GE Industrial Solutions KSTW004A2B User Manual

GE

Data Sheet

KSTW004A2B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12Vdc, 4.2A, 50W Output

RoHS Compliant

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

 Compliant to IPC-9592A (September2008), Category 2, Class II

 Ultra-wide Input Voltage Range, 36V

 No minimum load

 High efficiency – 90% 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)

 ANSI/ UL* 60950-1-2011 Recognized, CAN/CSA† C22.2

No.60950-1-07, Second Edition + A1:2011 (MOD) Certified IEC
60950-1:2005 (2nd edition) + A1:2009 and EN 60950-1:2006
+A11:2009 +A1:2010 +A12:2011, and VDE‡0805 (EN60950-1
3rd edition) 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

standards

 ISO** 9001 and ISO 14001 certified manufacturing facilities

to 75Vdc

dc

=48Vdc)

IN

§

o,nom

¤

PoE

Description

The KSTW004A2B series power modules are isolated DOSA compliant 1/16th brick dc-dc converters that operate over an ultra­wide input voltage range of 36 V
isolated from the input, allowing versatile polarity configurations and grounding connections. The modules exhibit high efficiency
of 90% 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 12Vdc. The output is fully

dc

April 1, 2013 ©2012 General Electric Company. All rights reserved. Page 1

GE

Data Sheet

KSTW004A2B Barracuda™

Series; DC-DC Converter Power Modules

36-75Vdc Input; 12Vdc, 4.2A, 50W 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

 

-0.3 80 Vdc

-0.3 100 Vdc

-40 85 °C

-55 125 °C

2250 Vdc

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

(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

IN,stand-by

IN, MAX

40 50 mA

8 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.

April 1, 2013 ©2012 General Electric Company. All rights reserved. Page 2

GE

Data Sheet

KSTW004A2B Barracuda™

Series; DC-DC Converter Power Modules

36-75Vdc Input; 12Vdc, 4.2A, 50W Output

Electrical Specifications (continued)

Unless otherwise indicated, specifications apply at VIN = 48Vdc, resistive load, and TA = 25°C conditions.

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point

=48Vdc, IO=I

(V

IN

O, max

,)

Output Voltage

(Over all operating input voltage, resistive load, and temperature

conditions until end of life)
Adjustment Range
Selected by external resistor
Remote Sense Range
Output Regulation

Line (VIN=V

Load (IO=I

Temperature (T

IN, min

O, min

to V

) All

IN, max

to I

) All

O, max

to T

ref=TA, min

) All

A, max

Output Ripple and Noise on nominal output

Measured with 10uF Tantalum||1uF ceramic

(VIN=48Vdc, IO=80%I

)

O, max

RMS (5Hz to 20MHz bandwidth)

Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance (see Note 1 in Feature Specifications) All C
Output Current All I
Output Current Limit Inception (Hiccup Mode) All I

Output Short-Circuit Current (VO ≤ 250 mV) All I

Efficiency (VIN=48Vdc, IO=I

) All η 89.0 90.0

O, max

Switching Frequency (Fixed)
VIN=48Vdc, IO= I

O, max

Dynamic Load Response
(Io/t=0.1A/s, VIN=48Vdc)

Load Change from Io= 50% to 75% or 25% to 50% of I

:

o,max

Peak Deviation All Vpk

Settling Time (Vo<10% peak deviation) All ts

All V

All V

All V

All

O, set

O

O, adj

+10 % V

All

All f

O, max

o

O, lim

O, s/c

sw

11.82 12.00 12.36 Vdc

-3.0

-20



 

 
 

0
0

4.6







0.05 0.2 % V

0.05 0.2 % V





2.5

350

+3.0 % V

+10 % V

1.0 % V

40 mV

150 mV

2200 μF

4.2 Adc

5.9 Adc






A

%

kHz

O, set

O, set

O, set

O, set

O, set

O, set

rms

pk-pk

rms




3.0

400




% V

O, set

s

Isolation Specifications

Parameter Symbol Min Typ Max Unit

Isolation Capacitance C

Isolation Resistance R

I/O Isolation Voltage All

iso

iso



10

 

1000

 



pF

MΩ

2250 Vdc

General Specifications

Parameter

Calculated Reliability based upon Telcordia SR-332 Issue 2: Method I Case 3

=80%I

(I

O

Weight

, TA=40°C, airflow = 200 lfm, 90% confidence)

O, max

Min Typ Max Unit

FIT 261.1 10

9

/Hours

MTBF 3,829,239 Hours



13 (0.46)



g (oz.)

April 1, 2013 ©2012 General Electric Company. All rights reserved. Page 3

GE

Data Sheet

KSTW004A2B Barracuda™

Series; DC-DC Converter Power Modules

36-75Vdc Input; 12Vdc, 4.2A, 50W Output

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

TBD Vdc

25 μA

30 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

1

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





14.0



30 32



20 50 ms

5 10 ms

3 % V



17.0 Vdc

34 36 V



2.0



Vdc

Vdc

O, set

dc

Note: 1.The module requires a minimum of 220 μF external output capacitor to avoid exceeding the OVP maximum limits during startup into open
loop fault conditions.

April 1, 2013 ©2012 General Electric Company. All rights reserved. Page 4

G

K

3

A

C

T

p

On/Off VOLTAGE

OUTPUT VOLTAGE

E

n

s

a

v

i

On/Off VOLTAGE

OUTPUT VOLTAGE

c

a

V

s

O

P

n

T

s

4

a

5

2

t

O

s

u

e

e

v

C

A

B

r

r

n

VIN

(V) (20V/div)

V

O

(V) (5V/div )

r

)

r

e

a

e

t

VIN

(V) (20V/div)

V

O

(V) (5V/div )

t

e

g

O

n

%

t

e

t

V

e

5

V

=

Data Sh

et

STW00

6-75Vdc I

haracteri

he following fi
ositive or neg

EFFICIENCY,  (%)

Figure 1. Con

4A2B B

put; 12.0

tic Curve

gures provide

tive remote

OUT

verter Efficie

rracud

dc, 4.2A,

typical charac

n/Off logic.

UT CURRENT, IO

cy versus Ou

™ Serie

0W Outp

teristics for th

(A)

put Current.

; DC-D

t

KSTW004A2

(A)

IN

INPUT CURRENT, I

Figu

e 2. Convert

(V) (200mV/div)

O

Conve

(12.0V, 4.2A)

ter Pow

t 25oC. The fi

INPUT V

r Input Curre

r Modu

ures are iden

LTAGE, VIN (V)

t versus Inpu

les

ical for either

t Voltage.

(V) (100mV/div)

O

OUTPUT VOLTAGE

V

Figure 3. Typ

(V) (5V/div)

O

(V) (2V/div) V

On/Off

V

Figure 5.Typi
logic version

cal output rip

al Start-up U

shown (VIN =

IME, t (2s/div)

ple and noise

TI

ME, t (10ms/div)

ing Remote

8V, Io = I

o,max

(Io = I

)

.

o,max

).

n/Off, negati

OUTPUT CURRENT OUTPUT VOLTAGE

Figu
Cha
CO>1

e Figu

I

o,max

Io(A) (1A/div) V

e 4. Transien
ge from 50%

00μF

INPUT VOLTAGE OUTPUT VOLTAGE

e 6. Typical S
.

TIME, t

Response to

to 75% to 50

TIME, t

art-up Using

(200µs/div)

0.1A/µS Dyna

(10ms/div)

Input Voltag

of full load,

mic Load

in=48V,

(V

IN

= 48V, I

o

pril 1, 2013

©

012 General El

ctric Company.

ll rights reserv

d.

Page