Data Sheet
June 29, 2009
KNW013-020 (Sixteenth-Brick) Power Modules:
36 –75Vdc Input; 3.3Vdc to 5.0Vdc Output; 13A to 20A Output Current
RoHS Compliant
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to RoHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
Delivers up to 20A output current
5V(13A), 3.3V(20A)
High efficiency – 91% at 3.3V full load
Small size and low profile:
33.0 mm x 22.9 mm x 10.2 mm
(1.30 in x 0.9 in x 0.40 in)
Industry standard DOSA footprint
-20% to +10% output voltage adjustment trim
Remote on/off
Remote sense
No reverse current during output shutdown
Over temperature protection (latching)
Output overcurrent/overvoltage protection
(latching)
Wide operating temperature range (-40°C to 85°C)
2250 Vdc Isolation tested in compliance with IEEE
¤
802.3 PoE standards
Meets the voltage isolation requirements for
ETSI 300-132-2 and complies with and is licensed
for Basic Insulation rating per EN60950-1
UL*Recognized to UL60950-1, CAN/CSA
†
C22.2
No.60950-1,
and EN60950-1(
VDE
‡
0805-1)
Licensed
CE mark meets 2006/95/EC directive
§
ISO** 9001 and ISO 14001 certified manufacturing
facilities
Applications
Distributed power architectures
Wireless networks
Access and optical networking equipment
including Power over Ethernet (PoE)
Enterprise networks
Latest generation IC’s (DSP, FPGA, ASIC) and
Microprocessor powered applications
Options
Negative Remote On/Off logic
Surface Mount (Tape and Reel, -SR Suffix)
Over current/Over temperature/Over voltage
protections (auto-restart)
Shorter lead trim
Description
The KNW (Sixteenth-brick) series power modules are isolated dc-dc converters that operate over a wide input
voltage range of 36 to 75Vdc and provide a single precisely regulated output. The output is fully isolated from the
input, allowing versatile polarity configurations and grounding connections. The modules exhibit high efficiency,
typical efficiency of 91% for 3.3V/20A. These open frame modules are available either in surface-mount (-SR) or in
through-hole (TH) form.
¤ IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Incorporated.
Document No: DS08-009 ver. 1.01
*
UL
is a registered trademark of Underwriters Laboratories, Inc.
PDF name: knw013-020_ds.pdf
†
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 of the required procedures of end-use equipment should be followed.
** ISO is a registered trademark of the International Organization of Standards
Data Sheet
June 29, 2009
KNW013-020 Series Power Modules:
36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
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
Operating Input Voltage
Continuous
Transient (100 ms)
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
I/O Isolation voltage (100% Factory Hi-Pot tested)
All
All
All
All
All
V
IN
V
IN,trans
T
A
T
stg
-0.3
-0.3
-40
-55
80
100
85
125
2250
Vdc
Vdc
°C
°C
Vdc
Device
Symbol
Min
Max
Unit
⎯
⎯
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Operating Input Voltage
Maximum Input Current
(V
IN
= V
IN, min
to V
IN, max
, I
O
=I
O, max
)
Input No Load Current
(V
IN
= V
IN, nom
, I
O
= 0, module enabled)
Input Stand-by Current
(V
IN
= V
IN, nom
, module disabled)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; V
IN, min
to
V
IN, max,
I
O
= I
Omax
; See Test configuration section)
Input Ripple Rejection (120Hz)
EMC, EN55022
Device
All
All
All
All
All
All
Symbol
V
IN
I
IN,max
I
IN,No load
I
IN,stand-by
It
30
2
Min
36
Typ
48
1.7
45
6
Max
75
2.4
Unit
V
dc
A
dc
mA
8
0.1
mA
2
As
mA
p-p
All
60
See EMC Considerations section
dB
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 an
integrated part of sophisticated power architectures. 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 time-delay fuse with a maximum rating of 5 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 sheet for further information.
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2
Data Sheet
June 29, 2009
KNW013-020 Series Power Modules:
36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
(V
IN
=V
IN, min
, 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)
Adjustment Range
Selected by an 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
(V
IN
=V
IN, nom
,I
O
= I
O, max
, T
A
=T
A, min
to T
A, max
)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
Rated Output Current
Output Current Limit Inception (Hiccup Mode )
(V
O
= 90% of V
O, set
)
Output Short-Circuit Current
(V
O
≤250mV)
( Hiccup Mode )
Efficiency
V
IN
= V
IN, nom
; T
A
=25°C; I
O
=I
O, max
; V
O
= V
O,set
Switching Frequency
Dynamic Load Response
(dI
O
/dt=0.1A/μs; V
IN
= V
IN, nom
; T
A
=25°C)
Load Change from I
O
= 50% to 75% or 25% to
50% of I
O,max
;
Peak Deviation
Settling Time (V
O
<10% peak deviation)
(dI
O
/dt=1.0A/μs; V
IN
= V
IN, nom
; T
A
=25°C)
Load Change from I
O
= 50% to 75% or 25% to
50% of I
O,max
;
Peak Deviation
Settling Time (V
O
<10% peak deviation)
All
All
V
pk
t
s
⎯
⎯
4
200
⎯
⎯
% V
O, set
μs
All
5.0V
3.3V
5.0V
3.3V
All
All
5.0V
3.3V
All
C
O, max
C
O, max
I
O, Rated
I
O, Rated
I
O
, lim
I
O, s/c
η
η
f
sw
⎯
0
0
115
⎯
⎯
⎯
120
20
91.0
91.0
400
⎯
⎯
⎯
0
25
75
⎯
30
100
10,000
20,000
13
20
130
⎯
mV
rms
mV
pk-pk
μF
μF
A
dc
A
dc
%I
O, Rated
%I
Omax
Arms
%
%
kHz
All
All
All
⎯
⎯
⎯
⎯
⎯
⎯
0.1
0.1
1.0
% V
O, set
% V
O, set
% V
O, set
All
V
O
-3.0
+3.0
% V
O, set
Device
5.0V
3.3V
Symbol
V
O, set
V
O, set
Min
4.93
3.25
Typ
5.0
3.3
Max
5.07
3.35
Unit
V
dc
V
dc
All
V
O, adj
-20.0
+10.0
% V
O, set
All
All
V
pk
t
s
⎯
⎯
5
200
⎯
⎯
% V
O, set
μs
Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
I/O Isolation Voltage
Device
All
All
All
Symbol
C
iso
R
iso
All
Min
⎯
10
⎯
Typ
1000
⎯
⎯
Max
⎯
⎯
2250
Unit
pF
MΩ
V
dc
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Data Sheet
June 29, 2009
KNW013-020 Series Power Modules:
36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
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
Device
5.0V
5.0V
3.3V
3.3V
Powered Random Vibration (V
IN
=V
IN, min
, I
O
=I
O, max
,
T
A
=25°C, 0 to 5000Hz, 10Grms)
Weight
All
All
⎯
Symbol
MTBF
FIT
MTBF
FIT
Min
Typ
4,114,000
243.1
4,589,027
217.9
90
15.6
(0.55)
⎯
Max
Unit
Hours
10 /Hours
Hours
10 /Hours
Minutes
g
(oz.)
