GE
G
18-75Vdc In
1
nput; 5Vdc, 24A, 120W Output
W
Datasheet
D
t
EHHD024
E
4A0A HA
AMMERH
HEAD* Se
eries; DC-DC Con
nverter Power Mo
odules
Featu
ures
Compliant to RoHS II EU “Direct 2011/65/E (-Z versions)
tive
EU
Compliant to REA Directive (E No 1907/20
ACH
EC)
006
Fla and high efficiency curve
at
Ind
dustry standard DOSA compl
d,
liant footprint
58.4mm x 22.8mm x 8.9mm
(2.30 in x 0.9 in x 0.35 in)
Ult wide input v
tra
voltage range: 18-75 V
dc
Tig
ghtly regulated output
Remote sense
Ou
utput Voltage a
adjust: 90% to 110% of V
O,nom
1
Constant switching frequency
Positive remote O
On/Off logic
Ou
utput overcurre and overvoltage protectio
ent
on
Ov
vertemperature protection
e
Wide operating temperature ra
ange (-40°C to 8
85°C)
Suitable for cold w cooling us
wall
sing suitable Gap Pad applied
d
dir
rectly to top sid of module
de
AN
NSI/UL
#
60950-1
1-2011 and CA
AN/CSA† C22.2 No. 60950-1-
07, Second Editio + A1:2011 (M
on
MOD), dated Ma
arch 19, 2011;
50-1 (VDE‡ 0805 Teil 1):2011-0 EN 60950-
01;
and DIN EN 6095
2006 + A11:200 + A1:2010, DIN EN 60950-1
09
D
1/A12 (VDE
1:2
0805-1/A12):2011-08; EN 60950
0-1/A12:2011-02, IEC 60950-
-
ed.2);am1:2009
9
1(e
CE mark meets 2006/95/EC dire
ective
§
Me the voltage and current r
eets
e
requirements f ETSI 300-
for
132-2 and compl with and lic
lies
censed for Bas insulation
sic
rat
ting per EN60950-1
2250 Vdc Isolatio tested in com
on
mpliance with IEEE 802.3
¤
PoE
andards
sta
ISO
**
9001 and ISO 14001 certified manufacturing facilities
O
O
RoHS Com
mpliant
Application
A
ns
Distributed Power Archite
d
ectures
Wireless N
Networks
Enterprise Networks inclu
uding Power ov Ethernet (P
ver
PoE)
Equipment
Industrial E
Options
O
Negative R
Remote On/Off logic (preferre
f
ed)
Over curre
ent/Over tempe
erature/Over vo
oltage protecti
ions
(Auto-resta (preferred)
art)
1/8
th
Brick Heat plate for 1/8
th
heatsink
ks
1/4
th
Brick heat plate with unthreaded inserts
ount version (-S
S)
Surface Mo
Description
D
n
The EHHD024A [HAMMERH
T
A0A
HEAD*] Series, e
eighth-brick, lo
ow-height pow modules are isolated dc-d converters which provide a
wer
e
dc
single, precisely regulated ou
s
y
utput voltage o
over an ultra-w
wide input voltage range of 18-75V
dc
. The EHHD024A0 provides 5V
dc
f
0A
V
nominal output voltage rated for 24A
dc
outp current. The module inco
n
t
d
put
orporates GE’s vast heritage f reliability an quality, while
for
nd
also using the latest in techn
a
nology, and co
omponent and process standardization to achieve highly competitive cost. The ope
d
o
en
frame module construction, a
available in bo surface-mo
oth
ount and throu
ugh-hole packa
aging, enable designers to de
d
evelop cost an
nd
space efficient solutions. The module achie
s
e
eves typical full load efficienc greater than 91% at V
IN
=2
dc
and V
IN
=
cy
24V
=48V
dc
. Standar
rd
fe
eatures includ remote On
de
n/Off, remote sense, output voltage adju
t
ustment, overv
voltage, overc
current and o
overtemperature
protection. An optional heat plate allows for external st
p
tandard, eight
th-brick or qua
arter-brickheat sink attachm
ment to achiev
ve
higher output c
h
current in high temperature a
applications.
*
Trademark of General Electric Company.
UL
is a registered tra
ademark of Underwrite Laboratories, Inc.
ers
CSA
is a registered tra
ademark of Canadian Standards Associatio
on.
‡
VDE
is a trademark o Verband Deutscher Elektrotechniker e.V.
of
§
This product is intend
ded for integration into end-user equipment . All of the required p
o
t
procedures of end-use equipment should be followed.
e
e
¤ IEEE and 802 are reg
gistered trademarks of the Institute of Electr
f
rical and Electronics E
Engineers, Incorporate
ed.
** ISO is a registered tr
*
rademark of the Intern
national Organization of Standards
†
#
July 9, 2014
©2014 General Electric Compan All rights rese
ny.
erved.
