dc-dc Converters; 36 to 75 Vdc Input, 1.8 Vdc Output; 18 W to 36 W
RoHS Compliant
Features
n
Compatible with RoHS EU Directive 2002/95/EC (-Z Ver-
sions)
Compatible in RoHS EU Directive 2002/95/EC with lead
solder exemption (non -Z versions)
Small size: 61.0 mm x 57.9 mm x 12.7 mm
(2.40 in. x 2.28 in. x 0.50 in.)
High power density
Very high efficiency: 88% typical
Low output noise
Constant frequency
Industry-standard pinout
Metal baseplate
2:1 input voltage range
Overtemperature protection
Overcurrent /Overvoltage protection
Remote sense
Remote on/off
Adjustable output voltage
Case ground pin
Auto-restart after overcurrent shutdown
ISO*
9001 Certified manufacturing facilities
UL
†
60950 Recognized,
CSA
‡
C22.2 No. 60950-00 Cer-
tified, and
VDE
§
0805 (IEC60950) Licensed
CE mark meets 73/23/EEC and 93/68/EEC directives**
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The JAHW Series Power Modules use advanced, surface-
mount technology and deliver high-quality, efficient, and
compact dc-dc conversion.
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Applications
n
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Distributed power architectures
Communications equipment
Computer equipment
Options
n
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Choice of remote on/off logic configuration
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Description
The JAHW050Y, JAHW075Y, and JAHW100Y Power Modules are dc-dc converters that operate over an input voltage
range of 36 Vdc to 75 Vdc and provide a precisely regulated dc output. The outputs are fully isolated from the inputs, allow-
ing versatile polarity configurations and grounding connections. The modules have maximum power ratings from 18 W to 36
W at a typical full-load efficiency of 88%.
The sealed modules offer a metal baseplate for excellent thermal performance. Threaded-through holes are provided to
allow easy mounting or addition of a heat sink for high-temperature applications. The standard feature set includes remote
sensing, output trim, and remote on/off for convenient flexibility in distributed power applications.
*
ISO
is a registered trademark of the International Organization for Standardization.
†
UL
is a registered trademark of Underwriters Laboratories, Inc.
‡
CSA
is a registered trademark of Canadian Standards Aisne.
§
VDE
is a trademark of Verband Deutscher Elektrotechniker e.V.
** This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should be followed. (The
CE mark is placed on selected products.)
JAHW050Y, JAHW075Y, and JAHW100Y Power Modules:
dc-dc Converters; 36 to 75 Vdc Input, 1.8 Vdc Output; 18 W to 36 W
Data Sheet
April 2008
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute 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 device reliability.
Parameter
Input Voltage:
Continuous
Transient (100 ms)
Operating Case Temperature
(See Thermal Considerations section.)
Storage Temperature
I/O Isolation Voltage (for 1 minute)
Symbol
V
I
V
I, trans
T
C
T
stg
—
Min
—
—
–40
–55
—
Max
80
100
100
125
1500
Unit
Vdc
V
°C
°C
Vdc
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Table 1. Input Specifications
Parameter
Operating Input Voltage
Maximum Input Current
(V
I
= 0 V to 75 V; I
O
= I
O, max
):
JAHW050Y (See Figure 1.)
JAHW075Y (See Figure 2.)
JAHW100Y (See Figure 3.)
Inrush Transient
Input Reflected-ripple Current, Peak-to-peak
(5 Hz to 20 MHz, 12 µH source impedance;
see Figure 17.)
Input Ripple Rejection (120 Hz)
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone
operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fus-
ing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The
safety agencies require a normal-blow fuse with a maximum rating of 6 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 for further information.
Symbol
V
I
Min
36
Typ
48
Max
75
Unit
Vdc
I
I, max
I
I, max
I
I, max
i
2
t
I
I
—
—
—
—
—
—
—
—
—
5
0.9
1.3
1.7
1.0
—
A
A
A
A
2
s
mAp-p
—
—
60
—
dB
2
Lineage Power
Data Sheet
April 2008
JAHW050Y, JAHW075Y, and JAHW100Y Power Modules:
dc-dc Converters; 36 to 75 Vdc Input, 1.8 Vdc Output; 18 W to 36 W
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter
Output Voltage Set Point
(V
I
= 48 V; I
O
= I
O, max
; T
C
= 25 °C)
Output Voltage
(Over all operating input voltage, static resistive
load, and temperature conditions until end of
life. See Figure 19.)
Output Regulation:
Line (V
I
= 36 V to 75 V)
Load (I
O
= I
O, min
to I
O, max
)
Temperature (T
C
= –40 °C to +100 °C)
Output Ripple and Noise Voltage
(See Figure 18.):
RMS
Peak-to-peak (5 Hz to 20 MHz)
External Load Capacitance
Output Current
(At I
O
< I
O, min
, the modules may exceed output
ripple specifications.)
