Datasheet

ManualsBrandsDELTA ELECTRONICS ManualsPSU ComponentsDC/DC converter (component) 12.4 Vdc 24 A 300 W No. of outputs: 1 x

B70SR12424A/B/C/D

12V Output DC/DC Converter, Box Type Package

DS_B70SR12424_12202013 E-mail DCDC@delta.com.tw

http://www.deltaww.com/dcdc

FEATURES

 Wide input voltage range, 36~106V

 300W Output

 Full Load Efficiency up to 89.5% @48Vin;

90%@72Vin

 Intergrated fuse holder (option)

 Parallel Connection of multiple units

 Box type package with metal base plate

 Package Dimension:

190.0x76.0x44.0 mm (7.48”x2.99”x1.73”)

 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, CISPR11 ClassA

 Electrical transient conduction: ISO7637-2

The B70SR12424, 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 B70SR12424 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 +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 B70SR12424 meets IP67 protection (refer to “water protection level” specification).

Input Characteristics

Item

Condition

Min.

Typ.

Max.

Unit

Continuous Input Voltage

106

VDC

Max Input voltage

10 minutes, normal operating

126

VDC

Input Under-Voltage Lockout, Turn-On

Voltage Threshold

VDC

Input Under-Voltage Lockout, Turn-Off

Voltage Threshold

VDC

Lockout Hysteresis Voltage

VDC

Maximum Input Current

Vin=36V, 100% Load

9.2

No-Load Input Current

Vin=48V

Vin=72V, 80V

Off converter input current

Vin=72V, enable off (C version)

Reflected input ripple current

Vin=72V, Vpp

0.2

Max Reverse Polarity Input Voltage

106

VDC

Max Inrush current

Internal Input Fuse

Ø 6.35mm*31.75mm

250V/25A Fast-acting fuse

Summary of content (15 pages)

PAGE 1
B70SR12424A/B/C/D 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 (option)  Parallel Connection of multiple units  Box type package with metal base plate  Package Dimension: 190.0x76.0x44.0 mm (7.48”x2.99”x1.
PAGE 2
Output Characteristics Item Operating Output Current Range Conditions Output Voltage Set Point Output Voltage Ripple and Noise, Output Current Limit Current share accuracy Start-up time(start _up time by Vin) Start-up time(start _up time by Enable) 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.
PAGE 3
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.
PAGE 4
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: Inrush current @ Vin=72V CH1:Iin, 2A/div, 200nS/div; Max current 4.3A, I2t=1.5E-7 A²S DS_B70SR12424_12202013 E-mail DCDC@delta.com.tw http://www.deltaww.
PAGE 5
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.
PAGE 6
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 13: suggested parallel connections EMC The converter has the internal EMI filters and meet the EMC standards EN12895 30-1000MHz 34-45dBuV/m.
PAGE 7
THERMAL CONSIDERATION The thermal curve (Figure17~19) is based on a 250x300x5 AL table, shown as below figure. Figure 16: Thermal consideration THERMAL CURVE AOS Figure 17: Output Current vs. ambient temperature DS_B70SR12424_12202013 @Vin=48V E-mail DCDC@delta.com.tw http://www.deltaww.
PAGE 8
THERMAL CURVES AOS Figure 18: Output Current vs. ambient temperature @Vin=72V AOS Figure 19: Output Current vs. ambient temperature DS_B70SR12424_12202013 @Vin=80V E-mail DCDC@delta.com.tw http://www.deltaww.
PAGE 9
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 (Figure21~23 base on different input voltage). Figure 20: Thermal consideration THERMAL CURVE AOS Figure 21: Output Current vs. base plate temperature DS_B70SR12424_12202013 @Vin=48V E-mail DCDC@delta.com.tw http://www.
PAGE 10
THERMAL CURVES AOS Figure 22: Output Current vs. base plate temperature @Vin=72V AOS Figure 23: Output Current vs. base plate temperature DS_B70SR12424_12202013 @Vin=80V E-mail DCDC@delta.com.tw http://www.deltaww.
PAGE 11
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) X.XX±0.25 ( X.XXX±0.010)  Connector: MOLEX MINI-FIT SrTM Header (MOLEX P/N :42819-4213) B70SR12424A 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.
PAGE 12
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: Deutsch DTP Receptacles X.XX±0.25 ( X.XXX±0.010) B70SR12424B (DEUTSCH P/N :DTP04-4P) Pin Function Description 1 OUTPUT - 2 OUTPUT + 3 INPUT - 4 INPUT +  All dimensions in mm (inches)  Tolerance:X.X±0.5 (X.XX±0.
PAGE 13
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) X.XX±0.25 ( X.XXX±0.010)  Connector: MOLEX MINI-FIT SrTM Header (MOLEX P/N :42819-5213) B70SR12424C 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) X.XX±0.25 ( X.XXX±0.
PAGE 14
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) X.XX±0.25 ( X.XXX±0.010)  Connector: MOLEX MINI-FIT SrTM Header (MOLEX P/N :42819-4213) B70SR12424D 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) X.XX±0.25 ( X.XXX±0.
PAGE 15
Part Numbering System C 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.