GE
Data Sheet
QHHD019A0B Hammerhead* Series; DC-DC Converter Power Modules
18Vdc –75Vdc input; 12Vdc output; 19A Output Current
Features
Compliant to RoHS II EU “Directive 2011/65/EU (-Z versions)
Compliant to REACH Directive (EC) No 1907/2006
Small Size and low profile, follows industry standard DOSA 1/4
th
Brick footprint
58.4 mm x 36.8 mm x 10.2 mm
(2.30 in x 1.45 in x 0.40 in)
Ultra-wide Input Voltage Range, 18V
dc
to 75V
dc
No minimum load
High efficiency – 93.5% at full load
Constant switching frequency
Low output ripple and noise
Paste-in-hole reflow compliant for all versions, TH pins and heat
plates
Negative Remote On/Off logic
Output overcurrent/voltage protection (hiccup)
Over-temperature protection
Output Voltage adjust: 90% to 110% of V
o,nom
Suitable for cold wall cooling using heatplate version of the
module
ANSI/UL
#
60950-1-2011 and CAN/CSA† C22.2 No. 60950-1-07,
Second Edition + A1:2011 (MOD), dated March 19, 2011; and DIN
EN 60950-1 (VDE‡ 0805 Teil 1):2011-01; EN 60950-1:2006 +
A11:2009 + A1:2010, DIN EN 60950-1/A12 (VDE 0805-
1/A12):2011-08; EN 60950-1/A12:2011-02, IEC 60950-
1(ed.2);am1:2009
CE mark meets 2006/95/EC directive
§
Meets the voltage and current requirements for ETSI 300-132-2
and complies with and licensed for Basic insulation rating per
EN60950-1
2250 Vdc Isolation tested in compliance with IEEE 802.3
¤
PoE
standards
ISO
**
9001 and ISO 14001 certified manufacturing facilities
RoHS Compliant
Applications
Hybrid power architectures
Wireless Networks
Enterprise Networks including Power over Ethernet
(PoE)
Industrial Equipment
Options
1/4
th
Brick heat plate with unthreaded inserts
1/4
th
Brick heat plate with threaded inserts
Description
The QHHD019A0B [HAMMERHEAD*] Series, quarter-brick, low-height power modules are isolated dc-dc converters which provide a
single, precisely regulated output voltage over an ultra-wide input voltage range of 18-75V
dc
. The QHHD019A0B provides 12V
dc
nominal output voltage rated for 19A
dc
output current. The module incorporates GE’s vast heritage for reliability and quality, while
also using the latest in technology, and component and process standardization to achieve highly competitive cost. The open frame
module construction, enable designers to develop cost and space efficient solutions. The module achieves typical full load efficiency
greater than 93% at V
IN
=24V
dc
and V
IN
=48V
dc
. Standard features include remote On/Off, remote sense, output voltage adjustment,
overvoltage, overcurrent and over temperature protection. An optional heat plate allows for external standard, quarter-brick heat
sink attachment to achieve higher output current in high temperature applications.
*
Trademark of General Electric Company.
#
†
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.
§
This product is intended for integration into end-user equipment . All of the required procedures of end-use equipment should be followed.
¤ IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Incorporated.
** ISO is a registered trademark of the International Organization of Standards
July 22, 2014
©2014 General Electric Company. All rights reserved.
Page 1
GE
QHHD019A0B Series: DC-DC Converter Power Module
18 to 75V
dc
Input; 12V
dc
, 19A, 225W Output
Absolute Maximum Ratings
Data Sheet
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 technical requirement. Exposure to absolute maximum ratings for extended periods can adversely affect the device
reliability.
Parameter
Input Voltage (Continuous)
Transient (100ms)
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
I/O Isolation Voltage (100% factory Hi-Pot tested)
All
All
T
stg
⎯
-55
⎯
125
2250
°C
Vdc
Device
All
All
All
Symbol
V
IN
V
IN, trans
T
A
Min
-0.3
-0.3
-40
Max
80
100
85
Unit
Vdc
Vdc
°C
Electrical Specifications
Unless otherwise indicated, specifications apply at VIN = 48Vdc, resistive load, and TA=25C conditions with airflow=300LFM apply
over all operating input voltage, resistive load, and temperature conditions.
Parameter
Operating Input Voltage
Input No Load Current
V
IN
= 24V
dc
, (I
O
= 0, module enabled)
V
IN
= 48V
dc
, (I
O
= 0, module enabled)
Input Stand-by Current
(V
IN
= 24 to 48V
dc
, module disabled)
Maximum Input Current (V
IN
=18V
dc
, I
O
=I
O, max
)
12.0 V
O
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance; V
IN
=0V to
75V
dc
, I
O
= I
Omax
; see Test configuration section)
Input Ripple Rejection (120Hz)
EMC, EN55022
All
All
All
I
2
t
30
60
See EMC Considerations section
14
0.1
A
2
s
mA
p-p
dB
All
All
All
I
IN,No load
I
IN,No load
I
IN,stand-by
180
120
8
mA
mA
mA
Device
All
Symbol
V
IN
Min
18
Typ
24/48
Max
75
Unit
V
dc
A
dc
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
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 fast-acting fuse with a maximum rating of 25A
(voltage rating 125Vac) in the ungrounded input lead
.
