DC/DC Railway Converter THN 20WIR Series, 20 Watt Compact 1 x 1 metal package EN 50155 and EN 61373 approval for railway applications Qualification for fire behavior according to EN 45545-2 Wide 4:1 input voltage: 9-36, 18-75, 36-160 VDC UL 62368-1 IEC 62368-1 Operating temperature range -40 to The THN 20WIR series is a family of ruggedized 20 Watt DC/DC converters for +65 C without derating highest reliability in harsh environments. The converters have a wide 4:1 input range and increased resistance against electromagnetic interference, shock/vi- High efficiency up to 91% bration and thermal shock and come in a six-side shielded 1 x 1 metal pack- age. The innovative design provides high efficiencies up to 91% and thus en- 3000 VDC I/O-isolation able an operating temperature range from -40 to +65C without derating. The Protection against overload, overvoltage approvals according to standards EN 50155 and EN 61373 qualify them for and short circuit railway and transportation systems. Additional qualification for the fire behavior of components according to EN 45545-2 and the safety approval according Remote On/Off and Trim function IEC/EN 62368-1, UL62368-1 support a potential compliance test of the appli- 3-year product warranty cation. Built-in features like an internal EN 55032 class A filter, input under- voltage-lockout, short circuit protection, remote On/Off and output voltage trim make this series suitable for almost any application demands and thus facilitate the design-in process. Models Order Code Input Voltage Output 1 Output 2 Efficiency Range Vnom Imax Vnom Imax typ. THN 20-2410WIR 3.3 VDC 5 500 mA 88 % THN 20-2411WIR 5.1 VDC 4 000 mA 89 % THN 20-2412WIR 12 VDC 1 670 mA 89 % THN 20-2413WIR 9 - 36 VDC 15 VDC 1 330 mA 89 % (24 VDC nom.) THN 20-2415WIR 24 VDC 833 mA 91 % THN 20-2422WIR +12 VDC 833 mA 12 VDC 833 mA 89 % THN 20-2423WIR +15 VDC 667 mA 15 VDC 667 mA 90 % THN 20-2425WIR +24 VDC 417 mA 24 VDC 417 mA 91 % THN 20-4810WIR 3.3 VDC 5 500 mA 89 % THN 20-4811WIR 5.1 VDC 4 000 mA 90 % THN 20-4812WIR 12 VDC 1 670 mA 89 % THN 20-4813WIR 18 - 75 VDC 15 VDC 1 330 mA 90 % (48 VDC nom.) THN 20-4815WIR 24 VDC 833 mA 91 % THN 20-4822WIR +12 VDC 833 mA 12 VDC 833 mA 89 % THN 20-4823WIR +15 VDC 667 mA 15 VDC 667 mA 90 % THN 20-4825WIR +24 VDC 417 mA 24 VDC 417 mA 91 % THN 20-7210WIR 3.3 VDC 5 500 mA 88 % THN 20-7211WIR 5.1 VDC 4 000 mA 90 % THN 20-7212WIR 12 VDC 1 670 mA 90 % THN 20-7213WIR 36 - 160 VDC 15 VDC 1 330 mA 90 % (110 VDC nom.) THN 20-7215WIR 24 VDC 833 mA 91 % THN 20-7222WIR +12 VDC 833 mA 12 VDC 833 mA 90 % THN 20-7223WIR +15 VDC 667 mA 15 VDC 667 mA 90 % THN 20-7225WIR +24 VDC 417 mA 24 VDC 417 mA 91 % Page 1 / 5 www.tracopower.com December 16, 2021THN 20WIR Series, 20 Watt Options THN-HS2 - Optional Heat Sink: www.tracopower.com/products/thn-hs2.pdf on demand - Optional Heat Sink: www.tracopower.com/products/thn-hs3.pdf (backorder with MOQ - Optional Heat Sink: www.tracopower.com/products/thn-hs4.pdf non stocking item) Input Specifications Input Current - At no load 24 Vin models: 9 mA typ. 48 Vin models: 7 mA typ. 110 Vin models: 6 mA typ. Surge Voltage 24 Vin models: 50 VDC max. (1 s max.) 48 Vin models: 100 VDC max. (1 s max.) 110 Vin models: 185 VDC max. (1 s max.) Under Voltage Lockout 24 Vin models: 7.5 VDC min. / 8 VDC typ. / 8.8 VDC max. 48 Vin models: 15.5 VDC min. / 16 VDC typ. / 17.5 VDC max. 110 Vin models: 32 VDC min. / 34 VDC typ. / 35.5 VDC max. Recommended Input Fuse 24 Vin models: 4 000 mA (slow blow) 48 Vin models: 2 000 mA (slow blow) 110 Vin models: 1 000 mA (slow blow) (The need of an external fuse has to be assessed in the final application.) Input Filter Internal Pi-Type Output Specifications Output Voltage Adjustment 10% to +20% (24 Vout models) 10% (other single models) (By external trim resistor) www.tracopower.com/overview/thn20wir See application note: Output power must not exceed rated power Voltage Set Accuracy 1% max. Regulation - Input Variation (Vmin - Vmax) single output models: 0.2% max. dual output models: 0.5% max. - Load Variation (10 - 90%) single output models: 0.1% max. dual output models: 0.8% max. (Output 1) 0.8% max. (Output 2) - Cross Regulation dual output models: 5% max. (25% / 100% asym. load) Ripple and Noise - single output 3.3 Vout models: 75 mVp-p typ. (w/ 22 F, 25 V X7R) (20 MHz Bandwidth) 5.1 Vout models: 75 mVp-p typ. (w/ 22 F, 25 V X7R) 12 Vout models: 100 mVp-p typ. (w/ 22 F, 25 V X7R) 15 Vout models: 100 mVp-p typ. (w/ 22 F, 25 V X7R) 24 Vout models: 125 mVp-p typ. (w/ 4.7 F, 50 V X7R) - dual output 12 / -12 Vout models: 100 / 100 mVp-p typ. (w/ 10 F, 25 V X7R) 15 / -15 Vout models: 100 / 100 mVp-p typ. (w/ 10 F, 25 V X7R) 24 / -24 Vout models: 125 / 125 mVp-p typ. (w/ 4.7 F, 50 V X7R) Capacitive Load - single output 3.3 Vout models: 8 000 F max. 5.1 Vout models: 5 000 F max. 12 Vout models: 850 F max. 15 Vout models: 700 F max. 24 Vout models: 220 F max. - dual output 12 / -12 Vout models: 500 / 500 F max. 15 / -15 Vout models: 350 / 350 F max. 24 / -24 Vout models: 100 / 100 F max. Minimum Load Not required Temperature Coefficient 0.02 %/K max. Start-up Time 30 ms typ. / 40 ms max. All specifications valid at nominal voltage, resistive full load and +25C after warm-up time, unless otherwise stated. Page 2 / 5 www.tracopower.com December 16, 2021