HWD DC/DC Series Data Sheet
Features
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75 Watts total output power
Wide input range 18V – 60V
Independent dual outputs
Flexible load sharing
Open-frame design with IMS board
Low profile – 12.7mm height
Start-up into high capacitive load
Output overcurrent protection (self restart)
Output overvoltage protection (self restart)
Overtemperature protection (self restart)
Setpoint accuracy
±
2.0%
Output voltage trim adjust, independent for
each output
Input/output isolation: 1500V
UL 1950 Recognition, CSA 22.2 No. 950-95
certification
Applications
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Distributed power architectures
Telecommunications equipment
LAN/WAN applications
Data processing applications
Description
The HWD series provides onboard conversion of standard telecom and datacom input voltages into two isolated
low-voltage outputs. These products offer a unique combination of wide input range, low profile, and high current
capability. High efficiency and advanced thermal management enable these half-brick products to deliver full rated
power at 55°C ambient temperature, with 200 LFM airflow, without the addition of heatsinks.
Model Selection
Model
Input
Voltage
Range, VDC
18-60
Input
Current,
Max, ADC
5.5
Output
Voltage,
VDC
5.0/3.3
Output Rated
Current, ADC
15/15
Output Ripple
and Noise,
mV p-p
100
Efficiency %
HWD075DGE-A
81% @ 24Vin
79% @ 48Vin
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not authorized for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional
president of Power-One, Inc.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on
the date manufactured. Specifications are subject to change without notice.
REV. JUN 27, 2003
Page 1 of 12
HWD DC/DC Series Data Sheet
Table 1. Absolute Maximum Ratings
Parameter
Input Voltage
Continuous
Transient (100 msec)
Operating Baseplate Temperature
Note 1
Storage Temperature
Input to Output Isolation
Output Short Circuit Duration
Total Output Power
No Load Power Dissipation
Symbol
Vi
Vi
Tb
Tstg
-
-
P
o
max
Min
-
-
-40
-55
-
-
-
-
Max
60
100
+100
+125
1500
Continuous
75
6
Units
VDC
VDC
°C
°C
VDC
-
W
W
Electrical Specifications
Unless otherwise indicated, specifications apply over all input voltages, resistive load, and Tbp=+40°C.
Table 2. Input Specifications
Parameter
Voltage Range
Maximum Input Current
Input Ripple Rejection (120 Hz)
Inrush Transient
Input Reflected Ripple (see figure 1)
Symbol
Vi
Ii
Min
18*
-
-
-
-
Typ
24/48
-
60
-
-
Max
60
5.5
-
1
250
Units
VDC
A
dB
2
As
mA p-p
•
Module will operate within specification with an input voltage of 18 VDC, but must be turned on with an input voltage > 19.5 VDC.
See Undervoltage Lockout Specification.
Fusing Considerations
CAUTION
This DC-DC converter is not internally fused. An external input fuse must always be used.
