Data Sheet
August 12, 2010
EQD075 Series (Eighth-Brick)DC-DC Converter Power Modules
18- 60Vdc Input; 3.3 to 5.0Vdc Output; 75W
RoHS Compliant
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to RoHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
High efficiency – 92% at 5.0V
o
, full load, 24V
in
Industry standard Eighth brick footprint and pin out
57.9 mm x 22.8 mm x 8.5 mm
(2.28 in. x 0.90 in. x 0.335 in.)
3:1 Input voltage range: 18 - 60 Vdc
Input under/overvoltage protection
Output overcurrent/voltage protection
Over-temperature protection
Tightly regulated output
Remote sense
No reverse current during output shutdown
Negative logic, Remote On/Off
Output voltage programmable from 3.0 Vdc to
5.5Vdc
Input-to-output isolation (Basic Insulation: 1500V)
Wide operating temperature range (-40°C to 85°C)
Meets conducted emissions requirements of
FCC/EN55022 Class A without external filter
Within FCC and VDE Class A Radiated Limits
UL*
60950-1Recognized,
CSA
†
C22.2 No. 60950-1-
03 Certified, and
VDE
‡
0805:2001-12 (EN60950-1)
Licensed
Meets the voltage and current requirements for ETSI
300-132-2 and complies with and licensed for Basic
insulation rating per EN60950-1
ISO** 9001 and ISO 14001 certified manufacturing
facilities
Applications
Distributed power architectures
Wireless Networks
Optical and Access Network Equipment
Enterprise Networks
Options
Positive logic, Remote On/Off
Auto restart after fault protection shutdown
Pin length
Description
The EQD075 series DC-DC converters are a new generation of open-frame DC/DC power modules designed to
support a 3:1 input voltage range, that allows operation in both 24V or 48V nominal input voltage systems, thus
eliminating the need for separate power modules for each input voltage range. These single output DC-DC
converters operate over an input voltage range of 18 to 60 Vdc. The series is also designed to provide a wide output
voltage set/trim range of 3.0 to 5.5Vdc, with output current up to 20A at 3.3Vdc or 15A at 5.0Vdc in an industry
standard eighth brick package. The output is isolated from the input, allowing versatile polarity configurations and
grounding connections. Built in filtering for both input and output minimizes the need for external filtering.
*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
‡
CSA
is a registered trademark of Canadian Standards Association.
VDE
is a trademark of Verband Deutscher Elektrotechniker e.V.
** ISO is a registered trademark of the International Organization of Standards
Document No: DS05-031 ver. 1.31
PDF name: EQD075A.pdf
Data Sheet
August 12, 2010
EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75W
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in
excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect the device reliability.
Parameter
Input Voltage
Continuous
Transient (100 ms)
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
I/O Isolation (100% factory Hi-Pot tested)
Input - Output
A
1500
Vdc
A
T
stg
-55
125
°C
A
A
V
IN
V
IN, trans
T
A
-0.3
-0.3
-40
60
75
85
Vdc
Vdc
°C
Device
Symbol
Min
Max
Unit
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Operating Input Voltage
Maximum Input Current
(V
IN
=0 to V
IN, max
, V
o
= V
o,set
, I
O
=I
O, max
)
Input Stand-by Current
Module on / off disabled (V
IN
= V
IN, nom
, V
o
= 0 V)
Input No Load Current
Module on / off enabled (V
IN
= V
IN, nom
, I
o
= 0 A)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance;
o
T
a
25 C, C
in
= 33μF)
Input Ripple Rejection (100 - 120Hz)
A
A
A
A
50
I
IN, NL
It
2
Device
A
A
Symbol
V
IN
I
IN,max
Min
18
Typ
24/48
Max
60
6
Unit
Vdc
Adc
A
I
IN, Stby
25
mA
110
1
30
mA
As
mAp-p
dB
2
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to being
part of a complex power architecture. To preserve maximum flexibility, internal fusing is not included, however, to
achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a very
fast acting surface mount fuse with a maximum rating of 6.3 A (see Safety Considerations section). Based on the
information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a
lower rating can be used. Refer to the fuse manufacturer’s data sheet for further information.
