B62SR24125

B62SR24125A/B/C/D
24V Output DC/DC Converter, Box Type Package
FEATURES

Ultra wide input voltage range, 18~106V

200W Output @ 18V~27V Vin range

300W Output @ 27~106V Vin range (Including 27V)

Full Load Efficiency up to 91.0% @48Vin

Intergrated fuse holder

Parallel Connection of multiple units

Box type package with metal base plate

Package Dimension:
190.0x76.0x44.0mm (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, SCP, 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 B62SR24125, a ultra wide input voltage range of 18~106V, 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 (200W at
Vin < 27V), 24.5V regulated DC output voltage with full load efficiency up to 91.0% @48Vin; The B62SR24125 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 B62SR24125 meets IP67 protecion (refer to “water protection level”
specification).
Input Characteristics
Item
Condition
Continuous Input Voltage
Max Input voltage
Min.
Typ.
Max.
Unit
18
48
106
VDC
126
VDC
10 minutes, normal operating
Input Under-Voltage Lockout, Turn-On
16
17
18
VDC
14
15
16
VDC
1
2
3
VDC
Vin=18V, 100% Load
13.0
13.5
A
Vin=24V
180
220
mA
Vin=48V
80
120
mA
Vin=72V, 80V
50
100
mA
Vin=48V
15
25
mA
0.6
A
Max Reverse Polarity Input Voltage
106
VDC
Max Inrush current
10
A
Voltage Threshold
Input Under-Voltage Lockout, Turn-Off
Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current
Off converter input current
Reflected input ripple current
Internal Input Fuse
DS_B62SR24125_05132016
Vin=48V, Vpp
Ø 6.35mm*31.75mm
250V/30A Fast-acting fuse
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P1
Output Characteristics
Item
Operating Output Current Range
Output Voltage Set Point
Min.
0
0
24.8
24.5
25.0
24.7
Max.
8
12.5
25.2
24.9
Vin=27~106V, Io=12.5A
24.3
24.5
24.7
V
9
13
50
20
10
15
100
50
12
17
mV
mV
A
A
Full load, Vpp, 20MHz bandwidth
RMS
Vin=24V
Vin=36V, 48V, 72V, 80V
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
Conditions
Vin=18V~27V
Vin=27V~106V(include 27V)
Total Vin range, Io=0
Vin=18~27V, Io=8A
6
10
%
Vin= 48V(for A/B/C/D)
700
1000
mS
Vin=72V(for A/B/C/D)
850
1200
mS
Vin= 48,72V(for C)
250
400
mS
60
100
mS
27
28
V
150
250
mV
26
Output Voltage Protection
Vin=24V, 4A to 6A, 0.1A/us slew rate
Output Voltage Current Transient, positive
and nagetive voltage step
Vin=27~106V. 6.25A to 9.375A, 0.1A/us slew rate
Item
Isolation Voltage,
Isolation Resistance, Input to Output
Isolation Capacitance, Input to Output
Switching Frequency
MTBF
Weight
150
Vin=24V
Vin=36V
Vin=48V
Vin=72V,80V
Vin=24V
Vin=36V
Vin=48V
Vin=72V,80V
86.5
87.5
89.0
90.0
86.0
88.0
89.5
90.0
88.5
89.5
91.0
92.0
88.0
90.0
91.5
92.0
Conditions
Input to Output, Input to Case
Ouput to Case
Min.
Typ.
Conditions
Ambient Temperature
NTC Temperature
Immunity
EN12895, EN61000-4-3
ESD
EN12895,
1
2
Max.
2250
550
Unit
VDC
VDC
MΩ
pF
KHz
Mhours
g
Min.
-40
-40
Max.
+125
+75
Unit
℃
℃
℃
% rel. H
118
95
Vibration
Shock
Emission
Notes
µF
%
%
%
%
%
%
%
%
%
7000
160
0.675
900
Ta=25ºC, 80%load
With connector&fuseholder for B
Without connector&fuseholder for A/C/D
IEC 60068-2-6
IEC 60068-2-27
EN12895
Water Protection Level
mV
10
Environmental Specifications
Parameter
Storage Temperature Range
Operating Temperature Range
Over Temperature Protection
Humidity (non condensing)
250
2000
3
ESR>10mohm
General Characteristics
Unit
A
A
V
V
Vin=48V, 24A for each module
time
Maximum Output Capacitance
Output overshoot
Efficiency @ 100% Load(8A)
Efficiency @ 100% Load(12.5A)
Efficiency @ 100% Load(12.5A)
Efficiency @ 100% Load(12.5A)
Efficiency @ 60% Load(4.8A)
Efficiency @ 60% Load(7.5A)
Efficiency @ 60% Load(7.5A)
Efficiency @ 60% Load(7.5A)
Typ.
EN61000-4-2
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
Specifications typical at Ta=+25℃, nominal input voltage and rated full load output current unless otherwise noted.
Specifications are subject to change without notice.
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ELECTRICAL CURVES
Figure 1: Efficiency vs. Output current
Vin=24V,36V,48V, 72V, 80V
Figure 3: Dynamic response to load step 6.25A~9.375A
with 0.1A/uS slew rate at 48Vin
CH1:VOUT, 200mV/div, 500uS/div
Figure 5: Output ripple & noise at 48Vin, 12.5A Iout
CH1:VOUT, 50mV/div, 2uS/div
DS_B62SR24125_05132016
@
Figure 2: Loss vs. Output current
@ Vin=24V,36V,48V, 72V, 80V
Figure 4: Vout start up with Vin on at 48Vin,12.5A Iout,
TOP:VIN, 20V/div, 200mS/div
BOTTOM: VOUT, 10V/div, 200mS/div
Figure 6: Output over voltage protection at 48Vin, 6.25A Iout
CH1:VOUT, 10V/div, 50mS/div
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ELECTRICAL CURVES (continous)
Figure 7: Input current vs. Input voltage
@ Vin=18V~27V, 200W; Vin=27V~106V, 300W
Figure 8: Output voltage vs. Output current
OCL Performance
Figure 9: Output voltage vs. Output current
@Vin=48V. Droop function.
Figure 10: Current share accuracy vs. Total output current
2 in parallel.
Figure 11: Inrush current @ Vin=48V
CH1:Iin, 2A/div, 200nS/div; Max current 2.7A, I2t=1.24E-7
A²S
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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 enter into latch mode,
and all components will not exceed their absolute maximum temperature ratings.The module will not recover
until the input source is powered on again.
Remote On/Off
B62SR24125C has Enable control 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.
Enable logic
Notes and Conditions
Min.
1 Enable logic on
For C
14
2 Enable logic off
For C
3 Enable input pull down resistor
(I=Vin/R)
For C
B62SR24125C
300k
Typ.
Max.
Unites
V
5
V
400k
ohm
Enable
VIN+
VINVo+
Vo-
Figure 12: 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.
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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.The test result is showed as below
Conditions: Vin=48V, Io=12.5A, 10m measure distance
Figure 14: test result(Vertical)
Figure 15: test result(Horizontal)
Fuse replacement
For the versions with 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 0314030.MXP
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THERMAL CONSIDERATION
The thermal curve (Figure17~21) is based on a 250x300x5 AL table, shown as below figure.
Figure 16: Thermal consideration
THERMAL CURVES
AOS
Figure 17:
DS_B62SR24125_05132016
Output Current vs. Ambient temperature
@ Vin=24V
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THERMAL CURVES
AOS
Figure 18:
Output Current vs. Ambient temperature
@ Vin=36V
AOS
Figure 19:
DS_B62SR24125_05132016
Output Current vs. Ambient temperature
@ Vin=48V
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AOS
Figure 20:
Output Current vs. Ambient temperature
@ Vin=72V
Output Current vs. Ambient temperature
@ Vin=80V
AOS
Figure 21:
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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 done to make sure the temperature of base plate is lower
than that read from below thermal curves (Figure23~27 base on different input voltage).
Figure 22: Thermal consideration
THERMAL CURVES
AOS
Figure 23:
DS_B62SR24125_05132016
Output Current vs. Base Table temperature @ Vin=24V
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THERMAL CURVES
AOS
Figure 24:
Output Current vs. Base Table temperature @ Vin=36V
AOS
Figure 25:
DS_B62SR24125_05132016
Output Current vs. Base Table temperature @ Vin=48V
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AOS
Figure 26:
Output Current vs. Base Table temperature @ Vin=72V
AOS
Figure 27:
DS_B62SR24125_05132016
Output Current vs. Base Table temperature @ Vin=80V
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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)
B62SR24125A
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)