(Littelfuse Part #0456025, Surface Mount 456 Series - Nano
2
®
or equivalent,
see Safety Considerations section)
July 22, 2014
©2014 General Electric Company. All rights reserved.
Page 2
GE
QHHD019A0B Series: DC-DC Converter Power Module
18 to 75V
dc
Input; 12V
dc
, 19A, 225W Output
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
(V
IN
=24 to 48V
dc
, 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)
Data Sheet
Device
12 V
O
All
12 Vo
Symbol
V
O, set
V
O
V
O, adj
Min
11.82
-3.0
-10
Typ
12.00
⎯
Max
12.18
+3.0
+10*
Unit
V
dc
V
dc
% V
O, set
% V
O, set
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 48V
dc
, I
O
=80%I
O, max
, T
A
=25°C)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
Output Current
All
All
All
⎯
⎯
⎯
0.05
0.05
1.0
0.2
0.2
1.5
% V
O, set
% V
O, set
% V
O, set
12 V
O
12 V
O
12 V
O
C
O, max
I
o
I
O, lim
I
O, s/c
⎯
⎯
0
0
⎯
⎯
⎯
⎯
23
75
160
5000
19.0
⎯
mV
rms
mV
pk-pk
μF
A
dc
A
dc
A
rms
Output Current Limit Inception (Hiccup Mode)
12 V
O
Output Short-Circuit Current
V
O
≤
250 mV @ 25
o
C
Efficiency
V
IN
=24V
dc
, T
A
=25°C, I
O
=I
O, max
V
IN
=48V
dc
, T
A
=25°C, I
O
=I
O, max
12.0V
O
Switching Frequency (Fixed)
V
IN
=24 to 48V
dc
and I
O
= I
O, max
Dynamic Load Response
(ΔI
O
/Δt=0.1A/μs, V
IN
=24 to 48V
dc
, T
A
=25°C, C
O
=0uF)
Load Change from I
O
= 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
⎯
⎯
3.0
800
⎯
⎯
% V
O, set
μs
All
η
f
sw
⎯
93
250
⎯
⎯
%
kHz
12.0V
O
η
93.5
⎯
%
All
⎯
1.2
Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
I/O Isolation Voltage
Symbol
C
iso
R
iso
All
Min
⎯
10
⎯
Typ
1000
⎯
⎯
Max
⎯
⎯
2250
Unit
pF
MΩ
Vdc
July 22, 2014
©2014 General Electric Company. All rights reserved.
Page 3
GE
QHHD019A0B Series: DC-DC Converter Power Module
18 to 75V
dc
Input; 12V
dc
, 19A, 225W Output
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 (Heat Plate)
FIT
MTBF
⎯
⎯
Min
Typ
128.7
7,769,746
43.1 (1.52)
58 (2.05)
Data Sheet
Max
Unit
10
9
/Hours
Hours
⎯
⎯
g (oz.)
g (oz.)
Feature Specifications
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
Logic Low = module Off, Logic High = module On
Logic Low - Remote On/Off Current (V
on/off
= -0.7V
dc
)
Logic Low - On/Off Voltage
Logic High Voltage (I
on/off
= 0A
dc
)
Logic High maximum allowable leakage current
Turn-On Delay and Rise Times
(I
O
=80% of I
O, max
, T
A
=25°C)
Case 1: Input power is applied for at least 1second, 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 Module ON, and then input
power is applied
(T
delay
= V
IN
reaches 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
(I
O
=80% of I
O, max
, V
IN
= 24 to 48V
dc
, T
A
=25°C)
Output Overvoltage Protection
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
1
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
⎯
⎯
⎯
⎯
⎯
0.15
0.6
6.7
20
mA
V
dc
V
dc
μA
All
T
delay
Case1
⎯
35
ms
All
T
delay
Case2
⎯
35
ms
All
T
rise
⎯
20
3
ms
% V
O, set
12.0V
O
V
O, limit
13.6
1
⎯
16.6
V
dc
All
All
All
V
uv/on
V
uv/off
V
hyst
⎯
15
1.0
17.5
15.5
⎯
18
⎯
V
dc
V
dc
V
dc
– OVP voltages lower than 13.6Vin for 18-20Vin
July 22, 2014
©2014 General Electric Company. All rights reserved.
Page 4
GE
QHHD019A0B Series: DC-DC Converter Power Module
18 to 75V
dc
Input; 12V
dc
, 19A, 225W Output
Characteristic Curves
The following figures provide typical characteristics for the QHHD019A0B (12V, 19A) at 25
O
C.
Data Sheet
EFFICIENCY,
η
(%)
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.
OUTPUT VOLTAGE
V
O
(V) (5V/div)
On/Off VOLTAGE
V
On/Off
(V) (2V/div)
18Vin
24Vin
OUTPUT VOLTAGE
V
O
(V) (100mV/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) (5V/div)
OUTPUT CURRENT
Io(A) (5A/div)
OUTPUT VOLTAGE
V
O
(V) (200mV/div)
TIME, t (200µs/div)
InTPUT VOLTAGE
V
IN
(V) (20V/div)
TIME, t (20ms/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 22, 2014
©2014 General Electric Company. All rights reserved.
Page 5
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