REV. JUN 27, 2003
Page 2 of 12
HWD DC/DC Series Data Sheet
Table 3. Output Specifications
Parameter
Output Power
Output Voltage Set Point
(Vi=24VDC or Vi=48VDC,
Io1,Io2=7.5A)
Output Line Regulation:
(Vi=Vi,min to Vi,max)
(Io1, Io2=7.5A)
Output Load Regulation:
(Io,min to Io,max)
Output Temperature Regulation:
(Tbase =-40°C to +100°C)
Output Current
(Maximum output power limited to
75W)
Output Ripple (See Figure 2)
(DC to 20MHz)
(Io1,Io2 = 7.5A)
Output Current Limit inception
(Other outputs at no load)
Transient Response
(50% to 100% Load Step,
∆Io/∆t=0.1A/uSec)
Peak Deviation
Settling Time (Vo, 1% of Vo1)
Overvoltage Limit
Symbol
Po1
Po2
Po1+Po2
Vo1
Vo2
Vo1,Vo2
Min
-
-
-
4.9
3.23
-
Typ
-
-
-
5.0
3.3
0.05
Max
75
50
75
5.1
3.37
0.2
Units
W
W
W
VDC
VDC
%
Vo1,Vo2
All Outputs
Io1
Io2
Vo1
Vo2
Io1
Io2
-
-
0.5
0.5
-
-
-
-
0.5
0.02
7.5
7.5
75
75
17
21
1
0.05
15
15
100
100
19
23
%
%/°C
A
A
mVp-p
mVp-p
A
A
Vo1
Vo2
Vo1,clamp
Vo2,clamp
-
-
-
5.9
3.6
100
200
150
-
-
200
300
250
6.5
4.7
mV
mV
µsec
VDC
VDC
Table 4. Feature Specifications
Parameter
Remote On/Off, Primary side
Vlow
Vhigh
Sink Current-Logic Low
Turn-on time (Within 1% V
o
nom)
Switching Frequency
Output Voltage Adjust
Adjust Up
Adjust Down
Thermal Shutdown
Undervoltage Lockout
Turn-on
Turn-off
Symbol
Min
-
-
-
-
-
Typ
-
-
-
3.5
350
5.5
3.63
4.5
2.97
Max
1
7
2
5
-
5.61
3.71
4.59
3.03
+115
19.5
-
Units
V
V
mA
msec
kHz
VDC
VDC
VDC
VDC
°C
V
V
Vo1
Vo2
Vo1
Vo2
5.39
3.55
4.41
2.91
+105
-
16.5
19.2
16.8
REV. JUN 27, 2003
Page 3 of 12
HWD DC/DC Series Data Sheet
Table 5. Environmental
Parameter
Operating Baseplate Temperature
Operating Humidity (non-condensing)
Storage Humidity (non-condensing)
Min
-40
-
-
Typ
-
-
-
Max
+100
95
95
Units
°C
%
%
Table 6. Isolation Specifications
Parameter
Input to Each Output
Input to Baseplate
Output to Output
Resistance, Input - Output
Capacitance, Input - Output
Min
1500
1500
-
10
-
Typ
-
-
-
-
2200
Max
-
-
-
-
-
Units
VDC
VDC
VDC
MΩ
pF
Table 7. EMI and Regulatory Agency Compliance
Conducted Emissions
(With input filter configuration in Figure 3.)
Safety
CISPR 22 class A
UL60950 Recognized, CAN/CSA C22.2 No. 60950-00
Recognized
Table 8. General Specifications
Parameter
Efficiency
η
(Vi=24VDC, Io1,Io2 = 7.5A)
(Vi=48VDC, Io1,Io2 = 7.5A)
Calculated MTBF (Po=60W, Tbp=40°C)
Min
79
77
-
Table 9. Physical
Typ
81
79
900
Max
-
-
-
Units
%
kHrs
Parameter
Dimensions
Weight
Markings & labeling
Units
2.30 (58.4)
2.40 (60.9)
0.50 (12.70)
in (mm)
2.4(68)
oz(g)
Includes Part Number, Power-One Logo, Date Code and
Country of Manufacture
REV. JUN 27, 2003
Page 4 of 12
HWD DC/DC Series Data Sheet
Mechanical Diagram
Pin
1
2
3
4
5
6
7
8
9
10
Function
-Vin
Case
On/Off
+Vin
+Vo2
+Vo2 Rtn
Trim 2
+Vo1
+Vo1 Rtn
Trim 1
Table 10. Ordering Information
Options
Remote On/Off
Trim
Pin Length
Suffixes to add to part number
Positive- Standard, no suffix required
Negative- Add “N” suffix
Negative- Standard, no suffix required
0.18”- Standard, no suffix required
0.11”- Add “8” suffix
0.15”- Add “9” suffix
Notes
1.
Consult factory for the complete list of available options.
REV. JUN 27, 2003
Page 5 of 12
