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3 Watt

Single and Dual Output Regulated Wide Input, 4:1


Regulated converters with wide input

Our 3 watt single and dual output DC-DC converter with a 4:1 input voltage range provides continuous short circuit protection, a SIP package of 0.86" x 0.36" x 0.44" and 82% efficiency. This design also has an external on/off control and is RoHS compliant.

INPUT

Input Voltages: Voltage Range 10%

  • Input Voltage Range
    • 24V nominal input: 9 - 36 Vdc
    • 48V nominal input: 18 - 72 Vdc
  • Input Filter: Capacitor type
  • Input Surge Voltage: 100 mS max.
    • 24V input: 50 Vdc
    • 48V input: 100 Vdc
  • Input Reflected Ripple Current
    • 24V input: 380 mAp-p max
    • 48V input: 200 mAp-p max
  • Start up time Nominal Vin and constant resistor load
    • Power Up: 30 mS typ
    • Remote ON/OFF: 30 mS typ
  • Remote ON/OFF
    • DC-DC ON: Open or high impedance
    • DC-DC OFF: Control pin applied current 2-4mA max. (via 1KΩ)
  • Remote OFF: state input current
  • Nominal Vin: 2.5 mA max.

OUTPUT

  • Output Power: 3 watts max.
  • Voltage Accuracy Full load and nominal Vin: ±1%
  • Minimum Load: 0%
  • Line Regulation LL to HL at Full load: ±0.2%
  • Load Regulation
    • No load to full load: Single ±1%
    • 5% load to 100% load: Single ±0.5%
    • No load to full load: Dual ±1%
  • Cross Regulation (Dual) Asymmeytical load 25%/100% FL: ±5%
  • Ripple and Noise 20 MHz bandwidth: 30 mVp-p
  • Temperature Coefficient: ±0.1% °C, max.
  • Transient Response Recovery Time 25% load step change: 500μS, typ
  • Short Circuit Protection: Continuous, automatic recovery

GENERAL

  • Efficiency: 74 - 82%
  • Isolation Voltage: 1600 Vdc, min.
  • Isolation Resistance: 109 Ohms, min.
  • Isolation Capacitance: 200 pF, max.
  • Switching Frequency, full load to minimum load: 1000 KHz, min.

ENVIRONMENTAL

  • Operating Ambient Temperature: -40 to 71°C without derating and 71 to 85°C with derating
  • Storage Temperature Range: -55 to 125°C
  • Cooling: Free Air Convection
  • Thermal Shock: MIL-STD-810F
  • Vibration: MIL-STD-810F
  • Relative Humidity: 5 - 95% RH

PHYSICAL

  • Design Meets Safety Standard: IEC60950-1, UL60950-1, EN60950-1
  • Case Material: Non-conductive black plastic
  • Base Material: None
  • Potting Material: Silicon (UL94-V0)
  • Dimensions: 0.86" x 0.36" x 0.44" (21.8 x 9.2 x 11.1 mm)
  • Weight: 4.8 g. (0.17 oz.)
  • MTBF (Bellcore TR-NWT-00032, Case: 50% Stress, Temperature at 40°C)
    • Bellcore TR-NWT-000332: 3.963 x 106 hrs.
    • MIL-HDBK-217F: 1.707 x 106 hrs.

EMC Characteristics

  • DEMI per EN55022
  • ESD per EN61000-4-3
  • Radiated Immunity per EN61000-4-3
  • Fast Transient per EN61000-4-4
  • Surge per EN61000-4-5
  • Conducted Immunity per EN61000-4-6
  • Class A
    • Air ±8KV Contact ±6KV Perf. Criteria A
    • 10V/m Perf. Criteria A
    • ±2KV Perf. Criteria A
    • ±1KV Perf. Criteria A
    • 10 Vrms Perf. Criteria A
    Output Current
(mA)
Input Current (mA)      
Input Voltage Range (Vdc) Output Voltage (Vdc) Min. Load Full Load  No Load Full Load Efficiency % Model Number Capacitor Load Max
Single Output
9 – 36 3.3 0 700 20 140 75 SWB3-24S33 1760μF
5 0 600 20 165 80 SWB3-24S5 1000μF
9 0 333 19 166 79 SWB3-24S9 470μF
12 0 250 20 167 79 SWB3-24S12 170μF
15 0 200 19 166 79 SWB3-24S15 110μF
18 – 72 3.3 0 700 12 71 74 SWB3-48S33 1760μF
5 0 700 12 85 78 SWB3-48S5 1000μF
9 0 700 13 85 78 SWB3-48S9 470μF
12 0 700 14 85 78 SWB3-48S12 170μF
15 0 700 14 84 79 SWB3-48S15 110μF
Dual Output
9 – 36 ±5 0 ±300 25 169 78 SWB3-24-5 ±470μF
±23 0 ±125 25 165 80 SWB3-24-12 ±100μF
±15 0 ±100 25 160 82 SWB3-24-15 ±47μF
18 – 72 ±5 0 ±300 14 85 78 SWB3-48-5 ±470μF
±12 0 ±125 14 84 79 SWB3-48-12 ±100μF
±15 0 ±100 14 82 80 SWB3-48-15 ±47μF