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Data Sheet
August 12, 2010
EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75W
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
(V
IN
= V
IN, min
=24/48, I
O
=I
O, max
, T
A
=25°C)
Output Voltage
(Over all line, load, and
Temp Conditions Until end of life)
Output Regulation
Line (V
IN
= V
IN, min
to V
IN, max
)
Load (I
O
= I
O, min
to I
O, max
)
Temperature (T
ref
=T
A, min
to T
A, max
)
Output Ripple and Noise on nominal output
(V
IN
=V
IN, nom
and I
O
= I
O, min
to I
O, max
,
C
out
= 1μF ceramic // 10μF Tantalum capacitor)
3.3 to 5.0V output
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
ESR
≥
10 mΩ
Output Current
@ V
o
= 3.3V
@ V
o
= 5V
Output Current Limit Inception (Hiccup Mode)
(V
o
= 95% V
o, set
)
Output Short-Circuit Current
V
O
≤
250 mV @ 25 C
Efficiency
V
IN
= 24V, T
A
=25°C, I
O
= I
O, max
A
@ V
o
= 3.3V, I
O
= 20A
@ V
o
= 5V, I
O
= 15A
V
IN
= 48V, T
A
=25°C, I
O
= I
O, max
A
@ V
o
= 3.3V, I
O
= 20A
@ V
o
= 5V, I
O
= 15A
Switching Frequency
A
A
A
η
η
f
sw
160
88
90
%
%
KHz
A
A
η
η
87
92
%
%
o
Device
A
Symbol
V
O, set
Min
-1.6
Typ
Max
+1.6
Unit
% V
O, set
A
V
O
-3
-
+3
% V
O
A
A
A
0.05
0.05
0.25
0.2
0.2
1
% V
O, nom
% V
O, nom
% V
O, nom
A
A
A
A
A
A
A
C
O
I
o
I
o
I
O, lim
I
O, s/c
0
0
0
105
5
50
20
80
5000
20
15
mV
rms
mV
pk-pk
μF
A dc
A dc
% I
o, max
% I
o, max
115
150
150
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Data Sheet
August 12, 2010
EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75W
Electrical Specifications
(continued)
Parameter
Dynamic Load Response
(dI
o
/dt= 1A / 10s; V
IN
= V
IN, nom
; T
A
=25°C)
Load Change from I
o
= 50% to 75% of I
o,max
Peak Deviation
Settling Time (V
o
<10% peak deviation)
Load Change from I
o
= 50% to 25% of I
o,max
Peak Deviation
Settling Time (V
o
<10% peak deviation)
A
V
pk
t
s
2
80
4
150
%V
o
s
A
V
pk
t
s
2
80
4
150
%V
o
s
Device
Symbol
Min
Typ
Max
Unit
Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Min
10
Typ
1000
Max
Unit
pF
M
General Specifications
Parameter
Calculated MTBF (V
IN
= 24V, I
O
=80%I
O, max
, T
A
=40°C)
Weight
Min
Typ
1,677,152
25.3 (0.89)
Max
Unit
Hours
g (oz.)
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Data Sheet
August 12, 2010
EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75W
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
On/Off Signal interface
(V
IN
=V
IN, min
to V
IN, max
; Open collector or equivalent, Signal
referenced to V
IN
(-) terminal
Logic Low (Module OFF)
Input low Voltage = 0.0 V
Input low Current = 1 mA
Logic High (Module ON)
Input High Voltage = 5.0 V
Input High Current = 0 mA
Turn-On Delay and Rise Times
(I
O
=80 % I
O, max
, T
A
= 25 C)
Case 1: On/Off input is set to Logic High and then input
power is applied (delay from instant at which V
IN
= V
IN, min
until V
o
=10% of V
o,nom
)
Case 2: Input power is applied for at least one second and
then the On/Off input is set to logic high (delay from instant
at which Von/Off = 0.9V until V
o
=10% of V
o, set
)
Output voltage Rise time (time for Vo to rise from 10%
of V
o, nom
to 90% of V
o, nom
) V
o, nom
set to 3.3V
Output voltage Rise time (time for Vo to rise from 10%
of V
o, nom
to 90% of V
o, nom
) V
o, nom
set to 5.0V
Output voltage overshoot – Startup
I
O
= 80% of I
O, max
; T
A
= 25 C
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
Input Over voltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
Output Voltage Set point Adjustment
Output remote sense voltage range
(Max voltage drop is 0.5 V)
Output voltage adjustment range (TRIM)
Over voltage protection
Over Temperature Protection
A
A
A
V
OV, set
T
ref
3.0
5.7
130
5.5
6.5
Vdc
Vdc
°C
A
V
SENSE
10
%
V
O,nom
A
V
OVLO
60
62
64
2
65
V
V
14
A
V
UVLO
17
15.5
1.5
18
V
V
o
o
Device
Symbol
Min
Typ
Max
Unit
A
A
A
A
V
IL
I
IL
V
IH
I
IH
-0.7
―
―
―
―
―
―
―
1.2
1.0
5
50
V
mA
V
μA
A
T
delay
―
15
20
msec
A
T
delay
―
5
10
msec
A
A
T
rise
T
rise
―
―
10
15
―
15
20
1
msec
msec
% V
O, set
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