RFT-30Y BEL | Alldatasheet

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Technical content

belfuse.com/power-solutions RFT-30Y Series

30 W Isolated DC-DC Converter

The RFT-30Y Series is a high-performance product, specifically designed for a variety of railway applications. The DC-DC converters feature 30 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, over-current and over-temperature protection and output voltage trim adjustment. 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 90%
  • 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, over-temperature protection
  • Industry standard 2" x 1" 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 RFT-30Y Series 1. MODEL SELECTION PART NUMBER INPUT VOLTAGE RANGE [VDC] OUTPUT VOLTAGE [VDC] MAX. OUTPUT CURRENT [mA] TYPICAL EFFICIENCY [%] MAX. CAPACITIVE LOAD [µF] SUFFIX RFT-30Y05x 14 – 160 5 6000 88 6800 No suffix = Standard model C = Added Heatsink F = Added Flanged baseplate RFT-30Y12x 14 – 160 12 2500 87 3300 RFT-30Y15x 14 – 160 15 2000 87 2200 RFT-30Y24x 14 – 160 24 1250 88 680 RFT-30Y28x 14 – 160 28 1071 88 560 RFT-30Y48x 14 – 160 48 625 89 330 RFT-30Y54x 14 – 160 54 556 89 270 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 – 1.45 1.54 A72 V input, full load – 0.47 0.51 110 V input, full load – 0.32 0.33 No-Load Power Consumption Full input range – 1.2 2.0 W Reflected Ripple Current Nominal input voltage – 150 – mA Surge Voltage 1 sec. max. – 200 VDC Input Under-Voltage Protection 10 12.5 – VDC Start-up Time – 50 100 ms Ctrl 1 Module on Ctrl pin open or pulled high (3.5 - 12 VDC) Module off Ctrl pin pulled low to -Vin (0 - 1.2 VDC) Input power consumption when off, full input range – 0.7 1.6 W 1 The Ctrl pin voltage is referenced to input -Vin. 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 – 100 200 mVp-p Output Voltage Trim Range 90 – 110 % Vo Over-Temperature Protection Max. case temperature – 115 125 °C 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.20203_A 16 December 2022 4. GENERAL SPECIFICATIONS PARAMETER DESCRIPTION / CONDITIONS MIN TYP. MAX. UNIT Isolation Electric Strength Test Input-output 3000 – – VACInput-case 2800 – – Output-case 2100 – – Insulation Resistance Input-output resistance at 500 VDC 1000 – – MΩ Isolation Capacitance Input-output capacitance at 100 kHz / 0.1 V – 1500 – pF Operating Temperature -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 Aluminum alloy case, black plastic bottom cover (UL94 V-0) Dimension Without heat sink 50.8 x 25.4 x 11.8 mm With heat sink (suffix C) 50.8 x 25.4 x 22.8 mm With flanged baseplate (suffix F) 50.8 x 40.0 x 11.8 mm Weight Without heat sink 42 g (Typ.) With heat sink (suffix C) 45 g (Typ.) With flanged baseplate (suffix F) 61 g (Typ.) Cooling Method Conduction cooling or forced air cooling. Free air convection cooling with additional heat sink.

tech.support@psbel.com belfuse.com/power-solutions RFT-30Y 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. 6 for recommended circuit) 500 kHz – 30 MHz; 73 dBuV (see Fig. 6 for recommended circuit) CLASS A RE CISPR16-2-3 30 MHz – 230 MHz ; 40 dBuV/m at 10 m (see Fig. 6 for recommended circuit) 230 MHz – 6 GHz; 47 dBuV/m at 10 m (see Fig. 6 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. 6 for recommended circuit) perf. Criteria A Surge EN 61000-4-5 Line to line ±1 kV (42 Ω, 0.5 μF), line to ground ± 2 kV (42 Ω, 0.5 μF) (see Fig. 6 for recommended circuit) Line to line ±1 kV (2 Ω, 18 μF) line to ground ± 2kV (12 Ω, 9 μF) (see Fig. 6 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. 6 for recommended circuit) 500 kHz – 30 MHz; 73 dBuV (see Fig. 6 for recommended circuit) CLASS A RE CISPR16-2-3 30 MHz – 230 MHz; 40 dBuV/m at 10 m (see Fig. 6 for recommended circuit) 230 MHz – 1 GHz; 47 dBuV/m at 10 m (see Fig. 6 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. 6 for recommended circuit) perf. Criteria A Surge IEC 61000-4-5 Line to line ±2 kV (2 Ω, 18 μF); line to ground ± 2 kV (2 Ω, 18 μF) (see Fig. 6 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. 6 for recommended circuit) 60 Hz; 300 A/m (see Fig. 6 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

5 VDC

12 VDC

15 VDC

24 VDC

28 VDC

48 VDC

54 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 C2/C3 and/or by selecting capacitors
  3. Recommended circuit for Ctrl negative logic refer to Fig. 4.

