LPT40-M Medical Series

40—55 Watt Medical AC-DC Power Supplies

The LPT40-M series of open-frame AC-DC power supplies comprises two triple output models, covering standard voltages from -15 V to 15 V. Both feature medical safety approvals, with a very low safety ground leakage current of less than 75 µA. Each model accepts a universal input of 85—264 Vac or 120—300 Vdc. These compact switch-mode power supplies feature main output overvoltage protection and remote sense, with short-circuit protection on all outputs. They provide 40 watts of output power with free air convection cooling and 55 watts with 30 CFM of forced air. Less than 1U high, LPT40-M power supplies are designed for medical, test and measurement, single-board computers, telecommunications and networking applications.

Datasheet Technical Documentation Print This Page
  • Total Max Power:
    55 W
  • Total Max Current:
    5 A
  • Input Voltage:
    85 V to 264 V
  • Output Voltage:
    -15 V to 15 V
  • Outputs:
  • Size (L x W x H):
    5.000" x 3.000" x 1.200"
  • Warranty:
    2 years
  • Operating Temperature:
    -20°C to +70°C

Electrical Specifications

  • Input
  • Output
  • Input range: 85 - 264 Vac, 120 - 300 Vdc
  • Input current: 1 A max. (RMS) @ 115 Vac
  • Efficiency: 70% typical at full load
  • Inrush current: < 18 A peak @ 115 Vac; < 36 A peak @ 230 Vac
  • EMI filter: FCC Class A conducted CISPR 22 Class A conducted
  • Frequency: 47 - 440 Hz
  • Overvoltage protection: 5.7 to 6.7 Vdc on main output
  • Overload protection: Short circuit protection on all outputs.
  • Cross regulation: ± 2% on output 1; ± 5% on outputs 2, 3
  • Maximum power: 40 W for convection, 55 W with 30 CFM
  • Remote sense: Compensates for 0.5 V lead drop min
  • Adjustment range: -5, +10% minimum
  • Hold-up time: 20 ms @ 40 W load, 115 Vac nominal line
  • LPX40 enclosure kit available
  • Universal input
  • 3" x 5" footprint
  • Remote sense on main output
  • Built-in EMI filter
  • Low output ripple
  • Adjustable main output
  • Overvoltage protection
  • 110 KHz switching frequency
  • Less than 1U high
  • Overload protection

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