LDO LCP300-48 48V 300W Power Supply

The LDO LCP300-48 is a compact, fully enclosed 300W power supply for 3D printing applications. Gallium nitride switching and power factor correction deliver 48V at over 90% efficiency.

It takes an input from 100 to 240 VAC with no selector switch required, and the two AC input terminals support parallel connection with a 12A ceiling across the AC interface. The input connectors use M3 barrier terminals, so SV2-3 fork spades or equivalent are recommended, while the 48V output comes out on four positive and four negative screw terminals. Protection against overload, overvoltage, short circuits and overheating is built in, with automatic recovery once a fault clears.

Wiring diagrams and CAD model available on LDO's documentation

Technical Parameters

Output

Output Voltage 48 VDC

Rated Power 300 W

Max Current 6.25 A

Output Terminals (4×) 48 VDC screw terminal

Ripple & Noise 360 mVp-p

Line Regulation ±1%

Load Regulation ±2%

Hold-up Time ≥8.3 ms

Input

Voltage Range 100-240 VAC (no selector switch)

Frequency Range 50-60 Hz

Efficiency ≥91%

Power Factor Correction Yes

Switching Technology GaN (gallium nitride)

AC Current 3.5 A @ 115 VAC | 2 A @ 230 VAC

Inrush Current ≤80 A @ 220 VAC cold start

Leakage Current ≤0.75 mA @ 240 VAC / 50 Hz

Input Terminals (2×) M3 barrier, 12 A max across interface (SV2-3 fork spade recommended)

Protection

Overload ≥110% of rated power, automatic recovery

Overvoltage ≥135% of rated output voltage, automatic recovery

Output Short Circuit Output shuts down, automatic recovery

Thermal Shuts down above 110 °C case surface, recovers below 80 °C

Physical

Dimensions 120 × 95 × 35 mm

Packaged Dimensions 137 × 105 × 39 mm

Enclosure Fully enclosed

Environmental

Operating Temperature -20 to 50 °C

Operating Humidity 20-90% RH

Storage -30 to 85 °C, 10-95% RH

Vibration 10-500 Hz, 2G, 60 minutes per axis

MTBF 50,000 h @ 25 °C

Safety & Compliance

High Voltage Resistance 2.5 kVAC

Insulation Resistance ≥100 MΩ

EMC EN55032, EN55035

Harmonics IEC61000-3-2, IEC61000-3-3

LVD EN IEC 62368-1

FCC 47 CFR Part 15 Subpart B, ANSI C63.4:2014

WEEE Directive 2012/19/EU