Figure 4. Recommended circuit for Ctrl negative logic

9.3 TRIM FUNCTION FOR OUTPUT VOLTAGE ADJUSTMENT (open if unused)

Figure 5. Trim resistor connection (dashed line shows internal resistor network)

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. 6 and Fig. 7.

Users can also build it themselves. Figure 6. Recommended EMC Filtering with PE Figure 7. Recommended EMC Filtering without PE

tech.support@psbel.com belfuse.com/power-solutions RFT-30Y Series COMPONENTS VALUE RECOMMENDED COMPONENT C6, C7 0.1 µF CERAMIC; 0.1 µF; 10%; 630 V; X7R; 1812; -55 to +125°C LDM1 4.7 µH POWER CHOKE; 4.7 μH; 20%; 14 A; 30mOhm;-40 to +125°C LCM1, LCM2 ≥ 1.2 mH COMMON MODE; TOROIDAL; FERRITE; THT; 1.2 mH; 2.5 A; 35 mOhm; -40 to +115°C CY1, CY2, CY7, CY8, 1 nF CERAMIC; X1/Y1; 1 nF; 10%; 400 V; PITCH 10 mm; -40 to+125°C CY3, CY5 2.2 nF CERAMIC; X1/Y1; 2.2 nF; 10%; 400 V; PITCH 10 mm; -40 to+125°C CY4 4.7 nF CERAMIC; Y1; 4.7 nF; 20%; 400 V; PITCH 10 mm; -40 to +125°C D1 16 A SCHOTTKY; DUAL; 600 V; 16 A; Vf 1.5 V; TO220; -55 to +150°C; COMMON CATHODE MOV1 220 V / 58J VDR; 220 V; 4 kA; 58 J; THT; PITCH 7.5 mm; -40 to +85°C MOV2 220 V / 19 J VDR; 220 V; 1.8 kA; 19 J; THT; PITCH 5 mm; -40 to +105°C Fuse or Breaker 2 6 A Type C 1 Use of EMC Filter Bel Power P/N: FRF30-00 is recommended. 2 Type of fuse / circuit breaker to be selected according to the application requirements. The current rating shall be above the maximum working input current and below rated working current of reverse polarity diode. SURGE STANDARD COMPONENTS VALUE RECOMMENDED COMPONENT line to line ± 1 kV (42 Ω, 0.5 μF) line to ground ± 2 kV (42 Ω, 0.5 μF) line to line ± 1 kV (2 Ω, 18 μF) line to ground ± 2 kV (12 Ω, 9 μF) C01 220 μF ELECTROLYTIC; Al, WET; RADIAL; 220 μF; 20%; 250 V; Ø 16 x 20 mm; PITCH 7.5 mm; -40 to +105°C C02 220 μF ELECTROLYTIC; Al, WET; RADIAL; 220 μF; 20%; 250 V; Ø 16 x 20 mm; PITCH 7.5 mm; -40 to +105°C line to line ± 2 kV (2 Ω, 18 μF) line to ground ± 2 kV (2 Ω, 18 μF) C01 330 μF ELECTROLYTIC; Al, WET; RADIAL; 330 μF; 20%; 250 V; Ø 18 x 40 mm; PITCH 5 mm; -40 to +105°C C02 220 μF ELECTROLYTIC; Al, WET; RADIAL; 220 μF; 20%; 250 V; Ø 16 x 20 mm; PITCH 7.5 mm; -40 to +105°C

  1. MECHANICAL SPECIFICATIONS

11.1 MECHANICAL DIMENSIONS AND RECOMMENDED LAYOUT (STANDARD MODEL)

Figure 8. Mechanical Drawing of Standard Model

11.2 MECHANICAL DIMENSIONS AND RECOMMENDED LAYOUT (FLANGED BASEPLATE - SUFFIX F)

Figure 9. Mechanical Drawing of Model with Flanged Baseplate (Suffix F)

Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 49 8941 +1 866 513 2839 © 2022 Bel Fuse Inc. BCD.20203_A 16 December 2022

11.3 MECHANICAL DIMENSIONS AND RECOMMENDED LAYOUT (HEATSINK - SUFFIX C)

Figure 10 Mechanical Drawing of Model with Heatsink (Suffix C) For more information on these products consult: tech.support@psbel.com NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice.