LDO LCP300-48 300W 48V Compact Power Supply (PSU)

The LCP300-48 is a compact, fully enclosed 300W output power supply for 3D printing applications. Featuring Power factory correction and Gallium Nitride technology, the LCP300-48 provides 48V outputs with an efficiency of over 90%.

Features

• Output: 48VDC (4pin+, 4pin-)
• Highly compact (120×95×35mm) and fully enclosed
• GaN technology with PFC and efficiency of up to 91%
• Overload, overvoltage, output short-circuit, and temperature protection
• Wide AC input: 100-240VAC
• Dual AC input terminals, Supports AC parallel connection

Model Breakdown

Electrical Specifications

Model	LCP300-48
Output	Output Voltage	48V
	Max Current	6.25A
	Rated Power	300W
	Ripple & Noise (Max)2	360mVp-p
	Line Regulation	±1%
	Load Regulation	±2%
	Start-up / Rise Time3	3000ms/115VAC，≤100ms/220VAC
	Hold-up Time4	≥8.3ms
Input	Voltage Range	100 - 240VAC
	Frequency Range	50-60Hz
	Efficiency	≥91%
	AC Current	3.5A/115VAC  2A/230VAC
	Inrush Current	≤80A/220VAC cold start
	Leakage Current	≤0.75mA, 240VAC/50Hz
	L/N Terminal Current5	12A Max
Protection Features	Overload Protection	≥110% of rated output power
		7.2-11.25A (48V), output voltage shuts off; recovers automatically after fault removal
	Output Short-circuit Protection	output voltage should shuts off without causing damage to the power supply; recovers automatically after fault removal
	Overvoltage Protection	≥135% of rated output voltage
		Output voltage shuts off; recovers automatically after fault removal
	Temperature Protection	When enclosure surface temperature exceeds 110°C
		Output voltage stops until temperature drops below 80°C
Environmental Conditions	Operating Temperature	-20~50℃
	Operating Humidity	20~90%RH
	Storage Temperature & Humidity	-30~85℃/ 10~95%RH
	Vibration	10-500Hz, 2G, 10 minutes/cycle, 60 minutes in each X, Y, and Z direction
Safety & Compliance	Safety Standards
	High Voltage Resistance	2.5KVAC
	Insulation Resistance	≥100MΩ
	EMC Immunity	Compliant with EN/IEC: EN55032, EN55035
	Harmonic Standards	Compliant with IEC61000-3-2, IEC61000-3-3
	LVD	Compliant with EN IEC 62368-1
	FCC	Compliant with FCC 47 CFR Part 15 Subpart B ANSI C63.4:2014
	WEEE	Compliant with Directive 2012/19/EU
Others	Dimensions	120.0mm (L) * 95.0 mm (W) * 35.0 mm (H)
	Packaging	137x105x39mm
	MTBF	50000h (25℃)
Notes	Unless otherwise specified, all specifications are measured under 230VAC input, rated load, and 25°C ambient temperature. Ripple and noise measurement: Measured at the end of the output cable, with a 0.1μF ceramic capacitor and a 47μF electrolytic capacitor. Start-up time: The time from when power is applied to the input until the output voltage rises to 90% of its rated value. Rise time: The time required for the power supply to reach its rated output value from a no-power state. Hold-up time: The duration from when the AC input is cut off to when the output drops below 5% of the standard value. L/N terminal current: Refers to AC voltage interface, where a single input is used to distribute one output. The maximum current the AC voltage interface can withstand is 12A.

Wiring & Connections

AC (Mains) Input

The LCP300-48 accepts a wide input range from 100-240VAC. There is no input voltage selection switch required. 

The LCP300-48 features dual AC input terminals. Each terminal is capable of transferring currents of up to 12A. This allows for additional AC loads to be daisy chained through the power supply, greatly simplifying wiring. 

The input connectors use M3 barrier terminals. SV2-3 or equivalent fork spade terminals are recommended for wiring.

Output Terminals

The LCP300-48 features four 48VDC output terminals.

A total combined output of 310W is possible. However, at maximum output, the power supply can become significantly hot, and external airflow directed at the casing is recommended in this situation.

The output connectors use standard screw terminals. While bare stripped wires can be used, it is highly recommended to use ferrules. Ferrules up to size VE1508 can be used.

Drawings and Dimensions

A 3D CAD model is provided here.

For more information please see the LDO Docs. Datasheet can be found here.