KSTW010A0A Barracuda™ Series; DC-DC Converter Power Modules
36-75Vdc Input; 5.0Vdc, 10A Output
RoHS Complian
Applications
Wireless Networks
Hybrid power architectures
Optical and Access Network Equipment
Enterprise Networks including Power over Ethernet (PoE)
Industrial markets
Options
Negative Remote On/Off logic (preferred)
Surface Mount/Tape and Reel (-SR Suffix)
Auto-restart Over current/Over voltage protections
(preferred)
Shorter through hole pin trim
Features
Compliant to RoHS II EU “Directive 2011/65/EU (-Z versions)
Compliant to REACH Directive (EC) No 1907/2006
Wide Input Voltage Range, 36V
No minimum load
High efficiency – 91% at full load (V
Constant switching frequency
Low output ripple and noise
Small Size and low profile, follows DOSA standard 1/16th
footprint
33.0 mm x 22.9 mm x 9.3 mm
(1.30 in x 0.9 in x 0.37 in)
Surface mount (SMT) or Through hole (TH)
Reflow process compliant, both SMT and TH versions
Positive Remote On/Off logic
Output overcurrent/voltage protection (hiccup)
Over-temperature protection
Output Voltage adjust: 80% to 110% of V
Wide operating temperature range (-40°C to 85°C)
UL*Recognized to UL60950-1, CAN/CSA
and EN60950-1(VDE
‡
0805-1) Licensed
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
to 75Vdc
dc
IN
=48Vdc)
o,nom
†
C22.2 No.60950-1,
§
¤
Description
The KSTW010A0A series power modules are isolated DOSA compliant 1/16th brick dc-dc converters that operate over a wide input
voltage range of 36 V
the input, allowing versatile polarity configurations and grounding connections. The modules exhibit high efficiency of 91% typical
at full load. Built-in filtering for both input and output minimizes the need for external filtering. The module is fully self-protected
with output over-current and over-voltage, over-temperature and input under voltage shutdown control. Optional features include
negative or positive on/off logic and SMT connections.
* 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.
-75Vdc and provide a single precisely regulated output voltage at 5.0Vdc. The output is fully isolated from
KSTW010A0A Barracuda™ Series; DC-DC Converter Power Modules
36-75Vdc Input; 5.0Vdc, 10A Output
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 Device Symbol Min Max Unit
Input Voltage (Continuous) All V
Transient (100ms) All V
Operating Ambient Temperature All T
(see Thermal Considerations section)
Storage Temperature All T
I/O Isolation Voltage (100% factory Hi-Pot tested) All
IN
IN, trans
A
stg
Electrical Specifications
Unless otherwise indicated, specifications apply at VIN = 48Vdc, resistive load, and TA = 25°C conditions.
Parameter Device Symbol Min Typ Max Unit
Operating Input Voltage All VIN 36 48 75 Vdc
Input No Load Current
(VIN = 48Vdc IO = 0A, module enabled)
Input Stand-by Current
(VIN = 48Vdc, module disabled)
Maximum Input Current (VIN=36Vdc, IO= I
Inrush Transient All I2t 0.05 A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance; V
see Test configuration section)
Input Ripple Rejection (120Hz) All 60 dB
) All I
O,MAX
=0V to 75Vdc, IO= I
IN
Omax
;
All I
All I
All 30 mA
IN,No load
6 8 mA
IN,stand-by
IN, MAX
-0.3 80 Vdc
-0.3 100 Vdc
-40 85 °C
-55 125 °C
2250 Vdc
40 50 mA
1.6 Adc
p-p
EMC, EN55022 See EMC Considerations section
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 6A
(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.
KSTW010A0A Barracuda™ Series; DC-DC Converter Power Modules
36-75Vdc Input; 5.0Vdc, 10A Output
General Specifications
Parameter
Calculated Reliability based upon Telcordia SR-332 Issue 2: Method I Case 3
(I
O
=80%I
, TA=40°C, airflow = 200 lfm, 90% confidence)
O, max
Weight
FIT 272.0 10
MTBF 3,677,136 Hours
Min Typ Max Unit
9
/Hours
13 (0.46)
g (oz.)
Feature Specifications
Unless otherwise indicated, specifications apply at VIN = 48Vdc, resistive load, and TA = 25°C conditions. See Feature Descriptions for
additional information.
Parameter Device Symbol Min Typ Max Unit
Remote On/Off Signal Interface
(VIN=V
Signal referenced to V
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
Turn-On Delay and Rise Times
(IO=80% of I
Case 1: Input power is applied for at least 1second, and then the
On/Off input is set from OFF to ON (T
V
O
to V
IN, min
Logic Low - Remote On/Off Current (V
; open collector or equivalent,
IN, max
terminal)
IN-
= -0.7Vdc) All I
on/off
Logic Low - On/Off Voltage All V
Logic High Voltage (I
= 0Adc) All V
on/off
Logic High maximum allowable leakage current All I
)
O, max
= 10% of V
O, set
= on/off pin transition until
delay
)
All
on/off
on/off
on/off
on/off
T
Case1
delay
-0.7
2.4
0.15 mA
0.8 Vdc
7 Vdc
25 μA
25 50 ms
Case 2: On/Off input is set to Module ON, and then input power is
applied
= VIN reaches V
(T
delay
until VO = 10% of V
IN, min
O,set
)
Output voltage Rise time (time for Vo to rise from 10%
of V
to 90% of V
o,set
o, set
)
All
All T
Output Voltage Overshoot
(IO=80% of I
Output Overvoltage Protection
, VIN= 48Vdc)
O, max
All V
Input Undervoltage Lockout
Turn-on Threshold All V
Turn-off Threshold All V
Hysterisis All V
T
delay
Case2
O, limit
uv/on
uv/off
rise
hyst
6.0
30 32
35 50 ms
5 10 ms
Vdc
Vdc
O, set
dc
3 % V
7.0 Vdc
34 36 V
2.0
Note: 1.The module requires a minimum of 680 μF external output capacitor to avoid exceeding the OVP maximum limits during startup into open
loop fault conditions.