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.
