Polytron SWBR3 Series DC-DC Converters, 3 Watt 4:1 Wide Input Range, Miniature SIP Package for Railway Applications 0.86 x 0.36 x 0.44

• 4:1 Ultra Wide Input Range
• Miniature SIP Package: 0.86” × 0.36” × 0.44”
• High Efficiency: Up to 83%
• Low Ripple and Noise: 50mV p-p Typ.
• Input to Output Isolation: 3000Vdc
• Remote ON/Off Control

• Continuous Short Circuit and Over Current Protection
• Low Standby Power
• No Min. Load Required
• EN50155, EN45545-2
• UL, CB, CE Marked

Input and Output Specifications:

INPUT

• Operating input voltage range, Vdc
  • 24Vin(nom): 9 Min., 24 Typ., 36 Max
  • 48Vin(nom): 18 Min., 48 Typ., 75 Max.
  • 110Vin(nom): 43 Min., 110 Typ., 160 Max.
• Input Filter: Capacitor type
• Input Surge Voltage, Vdc
  • 1 second, Max., 24Vin(nom): 50 Max.
  • 1 second, Max., 48Vin(nom): 100 Max.
  • 1 second, Max., 110Vin(nom): 85 Max.
• Start up time, ms
  • Constant resistive load, Power up: 50 Typ., 75 Max.
  • Constant resistive load, Remote ON/OFF: 50 Typ., 75 Max.
• Remote ON/OFF, mA
  • Referred to –Vin pin, DC-DC On: Open or 0 - 0.5 Vdc
  • DC-DC OFF: 3 - 12 Vdc
  • Input Current of Control Pin: 2 Min., 4 Max.
  • Remote off input current: 2.5 Typ.

OUTPUT

• Voltage Accuracy, %:-1 Min., +1 Max.
• Line Regulation, %
  • Low Line to High Line at Full Load: -0.2 Min., +0.2 Max.
• Load Regulation, %
  • No Load to Full Load, Single: -0.5 Min., +0.5 Max.
  • Dual: -1 Min., +1 Max.
• Cross Regulation, %
  • Asymmetrical load 25%/100% FL, Dual: -5 Min., +5 Max.
• Ripple and Noise, mVp-p
  • Measured by 20 MHz band width with a 1μF/50V X7R MLCC
    • 50 Typ., 75 Max.
• Temperature Coefficient, %/ºC: -0.02 Min., +0.02 Max.
• Transient Response Time, µS
  • 25% load step change: 250 Typ.
• Over load protection, %
  • % of lout rated; Hiccup mode: 180 Typ.
• Short Circuit Protection: Continuous, automatics recovery

More Specifications:

GENERAL

• Isolation voltage, Vdc
  • 1 minute, Input to Output, 3000 Min.
  • Input (Output) to Case, 1500 Min.
• Isolation resistance, GΩ
  • 500Vdc, 1 Min.
• Isolation capacitance, pF: 100 Max.
• Switching frequency, kHz
  • 110Vin, 270 Min., 300 Typ., 330 Max.
  • Others: 360 Min., 400 Typ., 440 Max.

ENVIRONMENTAL

• Operating ambient temperature, ºC
  • -40 Min. +100 Max. with derating
  • M3 Version: -55 Min., +100 Max. with derating
• Maximum case temperature, ºC: +100 Max.
• Storage temperature range, ºC: -55 Min., +125 Max.
• Thermal Shock: MIL-STD-810F
• Shock: EN61373, MIL-STD-810F
• Vibration: EN61373, MIL-STD-810F
• Relative humidity: 5% to 95% RH

EMC CHARACTERISTICS

• EMI(1): EN55011, EN55032With external components: Class A, Class B
• ESD: EN61000-4-2 Air ±8kV and Contact ±6kV, Perf. Criteria A
• Radiated Immunity: EN61000-4-3, 20 V/m, Perf. Criteria A
• Fast Transient(2): EN61000-4-4, ±2KV, Perf. Criteria A
• Surge(2): EN61000-4-5, ±2KV, Perf. Criteria A
• Conducted Immunity: EN61000-4-6, 10 Vrms, Perf. Criteria A
• Power frequency magnetic field: EN61000-4-8 100A/m continuous; 1000A/m 1 second, Perf. Criteria A

Notes: 1. The standard modules meet either EMI Class A or Class B with external components. For further information, please contact Polytron Devices.

Notes: 2. An external input filter capacitor is required if the module has to meet EN61000-4-4, EN61000-4-5. The filter suggested:
The SWBR3-12XX recommended an aluminum electrolytic capacitor (Nippon chemi-con KY series, 220μF/100V) and a TVS (SMDJ70A, 70V, 3000Watt peak pulse power) to connect in parallel.
The SWBR3-48XX recommended an aluminum electrolytic capacitor (Nippon chemi-con KY series, 220μF/ 100V) and a TVS (SMDJ120A, 120V, 3000Watt peak pulse power) to connect in parallel.
The SWBR3-110XX recommended an aluminum electrolytic capacitor (Nippon chemi-con KXJ series, 150μF/ 200V) and a TVS (SMB250A, 250V, 600Watt peak pulse power) to connect in parallel.

CAUTION: This power module is not internally fused. An input line fuse must always be used.