310 to 350 W Front-End AC-DC Power Supplies

The LCM300 series of enclosed front-end AC-DC power supplies comprises five single-output models, providing standard voltages of 12 V, 15 V, 23 V, 36 V, or 48 V, plus a 5 V standby output. The series is medical-safety approved and accepts a universal input of 90 to 264 VAC with a full-load efficiency of 91%. These PMBus^®-compliant digitally-controlled power supplies offer a high-level modification flexibility for application-specific functions such as special battery charging and management, peak load handling, voltage control, and fan speed profiles. Compactly housed in a 4 x 7 inches enclosure less than 1U high, the power supplies incorporate built-in smart fans for cooling and deliver up to 310 W of output power. The 24 V and 36 V models can deliver up to 350 W at operating temperatures up to 45˚C.

Features

• +/ 20% adjustment range
• 350W peak power
• 40 to +70 Dec C operation (with derating above 50 C)
• High Efficiency 91%
• Option 5V standby
• Input Range 85-264 VAC 127-374 VDC
• Frequency 47-63 Hz
• Inrush Current <= 20 A Peak
• Power Factor 0.98 TYP
• Hold-up Time 20 mSec
• Efficiency >91% TYP
• Leakage <0.3 mA @ 264 VAC
• Set Point +/- 0.5%
• Total Regulation +/-2.0%
• Noise (P-P) 0.01
• Max Units in Parallel 10
• Current Share Forced to within 10%
• Over Current Protection 105% to 120% of rated output
• Over Voltage Protection 125% to 145% of rated output
• Fan Noise <45dBA, 80% load 40C Fan Off with Inhibit

Benefits

• Conformal Coat Option
• DSP Controlled
• EMI Level B
• Industrial/Medical Safety
• Integrated ORing FET
• Low Cost
• Margin Programming
• Optional Conformal Coat
• Optional Constant Current
• PMBus Compliant
• Variable Speed "Smart Fan"