HRCD20 Series DC-DC Converters for Railway Applications

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Item Number: HRCD20

HRCD20 Series 20-watt DC-DC converters for railway applications feature a 12:1 wide input range, low standby power, 3,000V AC reinforced insulation and no minimum load. Built-in safeguards include an inrush current limiting feature and an enhanced hold-up function as well as reverse polarity, overcurrent, overvoltage, short circuit, undervoltage and over-temperature protections. The converters also provide an internal EN 55032 Class B filter and operate at up to 5,000 meters in altitude. HRCD20 DC-DC converters meet the IEC/EN/UL 62368-1 safety standard and are compliant with RoHS and REACH regulations. Customers may choose a chassis-mount or DIN rail version.

HRCD20 Series Specification Sheet PDF

Daburn Part Number	Input Voltage Range Vac	Output Voltage Vdc	Output Current at Full Load mA	Input Current at No Load mA	Efficiency %	Maximum Capacitor Load µF
HRCD20-72S5	14-160	5	4000	15	85	5000
HRCD20-72S5.1	14-160	5.1	4000	15	85	5000
HRCD20-72S12	14-160	12	1670	15	85	850
HRCD20-72S15	14-160	15	1330	15	85	700
HRCD20-72S24	14-160	24	835	15	85	200
HRCD20-72-12	14-160	±12	±833	15	85	±500
HRCD20-72-15	14-160	±15	±667	15	85	±300

Input and Output Specifications:

INPUT

Operating Input Voltage Range:
- 14-160Vdc
Input Fuse: 3.15A, Time-Lag
In-rush current: 15A
Start up voltage: 14Vdc
Shutdown voltage: 10-13Vdc
Start up time: 50ms, Constant resistive load, Power up
Input surge voltage: 200Vdc Max., 1 second Max.
Interruption of power supply: 10 Min., EN50155 Class S2
Remote ON/OFF:
- Positive logic, DC-DC ON: Open or 3~12Vdc
- Positive logic, DC-DC OFF: Short or 0~1.2Vdc
- Input current of Ctrl pin: ±0.5mA
- Remote off input current: 2.5mA

OUTPUT

Voltage accuracy: ±1%
Line regulation: ±1%, Low Line to High Line at Full Load
Load regulation:
- 5 Vout, 5.1 Vout: ±1.5%
- 12 Vout, 15 Vout, 24 Vout: ±1%
Cross regulation: ±5%, Asymmetrical Load 25%/100% FL, Dual
Voltage adjustability:
- Single output, 12 Vout: ±10%
- Others: -10Min., 20Max
Ripple and noise, Measured by 20MHz bandwidth:
- 5Vout, 5.1Vout: 75 mVp-p
- 12Vout, 15Vout: 100 mVp-p
- 24Vout: 125 mVp-p
- 12Vout, 15Vout: 100 mVp-p
Temperature coefficient: ±0.02 %°C
Transient response recovery time: 250µS
Over voltage protection:
- 5, 5.1 Vout: 6.3-7.4 Vdc
- 12 Vout: 13.5-19.6 Vdc
- 15 Vout: 18.3-22.0 Vdc
- 24 Vout: 29.1-32.5 Vdc
Output indicator: Green LED
Over Load Protection: Percent of Iout rated, Hiccup mode: 155%
Short Circuit Protection: Continuous, automatic recovery

More Specifications:

GENERAL

Isolation Voltage:
- Input to Output, 1 minute: 3,000Vac
- Input (Output) to Case: 2,250Vac
Isolation Resistance: 500Vdc, 1GΩ
Isolation capacitance: 6,000 pF
Switching Frequency: 190-250kHz

ENVIRONMENTAL

Operating Ambient Temperature:
- With derating: -40-100ºC
Over temperature protection, Case of DC/DC module: 115ºC
Storage Temperature Range:
- -55-105ºC
Operating Altitude: 5000m
Thermal shock: MIL-STD-810F
Shock:
- U: EN61373, MIL-STD-810F
- U-DR: EN61373, IEC60068-2-27
Vibration:
- U: EN61373, MIL-STD-810F
- U-DR: EN61373, IEC60068-2-6
Relative Humidity: 5% to 95% RH

PHYSICAL

Safety approvals (Pending): IEC/ EN/ UL62368-1, EN50155, EN45545-2
Standard approvals (Pending): EN50155 EN45545-2
Chassis material: Aluminum
Weight: 95g (3.35oz)
MTBF: MIL-HDBK-217F, Full load, 1.003 x 10⁶ hrs

EMC CHARACTERISTICS

EMI:
- EN55032, EN50121-3-2: Class B
EMS: EN55035, EN50121-3-2
ESD: EN61000-4-2, Air ±8kV and contact ±6kV, Perf. Criteria A
Radiated Immunity: EN61000-4-3, 20V/m, Perf. Criteria A
Fast Transient: EN61000-4-4, ±2kV, Perf. Criteria A
Surge: EN61000-4-5, EN55035:±1kV and EN50121-3-2:±2kV, Perf. Criteria A
Conducted Immunity: EN61000-4-6, 10 Vr.m.s, Perf. Criteria A
Power Frequency Magnetic Field: EN61000-4-8, 100 A/m continuous; 1000A/m 1 second, Perf. Criteria A

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