and short circuit protection (SCP) circuits, the OCL set point is lower than that of the SCP; The response of SCP circuit is much fast than that of the OCL circuit. The slowly increase of the output current will let module enter OCL protection when the current exceeds the OCL set point, while the fast increase of the output current will let module enter SCP when the current exceeds the SCP set point. When the modules enter OCL protection, the output voltage will decrease while the output current is kept constant, the output voltage will soft start to set point when the overload condition is removed. The module will enter hiccup mode when it triggers the SCP set point. The module will try to restart after shutdown. If the overload condition still exists, the module will shut down again. This restart trial will continue until the overload condition is removed. Output Over-Voltage Protection The power module includes an internal output over-voltage protection(OVP) circuit, which monitors the voltage on the output terminals. If this voltage exceeds the OVP set point, the module will shut down, and then restart after a fixed delay time (hiccup mode), please refer to figure6 for detail. Over-Temperature Protection The over-temperature protection consists of circuitry that provides protection from thermal damage. If the temperature exceeds the preset temperature threshold the module will shut down,and all components will not exceed their absolute maximum temperature ratings.The module will restart after the temperature is within specification. Enable On/Off B70SR24125C has Enable control function. The Enable PIN is designed on the primary side of converter, the converter will turn on when the Enable PIN connected to VIN+, and turn off when the Enable PIN connected to VIN- or floating. B70SR24125C Enable VIN+ VINVo+ Vo- Figure 13: suggested Enable connection Input Reverse Voltage Protection The input reverse voltage protection is provided by an diode on the input line, the standoff voltage for the reverse protection shall be no less than -106V. DS_B70SR24125_10222013 E-mail [email protected] http://www.deltaww.com/dcdc P5 DESIGN CONSIDERATIONS Parallel connection of multiple units Two units parallel operation is verified, please contact Delta if more than two units need to be paralleled. While parallelling multiple units, the impedance of the cables from unit to junction point of each unit should be within ±5% of each other. Unit1 Unit1 Load Load Unit2 Unit2 Figure 14: suggested parallel connections EMC The converter has the internal EMI filters and meet the EMC standards EN12895 30-1000MHz 34-45dBuV/m.The test result is showed as below Conditions: Vin=72V, Io=12.5A, 10m measure distance 80 70 Level in dB米 V/ 60 50 40 30 20 10 0 30 M 50 60 80 10 0M 20 0 30 0 40 0 50 0 80 0 1G 40 0 50 0 80 0 1G Figure 15: test result(Vertical) 80 70 Level in dB米 V/ 60 50 40 30 20 10 0 30 M 50 60 80 10 0M 20 0 30 0 Figure 16: test result(Horizontal) DS_B70SR24125_10222013 E-mail [email protected] http://www.deltaww.com/dcdc P6 THERMAL CONSIDERATION The following figure shows the location to monitor the temperature of base plate. Before customer decides to use this DCDC converter, a thermal evaluation need to be did to make sure the temperature of base plate is lower than that read from below thermal curves (Figure18~20 base on different input voltage). Figure 17: Thermal test setsup THERMAL CURVE AOS Figure 18: Output Power vs. base plate temperature @Vin=48V DS_B70SR24125_10222013 E-mail [email protected] http://www.deltaww.com/dcdc P7 THERMAL CURVES AOS Figure 19: Output Power vs. base plate temperature @Vin=72V AOS Figure 20: Output Power vs. base plate temperature @Vin=80V DS_B70SR24125_10222013 E-mail [email protected] http://www.deltaww.com/dcdc P8 Mechanical Drawing Mechanical Dimensions Pin Connections Pin Function Description 1 OUTPUT - 2 OUTPUT + 3 INPUT - 4 INPUT + All dimensions in mm (inches) Tolerance:X.X±0.5 (X.XX±0.02) Connector: MOLEX MINI-FIT SrTM Header X.XX±0.25 ( X.XXX±0.010) (MOLEX P/N :42819-4213) B70SR24125A(C) Pin Function Description 1 OUTPUT - 2 OUTPUT + 3 INPUT - 4 INPUT + All dimensions in mm (inches) Tolerance:X.X±0.5 (X.XX±0.02) Connector: Deutsch DTP Receptacles X.XX±0.25 ( X.XXX±0.010) B70SR24125B(C) DS_B70SR24125_10222013 (DEUTSCH P/N :DTP04-4P) E-mail [email protected] http://www.deltaww.com/dcdc P9 Mechanical Drawing Mechanical Dimensions Pin Connections Pin Function Description 1 OUTPUT - 2 OUTPUT + 3 INPUT - 4 INPUT + 5 ENABLE All dimensions in mm (inches) Tolerance:X.X±0.5 (X.XX±0.02) Connector: MOLEX MINI-FIT SrTM Header X.XX±0.25 ( X.XXX±0.010) (MOLEX P/N :42819-5213) B70SR24125C(C) Pin Function Description 1 OUTPUT - 2 OUTPUT + 3 INPUT - 4 INPUT + All dimensions in mm (inches) Tolerance:X.X±0.5 (X.XX±0.02) Connector: MOLEX MINI-FIT SrTM Header X.XX±0.25 ( X.XXX±0.010) (MOLEX P/N :42819-4213) B70SR24125D(C) Physical Outline Case Size Case Material DS_B70SR24125_10222013 : : 190.0x76.0x43.5 mm (7.48”x2.99”x1.71”) Case: PC; Plate: AL6063 E-mail [email protected] http://www.deltaww.com/dcdc P10 Part Numbering System B 70 S R 24 125 C Form Factor Input Voltage Number of Outputs Product Series Output Voltage Output Current Option Code BBox 70 – 36V~106V S– Single R– Regular 24 – 24V 125 – 12.5A C Option Fitting With Built-in fuse holder Enable pin Sealed connector & fuse holder Connector Kit A YES NO NO 1xhousing+ 4 terminals B YES NO YES 1xhousing+ 4 terminals C NO YES NO 1xhousing+ 5 terminals D NO NO NO 1xhousing+ 4 terminals Model List Input Voltage Range B70SR24125(A\B\C\D) Input 36V~106V EFF @72VIN 100% LOAD Output 10A 24V 12.5A 92.5% CONTACT: www.deltaww.com/dcdc USA: Telephone: East Coast: 978-656-3993 West Coast: 510-668-5100 Fax: (978) 656 3964 Email: [email protected] Europe: Phone: +31-20-655-0967 Fax: +31-20-655-0999 Email: [email protected] Asia & the rest of world: Telephone: +886 3 4526107 ext 6220~6224 Fax: +886 3 4513485 Email: [email protected] WARRANTY Delta offers a two (2) years limited warranty. Complete warranty information is listed on our web site or is available upon request from Delta. Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these specifications at any time, without notice. DS_B70SR24125_10222013 E-mail [email protected] http://www.deltaww.com/dcdc P11 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Delta: B70SR24125A