Page 1
GE
EHHD024A0A Series: DC-DC Converter Power Module
18 to 75V
dc
Input; 5V
dc
, 24A, 120W Output
Absolute Maximum Ratings
Datasheet
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, operational (≤100 ms)
Operating Ambient Temperature
Maximum Heat Plate Operating Temperature
(see Thermal Considerations section)
Storage Temperature
Altitude*
I/O Isolation voltage (100% factory Hi-Pot tested)
All
All
All
T
stg
-55
125
4000
2250
°C
m
V
dc
All
All
All
-18H, H
V
IN
V
IN,trans
T
A
T
C
-0.3
-0.3
-40
-40
80
100
85
105
V
dc
V
dc
°C
°C
Device
Symbol
Min
Max
Unit
⎯
⎯
* For higher altitude applications, contact your GE Sales Representative for alternative conditions of use.
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
= V
IN, min
to V
IN, max
, V
O
= V
O, set
, I
O
=I
O, max
)
Input No Load Current
V
IN
= 24V
dc
, (I
O
= 0, module enabled)
V
IN
= 48V, (I
O
= 0, module enabled)
Input Stand-by Current
(V
IN
= 24 to 48V, module disabled)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance; V
IN, min
to V
IN, max,
I
O
= I
Omax
;
See Test configuration section)
Input Ripple Rejection (120Hz)
All
All
I
IN,stand-by
I
2
t
All
I
IN,No load
120
80
5
11
0.5
mA
Device
All
All
Symbol
V
IN
I
IN
Min
18
Typ
24/48
7.3
Max
75
7.8
Unit
V
dc
A
dc
mA
A
2
s
All
30
mA
p-p
All
60
dB
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 an integrated part
of sophisticated power architectures. 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 fast-acting fuse with a
maximum rating of 15 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.
July 9, 2014
©2014 General Electric Company. All rights reserved.
Page 2
GE
EHHD024A0A Series: DC-DC Converter Power Module
18 to 75V
dc
Input; 5V
dc
, 24A, 120W Output
Electrical Specifications
(continued)
Datasheet
Unless otherwise indicated, specifications apply at V
IN
= 48Vdc, resistive load, and T
A
= 25°C conditions.
Parameter
Nominal Output Voltage Set-point
V
IN
= 24V to 48V I
O
=I
O, max
, T
A
=25°C)
Output Voltage
(Over all operating input voltage, resistive load, and temperature
conditions until end of life)
Adjustment Range (*Vin > 20V)
Selected by external resistor
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
Measured with 10uF Tantalum||1uF ceramic
(V
IN
=24 to 48, I
O
=80% I
O, max
, T
A
=25)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
Output Current
Output Current Limit Inception (Hiccup Mode )
(V
O
= 90% of V
O, set
)
Output Short-Circuit Current
(V
O
≤250mV)
( Hiccup Mode )
Efficiency
V
IN
=24V, T
A
=25°C, I
O
=24A, V
O
= 5V
V
IN
=48V, T
A
=25°C, I
O
=24A, V
O
= 5V
Switching Frequency
Dynamic Load Response
(dI
o
/dt=0.1A/μs; V
IN
= 24V or 48V; T
A
=25°C; C
O
>100μF)
Load Change from Io= 50% to 75% or 25% to 50% of I
o,max
Peak Deviation
Settling Time (Vo<10% peak deviation)
All
All
V
pk
t
s
⎯
⎯
3
800
⎯
⎯
% V
O, set
μs
Device
All
All
All
Symbol
V
O, set
V
O
V
O, adj
Min
4.93
-3.0
-10
Typ
5
⎯
Max
5.07
+3.0
+10*
Unit
V
dc
% V
O, set
% V
O, set
All
All
All
⎯
⎯
⎯
⎯
⎯
⎯
±0.2
±0.2
±1.5
% V
O, set
% V
O, set
% V
O, set
All
All
All
All
5
All
C
O, max
I
O
I
O, lim
I
O, s/c
0
0
26.5
30
100
⎯
10,000
24
29
1.2
mV
rms
mV
pk-pk
μF
A
dc
A
dc
A
rms
All
All
All
η
η
f
sw
92
91.5
280
%
%
kHz
Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
I/O Isolation Voltage (100% factory Hi-pot tested)
Device
All
All
All
Symbol
C
iso
R
iso
All
Min
⎯
10
⎯
Typ
1000
⎯
⎯
Max
⎯
⎯
2250
Unit
pF
MΩ
V
dc
General Specifications
Parameter
Calculated Reliability based upon Telcordia SR-332 Issue 2: Method
I
Case 3 (I
O
=80%I
O, max
, T
A
=40°C, airflow = 200 lfm, 90% confidence)
Weight (Open Frame)
Weight (with Heatplate)
Device
All
All
All
All
Symbol
FIT
MTBF
Min
Typ
112.7
8,869,389
23(0.8)
37(1.3)
Max
Unit
10
9
/Hour
s
Hours
g (oz.)
g (oz.)
July 9, 2014
©2014 General Electric Company. All rights reserved.
