Application Note THL 25 Series Features ◆ Highest power density 25W converter! Ultra compact design: 1.0” x 1.0” x 0.4” ◆ Shielded metal case with isolated baseplate ◆ Wide 2:1 input voltage ranges ◆ Very high efficiency up to 90% ◆ Output voltage adjustable ◆ Remote On/Off control ◆ Operating temp. range –40°C to +80°C and up to +85°C with heat-sink ◆ I/O isolation voltage 1500 VDC ◆ 3-year product warranty Models Output current max. Efficiency typ. THL 25-1210 Order code 3.3 VDC 6000 mA 87 % THL 25-1211 5.0 VDC 5000 mA 89 % 12 VDC 2085 mA 89 % 15 VDC 1670 mA 89 % ±12 VDC ±1042 mA 89 % THL 25-1223 ±15 VDC ±835 mA 89 % THL 25-2410 3.3 VDC 6000 mA 88 % THL 25-2411 5.0 VDC 5000 mA 90 % THL 25-2412 12 VDC 2085 mA 90 % 15 VDC 1670 mA 90 % THL 25-1212 THL 25-1213 THL 25-1222 THL 25-2413 THL 25-2422 Input voltage range 9 – 18 VDC (12 VDC nominal) 18 – 36 VDC (24 VDC nominal) Output voltage ±12 VDC ±1042 mA 89 % THL 25-2423 ±15 VDC ±835 mA 89 % THL 25-4810 3.3 VDC 6000 mA 88 % THL 25-4811 5.0 VDC 5000 mA 90 % THL 25-4812 12 VDC 2085 mA 90 % 15 VDC 1670 mA 90 % ±12 VDC ±1042 mA 89 % ±15 VDC ±835 mA 89 % THL 25-4813 THL 25-4822 THL 25-4823 http://www.tracopower.com 36 – 75 VDC (48 VDC nominal) Page 1 of 5 Application Note THL 25 Series Temperature Derating Derating without heatsink Derating with heatsink 100 80 80 Output Power (%) Output Power (%) THL 25-2410 and THL 25-4810 100 60 40 20 Natural Convection 20LFM 100LFM 60 200LFM 400LFM 40 20 0 0 -40 02 06 40 0 Ambient Temperature 80 100 110 ~ -40 02 40 0 Ambient Temperature THL 25-24.. and THL 25-48.. other single output models 100 80 80 60 40 80 100 110 80 100 110 80 100 110 80 100 110 C Derating Curve with Heatsink 100 Output Power (%) Output Power (%) 06 C Natural Convection 20LFM 100LFM 60 200LFM 400LFM 40 20 20 0 0 -40 02 06 40 0 Ambient Temperature 80 ~ -40 100 110 02 06 C 40 0 Ambient Temperature C 100 80 80 Output Power (%) Output Power (%) THL 25-1210 100 60 40 20 Natural Convection 20LFM 100LFM 60 200LFM 400LFM 40 20 0 0 -40 02 06 40 0 Ambient Temperature 80 100 110 ~ -40 02 06 C 40 0 Ambient Temperature C 100 80 80 Output Power (%) Output Power (%) Dual output models and other THL 25-12.. models 100 60 40 20 Natural Convection 20LFM 100LFM 60 200LFM 400LFM 40 20 0 0 -40 02 06 40 0 Ambient Temperature http://www.tracopower.com 80 C 100 110 ~ -40 02 06 40 0 Ambient Temperature C Page 2 of 5 Application Note THL 25 Series Efficiency THL 25-1211 100 90 90 80 80 Efficiency(%) Efficiency(%) THL 25-1210 100 70 60 70 60 9V 50 9V 50 12V 18V 40 10 20 30 40 50 60 70 80 90 12V 18V 40 100 10 20 30 40 % of Full Load 60 70 80 90 100 % of Full Load THL 25-1212 THL 25-1215 100 100 90 90 80 80 Efficiency(%) Efficiency(%) 50 70 60 70 60 9V 50 9V 50 12V 18V 40 10 20 30 40 50 60 70 80 90 12V 18V 40 100 10 20 30 40 % of Full Load 60 70 80 90 100 % of Full Load THL 25-1222 THL 25-1223 100 100 90 90 80 80 Efficiency(%) Efficiency(%) 50 70 60 70 60 9V 50 9V 50 12V 18V 40 10 20 30 40 50 60 70 80 90 12V 18V 40 100 10 20 30 40 % of Full Load 60 70 80 90 100 % of Full Load THL 25-2410 THL 25-2411 100 100 90 90 80 80 Efficiency(%) Efficiency(%) 50 70 60 70 60 18V 50 18V 50 24V 36V 40 10 20 30 40 50 60 70 80 90 24V 36V 40 100 10 20 30 40 % of Full Load 60 70 80 90 100 % of Full Load THL 25-2412 THL 25-2413 100 100 90 90 80 80 Efficiency(%) Efficiency(%) 50 70 60 70 60 18V 50 24V 36V 40 10 20 30 40 50 60 % of Full Load http://www.tracopower.com 70 80 90 100 18V 50 24V 36V 40 