Emerson / Artesyn / Astec LPQ252-CF Power Supply Module

The Emerson/Artesyn/Astec LPQ252-CF is a 250 W enclosed AC-DC power supply module engineered for industrial and IT applications requiring multiple output voltages and tight regulation. It accepts both AC (85–264 VAC, 47–440 Hz) and DC (120–300 VDC) inputs, delivering four independently regulated outputs: +5 VDC, +12 VDC, −12 VDC, and an adjustable ±5–25 VDC channel. Active power factor correction and integrated EMI filtering minimize line disturbance and noise.

Technical Specifications Input & Efficiency

AC input: 85–264 VAC, 47–440 Hz; DC input: 120–300 VDC

Maximum input current: 4.5 A

Efficiency: 75% typical at full load

Power factor: 0.99 typical

Inrush current: 20 A maximum at 25 °C cold start

Safety ground leakage: <0.5 mA @ 50/60 Hz, 264 VAC Output Channels

+5 VDC: 35 A maximum, 40 A peak (±2% regulation, 50 mV p-p ripple)

+12 VDC: 10 A maximum, 12 A peak (±3% regulation, 120 mV p-p ripple)

−12 VDC: 6 A maximum, 8 A peak (±3% regulation, 120 mV p-p ripple)

±5–25 VDC adjustable: 6 A maximum, 8 A peak (±3% regulation, 240 mV p-p ripple max.) Protection & Monitoring

Short-circuit protection on all outputs; case overload at 110–145% above peak rating

Overvoltage protection: +5 V at 5.7–6.7 VDC; other outputs 10–25% above nominal

Thermal overload protection enabled

Hold-up time: 16 ms @ 250 W load, 115 VAC nominal

Minimum load: 3 A required on +5 V; 0 A on others

Key Features

Quad-output architecture with independent regulation on each channel

Supervisory outputs: +5 V @ 100 mA, +12 V @ 500 mA

TTL power-fail and DC power-good signals with 50–150 msec assertion time

Remote inhibit via external contact (N.O. or N.C.)

Remote sense compensation (0.5 V lead drop minimum)

Single-wire current sharing

Convection-cooled operation; optional fan cover (-CF) available for forced-air modes

Peak load capability: <30 seconds duration, 10% maximum duty cycle

Typical Applications Industrial process control, IT infrastructure, embedded systems, telecommunications equipment, and test stations requiring stable, regulated multi-voltage supplies with supervisory signaling.