Emerson LPQ142 Series 145W Power Supply Datasheet

The 110-145 Watt LPQ142 Series is a single-wire power supply with active power factor correction (PFC) that meets the IEC EN61000-3-2 standard. It features 4 adjustable outputs, remote sense on main output, single wire current sharing, power fail and remote inhibit, built-in EMI filter, low output ripple, overvoltage protection, overload protection and thermal overload protection.


Emerson LPQ142 Series 145W Power Supply Datasheet - cover page
Brand
Emerson
Category
AC-DC Power
Document type
Datasheet
Language
English
Pages
2
File format
PDF
File size
1.4 MB
Published
07 May, 2012
Updated
30 September, 2023
MD5 checksum
BE3FE61570C8CB5A2458F7832540E293

About this manual

The LPQ142 Series is a 145‑Watt, quad‑output power supply with active power‑factor correction and IEC EN61000‑3‑2 compliance. It offers adjustable outputs on channels 1, 3, and 4, remote sense on the main output, single‑wire current sharing, and built‑in EMI filtering. Optional cover (‑C) and fan‑cover (‑CF) configurations are available.

The device operates from 85‑264 VAC or 120‑300 VDC input, delivers up to 75 % efficiency at full load, and meets multiple safety and electromagnetic compatibility standards (FCC Class B, CISPR 22, EN55022, VDE 0878 PT3, UL 60950, CE). Environmental limits include 0 °C to 50 °C operating temperature, –40 °C to 85 °C storage, 5 %–95 % non‑condensing humidity, and 0.75 G vibration tolerance.

What's inside

  • Special Features
  • Environmental
  • Electrical Specs
  • Input
  • Output
  • Technical Support
  • Ordering Information
  • Pin Assignments

Specifications

Input voltage85‑264 VAC, 120‑300 VDC
Output power110‑145 W
Number of outputsQuad (4)
Efficiency at full load75 % typical
Power factor0.99 typical
MTBF>550,000 hours at full load, 25 °C
Operating temperature range0 °C to 50 °C ambient
Storage temperature range-40 °C to 85 °C
Humidity range5 % to 95 % non‑condensing
Vibration tolerance0.75 G peak, 5 Hz‑500 Hz

Frequently asked questions

What is the input voltage range for the LPQ142 series?

The LPQ142 accepts 85‑264 VAC or 120‑300 VDC input.

How many outputs does the LPQ142 power supply provide?

It provides four (quad) independent outputs.

What is the typical efficiency of the LPQ142 at full load?

Typical efficiency is about 75 % at full load.

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