10 20 30 40 50 60 70 80 90 100 % of Full Load Page 3 of 5 Application Note THL 25 Series Efficiency THL 25-2423 100 90 90 80 80 Effi ciency(%) Effi ciency(%) THL 25-2422 100 70 60 70 60 18V 50 18V 50 24V 36V 40 10 20 30 40 50 60 70 80 90 24V 36V 40 100 10 20 30 40 % of Full Load 60 70 80 90 100 % of Full Load THL 25-4810 THL 25-4811 100 100 90 90 80 80 Effi ciency(%) Effi ciency(%) 50 70 60 70 60 36V 50 36V 50 48V 75V 40 10 20 30 40 50 60 70 80 90 48V 75V 40 100 10 20 30 40 % of Full Load 60 70 80 90 100 % of Full Load THL 25-4812 THL 25-4813 100 100 90 90 80 80 Effi ciency(%) Effi ciency(%) 50 70 60 70 60 36V 50 36V 50 48V 75V 40 10 20 30 40 50 60 70 80 90 48V 75V 40 100 10 20 30 40 % of Full Load 60 70 80 90 100 % of Full Load THL 25-4822 THL 25-4823 100 100 90 90 80 80 Effi ciency(%) Effi ciency(%) 50 70 60 70 60 36V 50 48V 75V 40 10 20 30 40 50 60 % of Full Load http://www.tracopower.com 70 80 90 100 36V 50 48V 75V 40 10 20 30 40 50 60 70 80 90 100 % of Full Load Page 4 of 5 Application Note THL 25 Series External Output Trimming Rdown Rup Trim resistor values: 3 3.3 VDC nominal output Trim down 1 Vout= Vox0.99 Rd= 63.59 4 3 5 4 5 2 Vox0.98 30.28 3 Vox0.97 18.19 4 Vox0.96 11.95 5 Vox0.95 8.13 6 Vox0.94 5.56 7 Vox0.93 3.70 8 Vox0.92 2.31 9 Vox0.91 1.21 10 Vox0.90 0.34 % Volts KOhms 2 Vox1.02 29.28 3 Vox1.03 16.87 4 Vox1.04 10.90 5 Vox1.05 7.38 6 Vox1.06 5.06 7 Vox1.07 3.42 8 Vox1.08 2.20 9 Vox1.09 1.25 10 Vox1.10 0.49 % Volts KOhms 2 Vox0.98 20.61 3 Vox0.97 12.31 4 Vox0.96 8.15 5 Vox0.95 5.66 6 Vox0.94 4.00 7 Vox0.93 2.81 8 Vox0.92 1.92 9 Vox0.91 1.23 10 Vox0.90 0.68 % Volts KOhms Trim up 1 Vout= Vox1.01 Ru= 36.57 12 VDC nominal output Trim down 1 Vout= Vox0.99 Rd= 394.50 2 Vox1.02 16.58 3 Vox1.03 9.92 4 Vox1.04 6.59 5 Vox1.05 4.59 6 Vox1.06 3.25 7 Vox1.07 2.30 8 Vox1.08 1.59 9 Vox1.09 1.03 10 Vox1.10 0.59 % Volts KOhms 2 Vox0.98 179.74 3 Vox0.97 106.08 4 Vox0.96 68.86 5 Vox0.95 46.39 6 Vox0.94 31.36 7 Vox0.93 20.60 8 Vox0.92 12.51 9 Vox0.91 6.21 10 Vox0.90 1.17 % Volts KOhms Trim up 1 Vout= Vox1.01 Ru= 368.92 15 VDC nominal output Trim down 1 Vout= Vox0.99 Rd= 572.67 2 Vox1.02 161.92 3 Vox1.03 94.97 4 Vox1.04 61.86 5 Vox1.05 42.12 6 Vox1.06 29.00 7 Vox1.07 19.66 8 Vox1.08 12.66 9 Vox1.09 7.23 10 Vox1.10 2.89 % Volts KOhms 2 Vox0.98 248.63 3 Vox0.97 145.60 4 Vox0.96 94.97 5 Vox0.95 64.87 6 Vox0.94 44.92 7 Vox0.93 30.72 8 Vox0.92 20.10 9 Vox0.91 11.86 10 Vox0.90 5.28 % Volts KOhms 2 Vox1.02 182.12 3 Vox1.03 108.73 4 Vox1.04 71.43 5 Vox1.05 48.85 6 Vox1.06 33.71 7 Vox1.07 22.86 8 Vox1.08 14.69 9 Vox1.09 8.33 10 Vox1.10 3.23 % Volts KOhms Trim up 1 Vout= Vox1.01 Ru= 70.50 5.0 VDC nominal output Trim down 1 Vout= Vox0.99 Rd= 45.53 Trim up Vout= Ru= 1 Vox1.01 392.98 Output Voltage Adjustment (for single output models only) Class Model C THL 25-12xx Class A Class B 1 None C2 C3 3.3 F/25V 1210 MLCC None C4&C5 L 1 None 1 H THL 25-24xx None 3.3 F/50V 1210 MLCC None None 2.2 H THL 25-48xx None 3.3 F/100V 1210 MLCC None None 4.7 H THL 25-12xx 3.3 F/25V 1210 MLCC 3.3 F/25V 1210 MLCC 3.3 F/25V 1210 MLCC 1800 pF/2KV 1206 MLCC 1 H THL 25-24xx 3.3 F/50V 1210 MLCC 3.3 F/50V 1210 MLCC 3.3 F/50V 1210 MLCC 1800 pF/2KV 1206 MLCC 2.2 H THL 25-48xx 3.3 F/100V 1210 MLCC 3.3 F/100V 1210 MLCC 3.3 F/100V 1210 MLCC 1800 pF/2KV 1206 MLCC 4.7 H Specifications can be changed without notice! Make sure you are using the latest documentation, downloadable at www.tracopower.com www.tracopower.com Rev. October 18. 2013 Page 5 of 5