RDT-6Y BEL | Alldatasheet

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Technical content

belfuse.com/power-solutions RDT-6Y Series

6 W Isolated DC-DC Converter

The RDT-6Y Series is a high-performance product, specifically designed for a variety of railway applications. The DC-DC converters feature 6 W single output voltage, wide input voltage from 14 - 160 VDC and extended operating temperature range from -40 to 105°C. Additional product features include input under-voltage protection, output over-voltage, short-circuit and over- current protection. The products are widely used in railway systems and associated equipment. Key Features & Benefits

  • Ultra-wide 12:1 input voltage range: 14 – 160 VDC
  • High efficiency up to 83%
  • Reinforced insulation, I/O isolation test voltage 3 kVAC
  • Operating ambient temperature range -40 °C to +105 °C
  • Input under-voltage protection, output over–voltage, over-current, short-circuit protection
  • Industry standard DIP-24 package and pin-out
  • Meets EN 50155 and AREMA standard
  • Safety approved according to IEC 62368-1 & UL/CSA 62368-1

Applications

  • Railway related equipment

tech.support@psbel.com belfuse.com/power-solutions RDT-6Y Series 1. MODEL SELECTION PART NUMBER INPUT VOLTAGE RANGE [VDC] OUTPUT VOLTAGE [VDC] MAX. OUTPUT CURRENT [mA] TYPICAL EFFICIENCY [%] MAX. CAPACITIVE LOAD [µF] RDT-6Y03 14 – 160 3.3 1454 75 1000 RDT-6Y05 14 – 160 5 1200 80 1000 RDT-6Y12 14 – 160 12 500 83 470 RDT-6Y15 14 – 160 15 400 83 470 RDT-6Y24 14 – 160 24 250 83 220 2. INPUT SPECIFICATIONS PARAMETER DESCRIPTION / CONDITIONS MIN. TYP. MAX. UNIT Input Voltage Range Nominal – 110 – VDCContinuous operation 16.8 – 160 For ≤ 100 ms 14 – – Input Current 24 V input, full load – 0.27 0.33 A72 V input, full load – 0.09 0.10 110 V input, full load – 0.06 0.07 No-Load Power Consumption Full input range – 0.6 1.3 W Reflected Ripple Current Nominal input voltage – 50 – mA Surge Voltage 1 sec. max. – 200 VDC Input Under-Voltage Protection 9 11.5 – VDC Start-up Time – 10 120 ms 3. OUTPUT SPECIFICATIONS PARAMETER DESCRIPTION / CONDITIONS MIN TYP. MAX. UNIT Voltage Accuracy Nominal input voltage, full load – ±1 ±2 % Linear Regulation Input voltage variation from min. to max. at full load – – ±0.5 % Load Regulation Nominal input voltage, 10% - 100% load – ±0.5 ±1 % Transient Recovery Time 25% load step change @ 25°C – – 500 µs Transient Response Deviation – ±3 ±8 % Temperature Coefficient Nominal input voltage, full load – – ±0.03 % / °C Ripple & Noise 1 20 MHz bandwidth, full load @ 25°C – 80 150 mVp-p Over-Voltage Protection Input voltage range 110 – 160 % Vo Over-Current Protection Input voltage range 110 – 260 % Io Short-Circuit Protection Input voltage range Hiccup, continuous, self-recovery 1 For ripple and noise measuring method, please refer to Figure 3.

Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 49 8941 +1 866 513 2839 © 2022 Bel Fuse Inc. BCD.20209_A 15 December 2022 4. GENERAL SPECIFICATIONS PARAMETER DESCRIPTION / CONDITIONS MIN TYP. MAX. UNIT Isolation Electric Strength Test Input-output 3000 – – VAC Insulation Resistance Input-output resistance at 500 VDC 1000 – – MΩ Isolation Capacitance Input-output capacitance at 100 kHz / 0.1 V – 500 – pF Operating Temperature Linear derating >85°C -40 – 105 °C Storage Temperature -55 – 125 °C Pin Soldering Resistance Temperature Soldering spot is 1.5 mm away from case for 10 seconds – – 300 °C Storage Humidity Non-condensing 5 – 95 %RH Switching Frequency PWM mode – 170 – KHz MTBF IEC 61709 @ 25 °C 1000 – – kh Dry Heat Test Ta +85°C (conduction cooling) EN 60068-2-2, Be Shock and Vibration Test IEC/EN 61373 Category 1, Class B AREMA Part 11.5.1 Class C, D, E. I, J Pollution Level PD 3 Fire & Smoke Compliance EN 45545-2, HL3 Salt Mist Test Duration 48 h EN 60068-2-11, Ka Cyclic Damp Heat Test 2 cycles @ +55 °C EN 60068-2-30, Db variant 2 Altitude 1 5000 m Low Temperature Start-Up & Storage Test Ta -40 °C EN 60068-1, Ad and Ab 1 Derating is needed for altitudes above 2000 m. 5. MECHANICAL SPECIFICATIONS PARAMETER DESCRIPTION VALUE Case Material Black plastic bottom cover (UL94 V-0) Dimension 31.6 x 20.3 x 12.5 mm Weight 17 g (Typ.) Cooling Method Free air convection cooling