Output Current-limit Inception
(V
O
= 90% of V
O, nom
)
Output Short-circuit Current (V
O
= 250 mV)
Efficiency (V
I
= 48 V; I
O
= I
O, max
; T
C
= 70 °C)
Device
All
All
Symbol
V
O, set
V
O
Min
1.76
1.7
Typ
1.8
—
Max
1.84
1.9
Unit
Vdc
Vdc
All
All
All
—
—
—
—
—
—
0.01
0.05
15
0.1
0.2
50
%V
O
%V
O
mV
All
All
All
JAHW050Y
JAHW075Y
JAHW100Y
JAHW050Y
JAHW075Y
JAHW100Y
All
JAHW050Y
JAHW075Y
JAHW100Y
All
—
—
—
I
O
I
O
I
O
I
O, cli
I
O, cli
I
O, cli
—
η
η
η
—
—
—
0
0.5
0.5
0.5
—
—
—
—
—
—
—
—
—
—
—
—
—
—
15
†
20
†
26
†
120
86
88
88.4
230
50
100
*
mVrms
mVp-p
µF
A
A
A
A
A
A
%I
O, max
%
%
%
kHz
10
15
20
—
—
—
—
—
—
—
—
Switching Frequency
Dynamic Response
(ΔI
O
/Δt = 1 A/10 µs, V
I
= 48 V, T
C
= 25 °C;
tested with a 10 µF aluminum and a 1.0 µF
tantalum capacitor across the load.):
Load Change from I
O
= 50% to 75% of I
O, max
:
Peak Deviation
Settling Time (V
O
< 10% of peak deviation)
Load Change from I
O
= 50% to 25% of I
O, max
:
Peak Deviation
Settling Time (V
O
< 10% of peak deviation)
All
All
All
All
—
—
—
—
—
—
—
—
200
200
200
200
—
—
—
—
mV
µs
mV
µs
* Consult your sales representative or the factory.
† These are typical test results. In some situations, actual numbers may differ.
Table 3. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
-
Min
—
10
Typ
2500
—
Max
—
—
Unit
pF
MΩ
Lineage Power
3
JAHW050Y, JAHW075Y, and JAHW100Y Power Modules:
dc-dc Converters; 36 to 75 Vdc Input, 1.8 Vdc Output; 18 W to 36 W
Data Sheet
April 2008
General Specifications
Parameter
Calculated MTBF (I
O
= 80% of I
O, max
; T
C
= 40 °C)
Weight
—
Min
Typ
3,000,000
—
100 (3.5)
Max
Unit
hours
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.
Table 4. Feature Specifications
Parameter
Remote On/Off Signal Interface
(V
I
= 0 V to 75 V; open collector or equivalent compatible;
signal referenced to V
I
(–) terminal; see Figure 20 and
Feature Descriptions.):
JAHWxxxY1 Preferred Logic:
Logic Low—Module On
Logic High—Module Off
JAHWxxxY Optional Logic:
Logic Low—Module Off
Logic High—Module On
Logic Low:
At I
on/off
= 1.0 mA
At V
on/off
= 0.0 V
Logic High:
At I
on/off
= 0.0 µA
Leakage Current
Turn-on Time (See Figure 16.)
(I
O
= 80% of I
O, max
; V
O
within ±1% of steady state)
Output Voltage Adjustment (See Feature Descriptions.):
Output Voltage Remote-sense Range
Output Voltage Set-point Adjustment Range (trim)
Output Overvoltage Protection
Overtemperature Protection
(See Feature Descriptions.)
* These are typical test results. In some situations, actual numbers may differ.
Symbol
Min
Typ
Max
Unit
V
on/off
I
on/off
V
on/off
I
on/off
—
0
—
—
—
—
—
—
—
—
20
1.2
1.0
15
50
35
V
mA
V
µA
ms
—
—
V
O, sd
T
C
—
60
2.1
—
—
—
2.4*
110
0.5
110
4.0
—
V
%V
O, nom
V
°C
Solder, Cleaning, and Drying Considerations
Post solder cleaning is usually the final circuit-board assembly process prior to electrical testing. The result of inad-
equate circuit-board cleaning and drying can affect both the reliability of a power module and the testability of the
finished circuit-board assembly. For guidance on appropriate soldering, cleaning, and drying procedures, refer to
the
Board-Mounted Power Modules Soldering and Cleaning
Application Note (AP97-021EPS).
4
Lineage Power
Data Sheet
April 2008
JAHW050Y, JAHW075Y, and JAHW100Y Power Modules:
dc-dc Converters; 36 to 75 Vdc Input, 1.8 Vdc Output; 18 W to 36 W
Characteristic Curves
The following figures provide typical characteristics for the power modules. The figures are identical for both on/off
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