TWM280 Series
280W Medical & ITE GradeAC/DC Power Supplies
FEATURES
• 3" x 5" Industrial Standard Footprint
• 1.18" Low Profile Open Frame
• 0.9 to 0.95 Power Factor
• Medical & ITE Dual Approvals
• 5000m (ITE), 3000m (Medical) Operation Altitude
• Remote On/Off Control
ELECTRICALSPECIFICATIONS
GENERALSPECIFICATIONS
Input Voltage ........................ 90~264 VAC
Input Frequency ................... 47~63 Hz
Efficiency ..................................>91% typ. @ full load, 115 VAC
Switching Frequency ...............80 KHz
Input Current ........................ 3.5A (rms) max. @ 115 VAC,
2A (rms) max. @ 230 VAC
Inrush Current ..................... 30Amax. @ 115 VAC, 60Amax.
@ 230 VAC at cold start +25°C
Hold-up Time...........................>10 ms typ. @ full load, 115 VAC
Operating Temperature ...........0°C to +70°C
Derating ...................................Derate from 100% at +51°C
linearly to 50% at +70°C
Earth Leakage Current ........ 100 µA max. @ 264 VAC
Power Factor........................ >0.95 @115 VAC, >0.9 @230 VAC
Output Power Ratings .......... See table
Output Voltage Regulation .. ±3%
Ripple and Noise ................ See table
Storage Temperature...............-20°C to +85°C
Temperature Coefficient ..........±1%/°C max.
Operating Humidity..................0% to 90% non-condensing
Short-Circuit Protection............Auto-recovery
Overload Protection .................Set at 105% to 150% of the
maximum rating, Auto-recovery
Overvoltage Protection ............Latching type, AC recycle
Withstand Voltage ....................5,656 VDC from input to output,
2,121 VDC from input to ground,
Remote Inhibit ..................... Requires an external TTL high
level signal to inhibit the output
STANDARDS & COMPLIANCES
2,121 VDC from output to ground
MTBF ........................................>300K hours @ full load and
25°C ambient temperature
EMC Standards ................... EN 60601-1-2, EN 55024;
EN 55011/55022 & FCC Class B
Safety Standards ................. UL/IEC/EN 60601-1 3rd Edition,
............................................. UL/cUL/IEC/TUV EN 60950-1
AgencyApprovals ................ UL, CUS, TUV, CE, CB, FCC
Other Compliances............. RoHS, ErP
calculated per Telcordia
(Bellcore)
MODELS LIST
Max. Output
Power @
Convection
Max.
Output Power
@ 18 CFM
Max. Load
Output
Voltage
Output
Regulation
Ripple & Noise
(Vp-p) (2)
Standby
Supply
Product No.(1)
TWM280-12
TWM280-24
TWM280-28
TWM280-48
TWM500-54
@ Convection
17.5A
@ 18 CFM
23.33A
11.66A
10A
Fan Output
12V/0.3A
12V/0.3A
12V/0.3A
12V/0.3A
12V/0.3A
+12V
+24V
+28V
+48V
+54V
±3%
±3%
±2%
±2%
±2%
150mV
240mV
280mV
300mV
400mV
5V/0.5A
5V/0.5A
5V/0.5A
5V/0.5A
5V/0.5A
210W
210W
210W
210W
210W
280W
280W
280W
280W
280W
8.75A
7.5A
4.375A
3.88A
5.83A
5.18A
Notes:
1. Output Connector Suffix "T" = Terminal block, suitable for all models; Suffix "M" = Mini-fit connector, suitable for 24V and up; Suffix "J" = JST connector, suitable for 24V
and up.
2. R&N are measured at 20 MHz bandwidth with a 47µF electrolytic capacitor and a 0.1µF ceramic capacitor in parallel.
3. All models are equipped with 5Vsb & 12V fan outputs.
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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