B70SR12424A 12V Output DC/DC Converter, Box Type Package FEATURES Wide input voltage range, 36~106V 300W Output Full Load Efficiency up to 89.5% @48Vin; 90%@72Vin Intergrated fuse holder 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 +75°C Input Reverse Polarity Protection Minimized Inrush current Input UVLO, Output OCL, Short circuit protection, OVP, OTP Enable on/off (option) 2250VDC Isolation IP67 Protection RoHs Compliant ISO 9001, ISO 14001 certified manufacturing facility UL60950 CE Mark EMC compatible: EN12895 Electrical transient conduction: ISO7637-2 The B70SR12424A, 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, 12.4V regulated DC output voltage with full load efficiency up to 90% @72Vin; The B70SR12424A offers input UVLO, output over current limit, short circuit, output over voltage, over temperature, and input reverse polarity protections, It has an intergrated fuse holder. It also has parallel function; and allows a wide operating temperature range of –40°C to +75°C. With creative design technology and optimization of component placement, this converter possess outstanding electrical and thermal performance, as well as high reliability under extrmely harsh operating conditions. The B70SR12424A meets IP67 protection (not include the connector and fuseholder). Input Characteristics Item Condition Continuous Input Voltage Max Input voltage 126 VDC VDC 31 32 22 VDC 1 2 3 VDC Vin=36V, 100% Load 9.2 10 A Vin=48V 35 60 mA Vin=72V, 80V 25 50 mA Lockout Hysteresis Voltage Vin=72V, Vpp Max Reverse Polarity Input Voltage Max Inrush current DS_B70SR12424A_10032013 VDC 35 Voltage Threshold Internal Input Fuse Unit 106 34 Input Under-Voltage Lockout, Turn-Off Reflected input ripple current Max. 72 33 Voltage Threshold No-Load Input Current Typ. 36 10 minutes, normal operating Input Under-Voltage Lockout, Turn-On Maximum Input Current Min. Ø 6.35mm*31.75mm 0.2 A 106 VDC 10 A 250V/25A Fast-acting fuse 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 Rise time Output Voltage Protection Output Voltage Current Transient Maximum Output Capacitance Output overshoot Efficiency @ 100% Load Efficiency @ 100% Load Efficiency @ 100% Load Efficiency @ 60% Load Efficiency @ 60% Load Efficiency @ 60% Load 12.6 Max. 24 12.8 Unit A V Io=24A 12.0 12.2 12.4 V 100 150 mV 30 50 mV 150 200 mV 25 50 28 13 6 750 130 15 80 31 3.5 10 1000 200 17 mV A A % mS mS V 300 500 mV 300 500 mV 5000 3 µF % % % % % % % Max. Unit Vin=48V, Io=24A, peak to peak, 20MHz bandwidth RMS Vin=72V, 80V, Io=24A, peak to peak, 20MHz bandwidth RMS Vin=48V, Auto restart, RMS value 24A for each module Positive voltage step, 18A to 12A load dynamic, 0.1A/us slew rate Nagetive voltage step, 12A to 18A load dynamic, 0.1A/us slew rate ESR>10mohm General Characteristics Item 87.5 88.0 88.0 88.0 88.3 88.3 89.5 90.0 90.0 90.0 90.3 90.3 Conditions Min. Typ. 2250 550 Parameter VDC VDC MΩ pF KHz Mhours g 10 5000 175 4.3 900 Ta=25ºC, 80%load Environmental Specifications 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 Typ. Vin=48V Vin=72V Vin=80V Vin=48V Vin=72V Vin=80V Input to Output, Input to Case Ouput to Case Isolation Voltage, Isolation Resistance, Input to Output Isolation Capacitance, Input to Output Switching Frequency MTBF Weight Io=0 Min. 0 12.4 Conditions Ambient Temperature Vin=72V, Io=24A, Refer to figure20 NTC Temperature Without connector&fuseholder IEC 60068-2-6 IEC 60068-2-27 EN12895 EN12895, EN61000-4-3 EN12895, EN61000-4-2 Min. Max. Unit -40 -40 +125 +75 95 ℃ ℃ ℃ ℃ % rel. H 122 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_B70SR12424A_10032013 E-mail [email protected] http://www.deltaww.com/dcdc P2 ELECTRICAL CURVES Figure 1: Efficiency vs. Output current @ Vin=48V,72V,80V Figure 2: Loss vs. Output current @ Vin=48V,72V,80V Figure 3: Dynamic response to load step 12A~18A with 0.1A/uS slew rate at 72Vin CH1:VOUT, 200mV/div, 200uS/div Figure 4: Vout start up with Vin on at 72Vin,24A Iout, TOP:VIN, 20V/div, 200mS/div BOTTOM: VOUT, 5V/div, 200mS/div Figure 5: Output ripple & noise at 72Vin, 24A Iout CH1:VOUT, 100mV/div, 5uS/div DS_B70SR12424A_10032013 Figure 6: Output over voltage protection at 72Vin, 24A Iout CH1:VOUT, 10V/div, 50mS/div E-mail [email protected] http://www.deltaww.com/dcdc P3 ELECTRICAL CURVES (continous) Figure 7: Input current vs. Input voltage @Full load Figure 8: Output voltage vs. Output current OCL Performance Figure 9: Output voltage vs. Output current @Vin=72V. Droop function. Figure 10: Current share accuracy vs. Total output current 2 in parallel. Figure 11: Output short current @Vin=72V CH1:Io, 20A/div, 200mS/div DS_B70SR12424A_10032013 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. Remote On/Off B70SR12424A has an option for Enable control. An additional PIN need to added to achieve this function. This 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. Delta can change the 4PIN connector to a 5PIN connector to achieve the enable function, please contact us if you need this function. B70SR12424 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_B70SR12424A_10032013 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=24A, 10m measure distance Figure 15: test result(Vertical) Figure 16: test result(Horizontal) Fuse replacement The module has the intergratted the fuse holder, when the fuse needs to be replaced, it can be taked down in an anticlockwise direction by slotted type screwdrivers . Recommended fuse replacement P/N: Littlefuse 0314025.MXP DS_B70SR12424A_10032013 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 consideration THERMAL CURVE AOS Figure 18: Output Current vs. base plate temperature DS_B70SR12424A_10032013 @Vin=48V E-mail [email protected] http://www.deltaww.com/dcdc P7 THERMAL CURVES AOS Figure 19: Output Current vs. base plate temperature @Vin=72V AOS Figure 20: Output Current vs. base plate temperature DS_B70SR12424A_10032013 @Vin=80V 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) Physical Outline Case Size Case Material : : DS_B70SR12424A_10032013 190.0x76.0x43.5 mm (7.48”x2.99”x1.71”) Case: PC; Plate: AL6063 E-mail [email protected] http://www.deltaww.com/dcdc P9 Part Numbering System B 70 S R 124 24 A Form Factor Input Voltage Number of Outputs Product Series Output Voltage Output Current Option Code BBox 70 – 36V~106V S– Single R– Regular 124 – 12.4V 24 – 24A C Option Fitting With Built-in fuse holder Enable pin Sealed connector & fuse holder A YES NO NO B YES NO YES C NO YES NO D NO NO NO Connector Kit 1xhousing+ 4 terminals Model List Input Voltage Range B70SR12424(A\B\C\D) Input 36V~106V EFF @72VIN 100% LOAD Output 10A 12.4V 24A 90.0% WARRANTY Delta offers a three (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_B70SR12424A_10032013 E-mail [email protected] http://www.deltaww.com/dcdc P10