B62SR24125AC
DS_B62SR24125_05132016
Connector kit :
Housing: 42816-0412
Terminal: 42815-0042
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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)
B62SR24125B
(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±0.02)

Connector:
Deutsch DTP Receptacles

Connector kit :
Housing: DTP06-4S
Wedge lock: WP-4S
Terminal: 0462-203-12141
X.XX±0.25 ( X.XXX±0.010)
(DEUTSCH P/N :DTP04-4P)
B62SR24125BC
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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)
B62SR24125C
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)

B62SR24125CC
DS_B62SR24125_05132016
Connector kit :
Housing: 42816-0512
Terminal: 42815-0042
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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)
B62SR24125D
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)

B62SR24125DC
Connector kit :
Housing: 42816-0412
Terminal: 42815-0042
Physical Outline
Case Size
Case Material
DS_B62SR24125_05132016
:
:
190.0x76.0x44.0 mm (7.48”x2.99”x1.73”)
Case: PC; Plate: AL6063
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Part Numbering System
C
B
62
S
R
24
125
A
Form
Factor
Input
Voltage
Number
of
Outputs
Product
Series
Output
Voltage
Output
Current
Option Code
B-
62 -
S-
R-
24 -
125 -
Box
18V~106V
Single
Regular
24V
12.5A
Option
Fitting
With
Built-in
fuse
holder
Enable
pin
Sealed
connector
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
B62SR24125(A\B\C\D)
Input
18V~106V
EFF @48VIN 100%
LOAD
Output
14A
24.5V
CONTACT: www.deltaww.com/dcdc
Email: dcdc@deltaww.com
USA:
Telephone:
East Coast: 978-656-3993
West Coast: 510-668-5100
Fax: (978) 656 3964
Europe:
Phone: +31-20-655-0967
Fax: +31-20-655-0999
12.5A
91.0%
Asia & the rest of world:
Telephone: +886 3 4526107
ext 6220~6224
Fax: +886 3 4513485
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.
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