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VWS SERIES - 300 WATT
DESCRIPTION
VWS DC/DC converters are industry standard full
bricks. Featuring a fixed frequency design, the VWS
offers excellent transient response and predictable EMI
performance. The VWS can be combined with VWB
booster modules to provide increased power. VWS
converters use 100% surface-mount construction,
along with planar magnetics, and are fully compatible
with production board washing processes.
FEATURES
• 300W Standard Full Brick
• Industry Standard
Footprint
• Open-Frame Packaging
• 100°C Baseplate
Operation
• Planar Magnetics
• Superior Transient
Response
• 1500V Isolation
• VWB Booster
Modules Available
TECHNICAL SPECIFICATIONS
Input
Voltage Range
24 VDC Nominal
48 VDC Nominal
Input Reflected Ripple Current
Undervoltage Lockout - Turn on / Turn off
Output
Setpoint Accuracy
Line Regulation V
in
min. - V
in
max., I
out
rated
Load Regulation I
out
min. - I
out
max., V
in
nom.
Remote Sense Headroom
Minimum Output Current
Dynamic Regulation, Loadstep
Pk Deviation
Settling Time
Voltage Trim Range
Current Limit Threshold Range, % of I
out
Rated
OVP Trip Range
OVP Type
Short Circuit/Overcurrent Protection
±1%
0.2% V
out
0.2% V
out
0.5 VDC
10 % I
out
Rated
25% I
out
4% V
out
500
µs
±10%
110 - 140%
120 - 140% V
out
Nom.
Self Recovering
Shutdown/Hiccup
18 - 36 VDC
36 - 72 VDC
50 mA Pk-Pk
17-15 VDC /35-32 VDC
Efficiency vs. Load (48V Input)
90
EFFICIENCY %
85
EFF. (36v)
EFF. (48v)
EFF. (75v)
80
75
10 20 30 40 50
General
Turn-On Time
Remote Shutdown
Remote Shutdown Reference
Switching Frequency
Isolation
Input - Output
Input - Case
Output - Case
Temperature Coefficient
Case Temperature
Operating Range
Storage Range
Thermal Shutdown Range
Vibration, 3 Axes, 5 Min Each
MTBF
†
(Bellcore TR-NWT-000332)
Safety
Weight (Approx.)
10 ms
Positive Logic
V
in
Negative
500 kHz
1500 VDC
1050 VDC
500 VDC
0.03 %/°C
†
60 70 80 90 100
LOAD %
Notes
MTBF predictions may vary slightly from model to model.
-40 To +100°C
-40 To +125°C
105 - 115°C
5 g, 10 - 55 Hz
Consult Factory
UL, CUL, TUV
6.0 oz
Specifications typically at 25°C, normal line, and full load, unless otherwise stated.
Soldering Conditions: I/O pins, 260°C, ten seconds; fully compatible with
commercial wave-soldering equipment.
Safety: Agency approvals may vary from model to model. Please consult factory
for specific model information.
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VWS SERIES - 300 WATT
MODELS - (See the last page of this file for options.)
Vin
(Volts)
24
24
24
24
24
48
48
48
48
48
Vin Range
(Volts)
18 - 36
18 - 36
18 - 36
18 - 36
18 - 36
36 - 72
36 - 72
36 - 72
36 - 72
36 - 72
Iin Max.*
(Amps)
21.0
21.0
21.0
21.0
21.0
10.5
10.5
10.5
10.5
10.5
Vout
(Volts)
12
15
24
28
48
12
15
24
28
48
Iout Rated
(Amps)
20.8
16.7
10.4
8.9
5.2
25.0
20.0
12.5
10.7
6.25
Ripple & Noise
Pk-Pk (mV)
120
150
200
200
200
120
150
200
200
200
Efficiency
Typ. **
81%
81%
82%
82%
84%
85%
84%
85%
86%
87%
Model
VWS250YH-A
VWS250YJ-A
VWS250YK-A
†
VWS250Y28-A
†
VWS250YL-A
VWS300ZH-A
VWS300ZJ-A
VWS300ZK-A
VWS300Z28-A
VWS300ZL-A
† Denotes advanced product release. Consult factory for product availability.