Page 3
GE
EHHD024A0A Series: DC-DC Converter Power Module
18 to 75V
dc
Input; 5V
dc
, 24A, 120W Output
Feature Specifications
Datasheet
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See
Feature Descriptions for additional information.
Parameter
Remote On/Off Signal Interface
(V
IN
=V
IN, min
to V
IN, max
; open collector or equivalent,
Signal referenced to V
IN-
terminal)
Negative Logic: device code suffix “1”
Logic Low = module On, Logic High = module Off
Positive Logic: No device code suffix required
Logic Low = module Off, Logic High = module On
Logic Low - Remote On/Off Current
Logic Low - On/Off Voltage
Logic High Voltage – (Typ = Open Collector)
Logic High maximum allowable leakage current
Turn-On Delay and Rise Times
(I
O
=I
O, max ,
V
IN
=V
IN, nom,
T
A
= 25
o
C)
Case 1: Input power is applied for at least 1 second,
and then the On/Off input is set from OFF to ON
(T
delay
= on/off pin transition until V
O
= 10% of V
O, set
)
Case 2: On/Off input is set to Logic Low (Module
ON) and then input power is applied (T
delay
from
instant at which V
IN
= V
IN, min
until V
o
=10% of V
O,set
)
Output voltage Rise time (time for V
o
to rise from 10%
of V
o,set
to 90% of V
o, set
)
Output voltage overshoot – Startup
I
O
= I
O, max
; V
IN
=V
IN, min
to V
IN, max
, T
A
= 25
o
C
Remote Sense Range
Output Overvoltage Protection
1
Overtemperature Protection – Hiccup Auto Restart
Open
frame
Heat
Plate
All
T
ref
T
ref
V
UVLO
⎯
15
1
All
V
OVLO
76
⎯
1
79
81
2
⎯
⎯
Vdc
Vdc
Vdc
17.5
15.5
2
V
dc
V
dc
V
dc
135
120
O
Device
Symbol
Min
Typ
Max
Unit
All
All
All
All
I
on/off
V
on/off
V
on/off
I
on/off
⎯
-0.7
2.5
⎯
⎯
5
⎯
0.15
0.6
6.7
20
mA
V
dc
V
dc
μA
All
T
delay
—
35
—
msec
All
All
All
All
All
T
delay
T
rise
—
—
35
20
—
-
msec
msec
3
10
% V
O, set
% V
O, set
V
dc
V
SENSE
V
O, limit
5.9
⎯
7.0
C
C
O
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
Input Overvoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
1
–
Module complies with 7Vmax with Trim Pin short to Sense+, with and without external cap. For Open Loop condition max OVP was 7.3V with min. 220µF external cap
July 9, 2014
©2014 General Electric Company. All rights reserved.
Page 4
GE
EHHD024A0A Series: DC-DC Converter Power Module
18 to 75V
dc
Input; 5V
dc
, 24A, 120W Output
Characteristic Curves
Datasheet
The following figures provide typical characteristics for the EHHD024A0A (5V, 24A) at 25
O
C. The figures are identical for either
positive or negative remote On/Off logic.
95
Vin=18V
90
EFFICIENCY,
η
(%)
85
Vin=24V
80
Vin=36V
Vin=48V
Vin=75V
75
70
0
4
8
12
16
20
24
OUTPUT CURRENT, I
O
(A)
OUTPUT CURRENT
Io(A) (5A/div)
OUTPUT VOLTAGE
V
O
(V) (200mV/div)
TIME, t (200µs/div)
Figure 1. Converter Efficiency versus Output Current.
Figure 4. Transient Response to 0.1A/µS Dynamic Load Change
from 50% to 75% to 50% of full load, Vin=48V.
18Vin
On/Off VOLTAGE
V
On/Off
(V) (5V/div)
OUTPUT VOLTAGE
V
O
(V) (2V/div)
24Vin
OUTPUT VOLTAGE
V
O
(V) (50mV/div)
48Vin
75Vin
TIME, t (2μs/div)
TIME, t (10ms/div)
Figure 2. Typical output ripple and noise (I
o
= I
o,max
).
Figure 5. Typical Start-up Using Remote On/Off, negative logic
version shown (V
IN
= 48V, I
o
= I
o,max
).
OUTPUT VOLTAGE
V
O
(V) (200mV/div)
OUTPUT CURRENT
Io(A) (5A/div)
TIME, t (200µs/div)
OUTPUT VOLTAGE
V
O
(V) (2V/div)
INPUT VOLTAGE
V
IN
(V) (20V/div)
TIME, t (10ms/div)
Figure 3. Transient Response to 0.1A/µS Dynamic Load
Change from 50% to 75% to 50% of full load, Vin=24V
Figure 6. Typical Start-up Using Input Voltage (V
IN
= 48V, I
o
=
I
o,max
).
July 9, 2014
©2014 General Electric Company. All rights reserved.
Page 5
PCB Design
京公网安备 11010802033920号
EEWORLD
