dc-dc Converters; 36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Features
s
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: 90% typical
Low output noise
Constant frequency
Industry-standard pinout
Metal baseplate
2:1 input voltage range
Overcurrent protection (hiccup mode)
Remote on/off
Adjustable output voltage
Remote sense
Output overvoltage protection (hiccup mode)
Overtemperature protection (hiccup mode)
Case ground pin
s
s
s
s
s
s
s
s
The JAHW Series Power Modules use advanced, surface-
mount technology and deliver high-quality, efficient, and
compact dc-dc conversion.
s
s
s
s
Applications
s
s
s
s
Distributed power architectures
Workstations
Computer equipment
Communications equipment
s
s
s
s
ISO*
9001 Certified manufacturing facilities
Meets the voltage and current requirements for
ETSI 300-132-2 and complies with and is Licensed
for Basic Insulation rating per EN60950 (-B version
only)
Options
s
s
s
Heat sinks available for extended operation
Choice of remote on/off logic configuration
Latching protection features
s
s
UL
†
60950 Recognized,
CSA
‡
22.2 No. 60950-00
Certified, and
VDE
§
0805 (IEC60950, IEC950)
Licensed
CE mark meets 73/23/EEC and 93/68/EEC
directives
**
Description
The JAHW050A and JAHW075A 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,
allowing versatile polarity configurations and grounding connections. The modules have maximum power rat-
ings from 50 W to 75 W at a typical full-load efficiency of 90%.
The sealed modules offer a metal baseplate for excellent thermal performance. Threaded-through holes are pro-
vided 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 Association.
§
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.)
JAHW050A and JAHW075A Power Modules:
dc-dc Converters; 36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
June 2001
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
):
JAHW050A (See Figure 1.)
JAHW075A (See Figure 2.)
Inrush Transient
Input Reflected-ripple Current, Peak-to-peak
(5 Hz to 20 MHz, 12 µH source impedance;
see Figure 12.)
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 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 for further information.
Symbol
V
I
Min
36
Typ
48
Max
75
Unit
Vdc
I
I, max
I
I, max
i
2
t
I
I
—
—
—
—
—
—
—
5
1.7
2.6
1.0
—
A
A
A
2
s
mAp-p
—
—
60
—
dB
2
Tyco Electronics Corp.
Data Sheet
June 2001
JAHW050A and JAHW075A Power Modules:
dc-dc Converters; 36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 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, resistive load,
and temperature conditions until end of life. See
Figure 14.)
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 13.):
RMS
Peak-to-peak (5 Hz to 20 MHz)
External Load Capacitance (electrolytic)
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)
Switching Frequency
Dynamic Response
(∆I
O
/∆t = 1 A/10 µs, V
I
= 48 V, T
C
= 25 °C; tested
with a 10 µF tantalum and a 1.0 µF ceramic
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)
Device
All
All
Symbol
V
O, set
V
O
Min
4.92
4.85
Typ
5.0
—
Max
5.08
5.15
Unit
Vdc
Vdc
All
All
All
—
—
—
—
—
—
0.01
0.05
15
0.1
0.2
50
%V
O
%V
O
mV
All
All
All
JAHW050A
JAHW075A
JAHW050A
JAHW075A
All
JAHW050A
JAHW075A
All
—
—
—
I
O
I
O
I
O, cli
I
O, cli
—
η
η
—
—
—
0
‡
0.5
0.5
—
—
0
—
—
—
—
—
—
—
—
12
18
—
89.5
90.4
340
50
100
*
10
15
—
—
22
—
—
—
mVrms
mVp-p
µF
A
A
A
A
A
%
%
kHz
All
All
All
All
—
—
—
—
—
—
—
—
5
200
5
200
—
—
—
—
%V
O, set
µs
%V
O, set
µs
* Stability consideration, (See Design Considerations, Output Capacitance Section)
† These are manufacturing test limits. In some situations, results may differ.
‡ Some characteristic are specified with 10
µ
F aluminum and 1
µ
F ceramic.
Table 3. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Min
—
10
Typ
2500
—
Max
—
—
Unit
pF
MΩ
Tyco Electronics Corp.
3
JAHW050A and JAHW075A Power Modules:
dc-dc Converters; 36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
June 2001
General Specifications
Parameter
Calculated MTBF (I
O
= 80% of I
O, max
; T
C
= 40 °C)
Weight
—
Min
Typ
2,000,000
—
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.
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 15 and
Feature Descriptions.):
JAHWxxxA1 Preferred Logic:
Logic Low—Module On
Logic High—Module Off
JAHWxxxA 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 11.)
(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 manufacturing test limits. In some situations, results 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
5.9*
—
—
—
—
110
0.5
110
7.0*
—
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
Tyco Electronics Corp.
Data Sheet
June 2001
JAHW050A and JAHW075A Power Modules:
dc-dc Converters; 36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Characteristic Curves
The following figures provide typical characteristics for the power modules. The figures are identical for both on/off
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