* Maximum input current at minimum input voltage, maximum rated output power.
** At nominal Vin, rated output.
MECHANICAL DRAWING
4.60"
(116.8mm)
MOUNTING INSERTS
M3X.5 THROUGH 4PL
0.18"
(4.6mm)
1.700"(43.2mm)
1
5
1.400"(35.6mm)
2
2.40"
(61.0mm)
3
6
1.000"(25.4mm)
DIA 0.080"
(2.0mm)
BOTTOM VIEW
7
0.700"(17.8mm)
8
0.400"(10.2mm)
4
9
DIA 0.040"
0
(1.0mm)
-0.300"(-7.6mm)
-0.50"(-12.7mm)
0.025" REF.
(0.6mm)
0.50"
(12.7mm)
-0.19" 0
(-4.8mm)
4.200"
(106.7mm)
Thermal Impedance
Natural Convection
100 LFM
200 LFM
300 LFM
400 LFM
5.4
3.8
2.5
1.7
1.6
°C/W
°C/W
°C/W
°C/W
°C/W
Pin
1
2
3
4
5
6
7
8
9
Function
-V
in
Gate out
Gate in
+V
in
-V
out
-Sense
Trim
+Sense
+V
out
Tolerances
Inches:
.XX ± 0.020
.XXX ± 0.010
Pin:
± 0.002
(Millimeters)
.X ± 0.5
.XX ± 0.25
± 0.05
Note:
Thermal impedance data is dependent on
many environmental factors. The exact
thermal performance should be validated for
specific application.
( Dimensions as listed unless otherwise
specified.)
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VWS
OPTIONS
When ordering equipment options, use the following suffix information. Select the option(s) that
you prefer and add them to the model number. Example ordering options are located below the
options table.
OPTION
Negative Logic
Lucent Compatible Trim
Terminal Strip
Trim
Enable
Trim and Enable
Current Share
Headerless
SUFFIX
N
T
TS
1
2
3
4
Y
APPLICABLE SERIES
HAS, HBD, HBS, HES, LES, QBS,
QES, TES, TQD
HAS, HBD, HBS, HES, QBS, QES
XWS, XWD, XWT
IAS, LES
IAD, IAS, LES, SMS
IAS, LES
SMS
Encapsulated EWS, IWS, OWS
REMARKS
TTL “Low” Turns Module ON
TTL “High” Turns Module OFF
PIN LENGTH AND HEATSINK
OPTIONS
0.110” (2.8mm) Pin Length
0.150” (3.8mm) Pin Length
0.24” (6.1mm) Horizontal Heatsink
0.24” (6.1mm) Vertical Heatsink
0.45” (11.4mm) Horizontal
Heatsink
0.45” (11.4mm) Vertical Heatsink
0.95” (24.1mm) Horizontal
Heatsink
0.95” (24.1mm) Vertical Heatsink
8
9
1H
1V
2H
2V
3H
3V
All Units (Except SMS)
All Units (Except SMS)
All Units (Except DIP, SIP, and SM
Packages)
All Units (Except DIP, SIP, and SM
Packages)
All Units (Except DIP, SIP, and SM
Packages)
All Units (Except DIP, SIP, and SM
Packages)
All Units (Except DIP, SIP, and SM
Packages)
All Units (Except DIP, SIP, and SM
Packages)
Standard Pin Length is 0.180”
(4.6mm)
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Example Options:HBS050ZG-ANT3V = HBS050ZG-A with negative logic, Lucent compatible trim, and
0.95” vertical heatsink.
LES015YJ-3N = LES015YJ with optional trim and enable, negative logic.
QBS066ZG-AT8 = QBS066ZG-A with Lucent compatible trim and 0.110” pin length.
NUCLEAR AND MEDICAL APPLICATIONS
Power-One products are not authorized for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems without the express written consent of the President of Power-One, Inc.
TECHNICAL REVISIONS
The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
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