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0.5 to 3 Watt DC-DC Converters

3 Watt

4:1 Wide Input Range, Miniature SIP Package for Railway Applications


DC-DC Converters For Railway Applications

Our SWBR3 series of 3-watt DC DC converters features high efficiency up to 83%, low ripple and noise and 3,000-Vdc input to output isolation—all contained in a miniature SIP package of 0.86 x 0.36 x 0.44 inches. Suitable for railway applications, this device includes remote ON/OFF control, low standby power and short circuit and overcurrent protection. The design meets EN50155 and EN45545-2 standards.

SWBR3-v2

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

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 Vr.m.s, 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.

Input Voltage
Range (Vdc)
Output Voltage
(Vdc)
Output Current
at full load A
Input Current
at No load mA
Efficiency
%
Model Number* Maximum
Capacitor Load
μF
9-36 3.3 700 4 76 SWBR3-24S33 1100
9-36 5 600 4 81 SWBR3-24S5 550
9-36 9 333 81 SWBR3-24S9 340
9-36 12 125 4 83 SWBR3-24S12 240
9-36 15 200 4 83 SWBR3-24S15 240
9-36 24 125 4 82 SWBR3-24S24 90
18-75 3.3 700  4 75 SWBR3-48S33 1100
18-75 5 600  4 81  SWBR3-48S5 550 
18-75 333  4 81  SWBR3-48S9 340 
18-75 12  125  4 82  SWBR3-48S12 240 
18-75 15  200  4 82  SWBR3-48S15 240 
18-75 24  125  4 82  SWBR3-48S24 90 
43-160 3.3 700 2 76 SWBR3-110S33 1100
43-160 5 600 2 80 SWBR3-110S5 550
43-160 9 333 2 81 SWBR3-110S9 340
43-160 12 125 2 82 SWBR3-110S12 240
43-160 15 200 2 83 SWBR3-110S15 240
43-160 24 125 2 83 SBBR3-110S24 90
9-36 ±5 ±300 6 80 SWBR3-24-5 ±340
9-36 ±12 ±125 6 82 SWBR3-24-12 ±170
9-36 ±15 ±100 8 82 SWBR3-24-15 ±90
18-75 ±5 ±300 6 80 SWBR3-48-5 ±340
18-75 ±12 ±125 6 82 SWBR3-48-12 ±170
18-75 ±15 ±100 8 82 SWBR3-48-15 ±90
43-160 ±5 ±300 2 80 SWBR3-110-5 ±340
43-160 ±12 ±125 2 83 SWBR3-110-12 ±170
43-160 ±15 ±100 2 81 SWBR3-110-15 ±90