DC/DC Converter TMDC 20 Series, 20 Watt Fully encapsulated low profile plastic case Ultra wide 4:1 input voltage range Operating temperature range 40C to +90C I/O isolation 2500 VDC Excellent efficiency up to 91 % Input filter to meet EN 55022, class A Optional DIN-Rail mount adapter No minimum load required Power good LED indicator and remote on/off function UL 62368-1 IEC 62368-1 3-year product warranty The TMDC 20 Series is a range of encapsulated high performance DC/DC con- verter modules. With a very high efficiency of up to 91% and the use of highest grade components these 20 W converters are made for a reliable operation in the temperature range of -40C up to 90C. They come in chassis mount ver- sion with screw terminal block. The 8 models have a wide 4:1 input voltage range and a tight output voltage regulation. They do not need a minimum load and offer a high efficiency also at low load conditions. They feature a remote control input and a green power good LED which indicates the presence of the output voltage. Protection against overload and short circuit are standard fea- tures of these converters. EMC characteristics and safety certifications are aligned for the operation in industrial environment. Models Order Code Input Voltage Output Voltage Output Current Efficiency Range nom. max. typ. TMDC 20-2411 5.1 VDC 4 000 mA 90 % TMDC 20-2412 12 VDC 1 670 mA 91 % 9 - 36 VDC (24 VDC nom.) TMDC 20-2415 24 VDC 835 mA 91 % TMDC 20-2418 48 VDC 420 mA 89 % TMDC 20-4811 5.1 VDC 4 000 mA 90 % TMDC 20-4812 12 VDC 1 670 mA 91 % 18 - 75 VDC (48 VDC nom.) 24 VDC 835 mA 91 % TMDC 20-4815 TMDC 20-4818 48 VDC 420 mA 89 % Options TMP-MK1 - Optional DIN-Rail Mounting Kit: www.tracopower.com/products/tmp-mk1.pdf Page 1 / 4 www.tracopower.com January 27, 2021TMDC 20 Series, 20 Watt Input Specifications Input Current - At no load 24 Vin models: 70 mA typ. 48 Vin models: 35 mA typ. - At full load 24 Vin models: 931 mA typ. 48 Vin models: 466 mA typ. Surge Voltage 24 Vin models: 50 VDC max. (100 ms max.) 48 Vin models: 100 VDC max. (100 ms max.) Under Voltage Lockout 24 Vin models: 7.5 VDC typ. 48 Vin models: 16 VDC typ. Recommended Input Fuse (The need of an external fuse has to be assessed in the final application.) Input Filter Internal Pi-Type Output Specifications Voltage Set Accuracy 2% max. Regulation - Input Variation (Vmin - Vmax) 0.5% max. - Load Variation (0 - 100%) 0.5% max. Ripple and Noise 5.1 Vout models: 100 mVp-p max. (20 MHz Bandwidth) 12 Vout models: 150 mVp-p max. 24 Vout models: 150 mVp-p max. 48 Vout models: 200 mVp-p max. Capacitive Load 5.1 Vout models: 6 800 F max. 12 Vout models: 1 160 F max. 24 Vout models: 300 F max. 48 Vout models: 75 F max. Minimum Load Not required Temperature Coefficient 0.02 %/K max. Start-up Time 30 ms max. Short Circuit Protection Continuous, Automatic recovery Output Current Limitation 150% typ. of Iout max. Overvoltage Protection 120% typ. of Vout nom. (By Zener diode) Transient Response - Response Deviation 5% max. (75% to 100% Load Step) - Response Time 250 s typ. (75% to 100% Load Step) Safety Specifications Safety Standards - IT / Multimedia Equipment CSA-C22.2, No 60950-1 EN 60950-1 EN 62368-1 IEC 60950-1 IEC 62368-1 UL 60950-1 UL 62368-1 - Certification Documents www.tracopower.com/overview/tmdc20 Pollution Degree PD 2 EMC Specifications EMI Emissions EN 61000-6-4 (Generic Industrial) EN 61204-3 (Low Voltage Power Supplies) - Conducted Emissions EN 55032 class A (internal filter) FCC Part 15 class A (internal filter) - Radiated Emissions EN 55032 class A (with external filter) FCC Part 15 class A (with external filter) External filter proposal: www.tracopower.com/overview/tmdc20 All specifications valid at nominal voltage, full load and +25C after warm-up time unless otherwise stated. Page 2 / 4 www.tracopower.com January 27, 2021