LPQ170 Series

85-175 Watt AC-DC Power Supplies

The LPQ170 series of AC-DC power supply series comprises two quad output models. Both models offer +5 V, +12 V and -12 V outputs, plus a floating output which on one model can be adjusted over the range 3.3 V to 25 V, and on the other, 3.3 V to 5.5 V. Both models also provide a regulated 5 V standby output. The LPQ173 is rated at 85 watts with convection cooling and 175 watts with 30 CFM forced air cooling; the LPQ172 is rated at 110 watts with convection cooling and 175 watts with 30 CFM forced air cooling. Measuring just 4.25 x 8.5 x 1.5 inches, the power supplies are ideal for 1U (1.75-inch) rack installations and other low-profile applications.

Datasheet Technical Documentation Print This Page
  • Total Max Power:
    175 W
  • Total Max Current:
    30 A
  • Input Voltage:
    85 V to 264 V
  • Output Voltage:
    -25 V to 25 V
  • Outputs:
  • Size (L x W x H):
    4.250" x 8.500" x 1.500"
  • Warranty:
    2 years
  • Operating Temperature:
    0 to +70°C

Electrical Specifications

  • Input
  • Output
  • Logic Control
  • EMI filter: Meets FCC Class B conducted CISPR 22 Class B conducted EN55022 Class B conducted VDE 0878 PT3 Class B conducted
  • Input range: 85-264 VAC, 120-300 VDC
  • Power factor: 0.99 typical
  • Efficiency: 75% typical at full load
  • Frequency: 47-63 Hz
  • Inrush current: 38 A max, cold start @ 25°C
  • Safety ground leakage current: 1.0 mA @ 50/60 Hz, 264 VAC input
  • Maximum power: 110 W convection (75 W with cover) 175 W with 30 CFM forced air (130 W with cover)
  • Hold-up time: 20 ms @175 W load at nominal line
  • Overload protection: Short circuit protection on all outputs. Case overload protected @ 110-145% above peak rating
  • Standby output: 5 V @ 200 mA regulated ±5%
  • Adjustment range: 3.3 - 5.5V on main; -12 - 15V on 3rd output 3.3 - 25 V on 4th output
  • Overvoltage protection: Tracks outputs 1, 3 & 4; 15 to 35%
  • Remote sense: Compensates for 0.5 V lead drop min. Will operate without remote sense connected. Reverse connection protected.
  • Remote inhibit: Requires contact closure to inhibit outputs
  • AC Power failure: TTL logic signal goes high 100 - 500 msec after V1 output; It goes low at least 4 msec before loss of regulation
  • DC Ok: TTL logic signal goes high after main output is in regulation. It goes low when there is a loss of regulation
  • Overvoltage protection
  • IEC EN61000-3-2 compliance
  • DC power good
  • Low output ripple
  • 5 V standby output
  • Active power factor correction
  • Adjustable outputs on 1, 3 & 4
  • Single wire current sharing
  • Built-in EMI filter
  • Power fail and remote inhibit
  • Thermal overload protection
  • Adjustable floating 4th output
  • Remote sense on main output
  • Optional cover (-C suffix)
  • Overload protection

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