9
9
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
Positive Logic: No device code suffix required
Logic Low = module Off, Logic High = module On
Logic Low - Remote On/Off Current
Logic Low - On/Off Voltage
Logic High Voltage – (Typ = Open Collector)
Logic High maximum allowable leakage current
Turn-On Delay and Rise Times
(I
O
=I
O, max ,
V
IN
=V
IN, nom,
T
A
= 25 C)
Case 1: On/Off input is set to Logic Low (Module
ON) and then input power is applied (delay from
instant at which V
IN
= V
IN, min
until V
O
=10% of V
O,set
)
Case 2: Input power is applied for at least 1 second
and then the On/Off input is set from OFF to ON
(T
delay
= from instant at which V
IN
=V
IN, min
until V
O
=
10% of V
O, set
)
Output voltage Rise time (time for Vo to rise from
10% of V
O,set
to 90% of V
O, set
)
Output voltage overshoot – Startup
I
O
= I
O, max
; V
IN
=V
IN, min
to V
IN, max
, T
A
= 25 C
Remote Sense Range
Output Overvoltage Protection
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysterisis
All
All
All
V
uv/on
V
uv/off
V
hyst
32.5
30.0
2
34.0
31.0
⎯
35.8
33.0
⎯
V
dc
V
dc
V
dc
All
5.0V
3.3V
V
O, limit
V
O, limit
6.1
4.0
⎯
⎯
o
o
Device
Symbol
Min
Typ
Max
Unit
All
All
All
All
I
on/off
V
on/off
V
on/off
I
on/off
⎯
-0.7
⎯
⎯
⎯
⎯
⎯
1.0
1.2
5
10
mA
V
V
μA
All
T
delay
―
13
20
msec
All
5.0
3.3
T
delay
T
rise
T
rise
―
―
―
30
20
6
―
35
25
10
3
+10
7.0
4.6
msec
msec
msec
% V
O, set
% V
O, set
V
dc
V
dc
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Data Sheet
June 29, 2009
KNW013-020 Series Power Modules:
36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current
Characteristic Curves
The following figures provide typical characteristics for the KNW013A0A (5V, 13A) at 25
o
C. The figures are identical
for either positive or negative remote On/Off logic.
95
14
12
OUTPUT CURRENT, Io (A)
90
EFFICIENCY,
η
(%)
10
8
6
4
2
0
20
30
NC
0.5 m/s
100 LFM
1.0 m/s
200 LFM
2.0 m/s
400 LFM
85
80
75
70
0
3
6
Vin=48V
Vin=36V
Vin=75V
9
12
15
40
50
60
70
O
80
90
OUTPUT CURRENT, I
O
(A)
AMBIENT TEMPERATURE, T
A
C
Figure 1. Converter Efficiency versus Output Current.
Figure 4. Derating Output Current versus Local
Ambient Temperature and Airflow.
OUTPUT VOLTAGE On/Off VOLTAGE
V
On/off
(V) (2V/div)
V
O
(V) (2V/div)
OUTPUT VOLTAGE
V
O
(V) (20mV/div)
TIME, t (1μs/div)
TIME, t (10ms/div)
Figure 2. Typical output ripple and noise (V
IN
= V
IN,NOM
,
I
o
= I
o,max
).
OUTPUT CURRENT OUTPUT VOLTAGE
Figure 5. Typical Start-up Using Remote On/Off,
negative logic version shown (V
IN
= V
IN,NOM
, I
o
=
I
o,max
).
INPUT VOLTAGE
OUTPUT VOLTAGE
V
IN
(V) (20V/div)
V
O
(V) (2V/div)
Io (A) (10A/div)
V
O
(V) (200mV/div)
TIME, t (200
μs
/div)
TIME, t (5ms/div)
Figure 3. Transient Response to Dynamic Load
Change, 0.1A/µS, from 75% to 50% to 75% of full load.
Figure 6. Typical Start-up Using Input Voltage (V
IN
=
V
IN,NOM
, I
o
= I
o,max
).
LINEAGE
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