tech.support@psbel.com belfuse.com/power-solutions RDT-6Y Series 6. ELECTROMAGNETIC COMPATIBILITY (EN50121-3-2) PARAMETER DESCRIPTION CLASS / CRITERIA Emission 1 CE EN 55016-2-1 150 kHz – 500 kHz; 79 dBuV (see Fig. 4 for recommended circuit) 500 kHz – 30 MHz; 73 dBuV (see Fig. 4 for recommended circuit) CLASS A RE CISPR16-2-3 30 MHz – 230 MHz ; 40 dBuV/m at 10 m (see Fig. 4 for recommended circuit) 230 MHz – 6 GHz; 47 dBuV/m at 10 m (see Fig. 4 for recommended circuit) CLASS A Immunity ESD EN 61000-4-2 Contact ±6 kV/Air ±8 kV perf. Criteria A RS EN 61000-4-3 80 – 800 MHz; 20 V/m 800 – 1000 MHz; 20 V/m 1400 – 2000 MHz; 10 V/m 2000 – 2700 MHz; 5 V/m 5100 – 6000 MHz; 3 V/m perf. Criteria A EFT EN 61000-4-4 ±2 kV; 5/50 ns; 5 kHz (see Fig. 4 for recommended circuit) perf. Criteria A Surge EN 61000-4-5 Line to line ±1 kV (42 Ω, 0.5 μF) (see Fig. 4 for recommended circuit) Line to line ±1 kV (2 Ω, 18 μF) (see Fig. 4 for recommended circuit) perf. Criteria A CS EN 61000-4-6 0.15 MHz – 80 MHz 10 V r.m.s perf. Criteria A

1 Corresponds or exceeds EN50121-3-2

  1. ELECTROMAGNETIC COMPATIBILITY (AREMA) PARAMETER DESCRIPTION CLASS / CRITERIA Emissions CE CISPR16-2-1 CISPR16-1-2 150 kHz – 500 kHz; 79 dBuV (see Fig. 4 for recommended circuit) 500 kHz – 30 MHz; 73 dBuV (see Fig. 4 for recommended circuit) CLASS A RE CISPR16-2-3 30 MHz – 230 MHz; 40 dBuV/m at 10 m (see Fig. 4 for recommended circuit) 230 MHz – 1 GHz; 47 dBuV/m at 10 m (see Fig. 4 for recommended circuit) CLASS A Immunity ESD IEC 61000-4-2 Contact ±6 kV/Air ± 8 kV perf. Criteria A RS IEC 61000-4-3 80 – 1000 MHz; 10 V/m 160 – 165 MHz; 20 V/m 450 – 470 MHz; 20 V/m 800 – 960 MHz; 20 V/m 1400 – 2000 MHz; 20 V/m 2100 – 2500 MHz; 5 V/m perf. Criteria A EFT IEC 61000-4-4 ±2 kV 5/50 ns; 5 kHz (see Fig. 4 for recommended circuit) perf. Criteria A Surge IEC 61000-4-5 Line to line ±2 kV (2 Ω, 18 μF) (see Fig. 4 for recommended circuit) perf. Criteria A CS IEC 61000-4-6 0.15 MHz-80 MHz; 10 V r.m.s perf. Criteria A MS IEC 61000-4-8 IEC 61000-4-8 60 Hz; 100 A/m (see Fig. 4 for recommended circuit) 60 Hz; 300 A/m (see Fig. 4 for recommended circuit) perf. Criteria A

Figure 1. Efficiency vs. Input Voltage Figure 2. Efficiency vs. Output Load

9.1 RIPPLE & NOISE

All the DC-DC converters of this series are tested before delivery using the recommended circuit shown in Fig. 3. Figure 3. Recommended Test Circuit

12 VDC

15 VDC

24 VDC

9.2 TYPICAL APPLICATION

  1. Please ensure that at least a 100 µF electrolytic capacitor is connected at the input in order to ensure adequate voltage surge
  2. Output ripple can be further reduced by appropriately increasing the output capacitor values C10 and/or by selecting capacitors

9.4 EMC COMPLIANCE CIRCUIT

  1. External circuit breaker and diode D1 form an anti-reverse circuit, and the diode withstand voltage requirement is above 250 V;
  2. EMC Filter will be provided in a modular form, here is a recommended circuit and parameters, as shown in Fig. 4.

Users can also build it themselves. Figure 4. Recommended EMC Filtering 1 Use of EMC Filter Bel Power P/N: FRD6-00 is recommended. input current and below rated working current of reverse polarity diode.

  1. MECHANICAL SPECIFICATIONS

11.1 MECHANICAL DIMENSIONS AND RECOMMENDED LAYOUT

Figure 5. Mechanical Drawing of Standard Model equipment used in hazardous environments, or nuclear control systems. date manufactured. Specifications are subject to change without notice.