DC-DC
7.5 Watts
WR Series
•
•
•
•
•
•
•
2:1 Input Range
DIP-24 Metal Package
xppower.com
-25 °C to +100 °C Operating Temperature
1500 VDC Isolation
Efficiency to 83%
Input Pi Filter
Continuous Short Circuit Protection
Specification
Input
Input Voltage Range
• 12 V (9-18 VDC)
24 V (18-36 VDC)
48 V (36-72 VDC)
Input Current (no load)
• See table
Input Filter
• Pi network
Undervoltage Lockout
• Turn On >70% nominal input
Turn Off <65% nominal input
General
Efficiency
Isolation Voltage
Switching Frequency
MTBF
•
•
•
•
See table
1500 VDC min Input to Output (1000 MΩ)
300 kHz typical
900 kHrs to MIL-HDBK-217F
Environmental
Operating Temperature
• -25 ˚C to +100 ˚C (see derating curve)
Case Temperature
• +100 ˚C max
Storage Temperature
• -40 ˚C to +100 ˚C
Output
Output Voltage
Start Up Delay
Initial Set Accuracy
Line Regulation
Load Regulation
•
•
•
•
•
See table
900 ms max
±2.0% max
±0.2% max
±0.5% max single output models,
±1.0% max dual output models,
for 75% load change
±1.5% on dual output models
<1% max deviation, recovery to within
1% in 200 µs for a 50% load change
100 mV max pk-pk, 20 MHz BW
110-130% constant current
EMC
Emissions
ESD Immunity
Radiated Immunity
Conducted Immunity
• 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
Cross Regulation
Transient Response
Ripple & Noise
Overload
Characteristics
Short Circuit Protection
Temperature
Coefficient
•
•
•
•
• Continuous with auto recovery
• 0.05%/˚C max
DC-DC
Models and Ratings
Input
Voltage
(1)
Output
Voltage
3.3 VDC
5.0 VDC
12.0 VDC
9-18 VDC
15.0 VDC
±5.0 VDC
±12.0 VDC
±15.0 VDC
3.3 VDC
5.0 VDC
12.0 VDC
18-36 VDC
15.0 VDC
±5.0 VDC
±12.0 VDC
±15.0 VDC
3.3 VDC
5.0 VDC
12.0 VDC
36-72 VDC
15.0 VDC
±5.0 VDC
±12.0 VDC
±15.0 VDC
Notes
1. Nominal input voltage is 12 VDC for WR2xx models, 24 VDC for WR3xx models and 48 VDC for WR4xx models.
2. Input current is at nominal input voltage.
WR Series
Output
Current
1500 mA
1500 mA
625 mA
500 mA
±750 mA
±310 mA
±250 mA
1500 mA
1500 mA
625 mA
500 mA
±750 mA
±310 mA
±250 mA
1500 mA
1500 mA
625 mA
500 mA
±750 mA
±310 mA
±250 mA
Input Current
(2)
No Load
25 mA
25 mA
25 mA
25 mA
30 mA
30 mA
30 mA
20 mA
20 mA
20 mA
20 mA
25 mA
25 mA
25 mA
10 mA
10 mA
10 mA
10 mA
15 mA
15 mA
15 mA
Full Load
557 mA
801 mA
762 mA
762 mA
791 mA
753 mA
753 mA
271 mA
396 mA
381 mA
381 mA
386 mA
377 mA
377 mA
136 mA
195 mA
190 mA
190 mA
193 mA
188 mA
188 mA
Efficiency
74%
78%
82%
82%
79%
83%
83%
76%
79%
82%
82%
81%
83%
83%
76%
80%
82%
82%
81%
83%
83%
Model
Number
WR200
WR201
WR202
WR203
WR204
WR205
WR206
WR300
WR301
WR302
WR303
WR304
WR305
WR306
WR400
WR401
WR402
WR403
WR404
WR405
WR406
Mechanical Details
All dimensions are in inches (mm)
Weight:
0.08 lbs (35 g) approx.
PIN CONNECTIONS
0.02
(0.5)
0.18
(4.5)
Pin
Single Output
-V input
-V input
N/C
N/C
N/C
+V output
N/C
-V output
+V input
+V input
Dual Output
-V input
-V input
Common
N/C
-V output
+V output
N/C
Common
+V input
+V input
23
22
2
3
2
3
9
10
0.10 1.25
(2.5) (31.8)
16
15
14
9
10
11
11
14
15
16
0.4
(10.2)
0.15
(3.8)
0.60 (15.2)
22
23
0.80 (20.3)
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
17-Apr-07
嵌入式系统
