TRN 3SM Series, 3 Watt
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All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
Input Specifications
Input current no load 9 Vin models: 75 mA max.
12 Vin models: 40 mA max.
24 Vin models: 20 mA max.
48 Vin models: 12 mA max.
Surge voltage (1 s max.) 9 Vin models: 15 V max.
12 Vin models: 25 V max.
24 Vin models: 50 V max.
48 Vin models: 100 V max.
Reflected ripple current 9 Vin models: 100 mAp-p typ.
12 & 24 Vin models: 75 mAp-p typ.
48 Vin models: 50 mAp-p typ.
Conducted noise – Conducted input emission EN 55032 class A or B with external components
– Filter proposal for compling to EN 55032 class A/B www.tracopower.com/overview/trn3sm
EMC immunity – ESD (electrostatic discharge) EN 61000-4-2, air ±8 kV, contact ±6 kV,
perf. criteria A
– Radiated immunity EN 61000-4-3, 10 V/m, perf. criteria A
– Fast transient / surge EN 61000-4-4, ±2 kV, perf. criteria A
(with external input capacitor) EN 61000-4-5, ±1 kV perf. criteria A
Nippon chemi-con KY 220 µF/ 100 V
– Conducted immunity EN 61000-4-6, 10 Vrms, perf. criteria A
– Magnetic field immunity EN 61000-4-8
100 A/m, continuous, perf. criteria A
1000 A/m, 1 sec., perf. criteria A
Input filter capacitor type
Output Specifications
Voltage set accuracy ±1 % max.
Regulation – Input variation 0.2 % max.
– Load variation 0 – 100 % 1 % max.
– Cross regulation - dual output: 5 % max. (asymmetrical load 25 % / 100 %)
Temperature coefficient ±0.02 %/K typ.
Ripple and noise (20 MHz Bandwidth) 50 mVp-p typ.
Start-up time 15 ms max. (5 ms typ.)
Transient response (25% load step change) 500 μs typ.
Short circuit protection continuous, automatic recovery
Capacitive load – Single output 3.3 VDC models: 4400 µF max.
5.0 VDC models: 2200 µF max.
12 VDC models: 1000 µF max.
15 VDC models: 820 µF max.
24 VDC models: 330 µF max.
– Dual output ±5.0 VDC models: 1200 µF max. (each output)
±12 VDC models: 520 µF max. (each output)
+15 VDC models: 440 µF max. (each output)
General Specifications
Temperature ranges – Operating (convection cooling 20 LFM, 0.1 m/s) –40°C to +85°C
– Case temperature +95°C max.
– Storage temperature –55°C to +125°C
Derating 2.5%/K above 65°C
Humidity (non condensing) 5 – 95 % rel H max.
Isolation voltage – I/O isolation voltage (60 s) 1’600 VDC
Isolation capacitance 75 pF max.
Isolation resistance (@ 500 VDC) >1 GOhm