DC-DC
5 Watts
WT Series
•
•
•
•
•
•
•
2:1 Input Range
Optional 4:1 Input Range
Isolated Outputs
Efficiency to 82%
Fully Regulated Outputs
Optional 3 kVDC Isolation
UL Approved Versions
xppower.com
Specification
Input
Input Voltage Range
• 12 V (9-18 or 9-36 VDC - A version)
24 V (18-36 or 18-72 VDC - A version)
48 V (36-72 VDC)
Input Current (no load)
• See table
Input Filter
• Pi network
Undervoltage Lockout
• Turn On > 65% nominal input
Turn Off < 63% nominal input
General
Efficiency
Isolation
• See table
• 500 VDC Input to Output (1000 MΩ/80 pF)
Optional high isolation version,
3000 VDC Input to Output, add suffix ‘X’
• 100 kHz typical
• 1,000 kHrs to MIL-HDBK-217F
Switching Frequency
MTBF
Environmental
Output
Output Voltage
Output Voltage Balance
Initial Set Accuracy
Start Up Rise Time
Line Regulation
Load Regulation
•
•
•
•
•
•
see tables
±1% max, dual output models
±2% max
3 ms max
±0.5% max from high line to low line
±0.5% max for 10-100% load change for
single output models,
±1.0% max for 25-100% load change for
dual output models
±2.2% on dual output models
<1.0% max deviation, recovering within
200 µs for a 50% load change
100 or 1.0% pk-pk, whichever is greater,
20MHz BW
Continuous with auto recovery
±0.05 /°C max
Operating Temperature
• -25 ºC to +70 ºC (see derating curve)
Case Temperature
• +95 ºC max
Storage Temperature
• -40 ºC to +100 ºC
EMC & Safety
Emissions
ESD Immunity
Radiated Immunity
Conducted Immunity
Safety
• EN55022, level A conducted
EN55022, level A radiated
• EN61000-4-2, level 2
Perf Criteria A
• EN61000-4-3 3 V/m
Perf Criteria A
• EN61000-4-6 3 V rms
Perf Criteria A
• UL1950 (for XU versions only)
Cross Regulation
Transient Response
Ripple & Noise
•
•
•
Short Circuit Protection
•
Temperature
•
Coefficient
DC-DC
Models and Ratings
Input
Voltage
(1,2,4)
Output
Voltage
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
Output
Current
1000
1000
470
400
±500
±230
±190
1000
1000
470
400
±500
±230
±190
1000
1000
470
400
±500
±230
±190
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Input Current
No Load
7.5
7.5
7.5
7.5
12.0
12.0
12.0
5.0
5.0
5.0
5.0
7.5
7.5
7.5
2.0
2.0
2.0
2.0
3.0
3.0
3.0
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
(6)
WT Series
Full Load
393
545
585
625
545
575
590
197
265
285
305
265
285
295
98
133
145
154
133
142
147
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Efficiency
70%
76%
80%
80%
76%
80%
80%
70%
78%
82%
82%
78%
81%
81%
70%
78%
81%
81%
78%
81%
81%
Model
Number
(3)
WT200
WT201
WT202
WT203
WT204
WT205
WT206
WT300
WT301
WT302
WT303
WT304
WT305
WT306
WT400
WT401
WT402
WT403
WT404
WT405
WT406
9-18 VDC
18-36 VDC
36-72 VDC
Notes
1. Nominal input voltage 12, 24 or 48 VDC.
2. For optional 4:1 input range: 9-36 VDC: Add suffix ‘A’ to WT2xx model number,
20-72 VDC: Add suffix ‘A’ to WT3xx model number.
3. For 3000 VDC isolation add suffix ‘X’ to model number.
4. For UL1950 approval, add suffix ‘XU’ to model number. UL approved product
is only available with 3000 VDC isolation and option ‘X’ pinout.
5. ‘X’ or ‘XU’ versions are not available with optional 4:1 input range.
6. Input current is at nominal input voltage.
Mechanical Details
All dimensions are in inches (mm)
Weight:
0.06 lbs (25 g) approx.
PIN CONNECTIONS
Single Output Dual Output
+V input
+V input
N/C
-V output
N/C
Common
No pin
No pin
-V output
Common
+V output
+V output
-V input
-V input
-V input
-V input
+V output
+V output
-V output
Common
No pin
No pin
N/C
Common
N/C
-V output
+V input
+V input
OPTION ‘X’ / ‘XU’ PIN CONNECTIONS
Pin Single Output Dual Output
1
No pin
No pin
2
-V input
-V input
3
-V input
-V input
9
N/C
Common
10
N/C
N/C
11
N/C
-V output
12
No pin
No pin
13
No pin
No pin
14
+V output
+V output
15
N/C
N/C
16
-V output
Common
22
+V input
+V input
23
+V input
+V input
24
No pin
No pin
0.08 (2.0)
0.02
(0.5)
1.25
(31.8)
24
23
22
BOTTOM
VIEW
16
15
14
13
9
10
11
12
1
2
3
0.10
(2.5)
0.5
(12.7)
Max
0.15
(3.8)
0.60 (15.2)
0.80 (20.3)
Pin
1
2
3
9
10
11
12
13
14
15
16
22
23
24
Derating Curve
100
80
Load (%)
60
40
20
0
-20 -10
0
10
20 30 40 50 60
Ambient Temperature (ºC)
70
80
90
100
11-Nov-05
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