TWM250 Series
250W Medical GradeAC/DC Power Supplies
FEATURES
• 90~264 VAC Universal Input
• 0.9 to 0.95 Power Factor
• 200W @ Convection or 250W @ 17.1 CFM
• 3" X 5" Footprint
• IEC/EN/UL 60601-1 3rd Edition Approvals
ELECTRICALSPECIFICATIONS
GENERALSPECIFICATIONS
Input Voltage ........................ 90~264 VAC
Input Frequency ................... 47~63 Hz
Efficiency ..................................>85% at full load, 115 VAC
Switching Frequency ...............53-58 KHz
Input Current ........................ 4A (rms) max. @ 115 VAC,
2A (rms) max. @ 230 VAC
Hold-up Time...........................>10 ms @ 115 VAC, 250W load
Operating Temperature ...........0°C to +70°C
Inrush Current ..................... 50Amax. @ 115 VAC, 100Amax.
@ 230 VAC at cold start +25°C
Earth Leakage Current ........ 300 µA max. @ 264 VAC, 63 Hz
Power Factor ....................... >0.95 @115 VAC, >0.9 @230 VAC
Output Power Ratings ......... See table
Storage Temperature...............-40°C to +85°C
Derating ...................................Derate linearly 2.5%/°C
.............................................from +41°C to +70°C
Operating Humidity..................5% to 95% non-condensing
Short-Circuit Protection ...........Auto-recovery
Output Voltage Regulation .. See table
Ripple and Noise ................ See table
Overload Protection .................Set at 105% to 160% of the
maximum rating, Auto-recovery
Overvoltage Protection ............Auto-recovery
Withstand Voltage ....................4,000 VAC from input to output,
.............................................1,500 VAC from input to ground,
.............................................500 VAC from output to ground
MTBF ........................................>120K hours at full load and
25°C ambient temperature
STANDARDS & COMPLIANCES
EMC Standards ................... EN 60601-1-2, EN 55011 Class B,
FCC Part 18 Class B
Safety Standards ................. IEC/EN/UL 60601-1 3rd Edition,
............................................. ANSI/AAMI ES 60601-1: 2005,
............................................. CAN/CSA C22.2 No. 60601-1:08
AgencyApprovals ................ CSA, CUS, TUV, CE, CB, FCC
Other Compliance ............... RoHS
calculated per MIL-HDBK-217F
MODELS LIST
Max. Load
Output
Voltage
Min.
Load
Output
Regulation
Ripple & Noise
(Vp-p) (2)
Max.
Output Power
Product No.(1)
TWM250-12
TWM250-19
TWM250-24
TWM250-28
TWM250-30
TWM250-36
TWM250-40
TWM250-48
@ Convection
16.67A
10.53A
8.34A
@ 17.1 CFM
20.84A
13.16A
10.42A
8.93A
+12V
+19V
+24V
+28V
+30V
+36V
+40V
+48V
0A
0A
0A
0A
0A
0A
0A
0A
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
120mV
190mV
240mV
280mV
300mV
360mV
400mV
480mV
250W
250W
250W
250W
250W
250W
250W
250W
7.14A
6.67A
8.34A
5.56A
6.95A
5A
6.25A
4.17A
5.21A
Notes:
1. Standard form factor is PCB. For U-bracket models, add suffix "B" to the P/N, e.g. TWM250-24B, TWM250-48B, etc.
2. R&N are measured at 20 MHz bandwidth with a 47µF electrolytic capacitor and a 0.1µF ceramic capacitor in parallel.
Tumbler Technologies + TRUMPower
3350 Scott Blvd., Building 13 • Santa Clara, California 95054, USA • 408-988-6616 • sales@trumpower.com • www.TRUMPower.com
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