MORNSUN LOF550-20B48 SMPS Switching Mode Power Supply Module 550W 48V 11A PFC

LOF550 Module d'Alimentation à Découpage 550W 48V 11A PFC
This LOF550-20B48 switching-mode power supply module delivers 48V and 11A for 550W of power. The module features high-quality components and is mounted on a metal plate for efficient heat dissipation. The LOF550-20B48 power supply accepts a wide input voltage range from 90V to 260V AC. Moreover, the module incorporates PFC (Power Factor Correction), enabling it to achieve an efficiency rate of 94%.

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Shipping date: 05-03-2024.

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MORNSUN LOF550-20B48

SMPS Switching Mode Power Supply Module 550W 48V 11A PFC

LOF550-20B48 Module d'Alimentation à Découpage SMPS 550W 48V 11A PFC

This LOF550-20B48 switching-mode power supply module delivers 48V and 11A for 550W of power. The module features high-quality components and is mounted on a metal plate for efficient heat dissipation. The LOF550-20B48 power supply accepts a wide input voltage range from 90V to 260V AC. Moreover, the module incorporates PFC (Power Factor Correction), enabling it to achieve an efficiency rate of 94%. If required, you can adjust the output voltage from 45.6V to 50.4V using an adjustable resistor.

In addition to its AC input connectors and positive and negative output screw terminals, the LOF550-20B48 is equipped with a 2-pin connector for powering a fan for optimum heat dissipation. A 4-pin input for end-of-line voltage compensation (feedback compensation) and its offset are also present. This enables the power supply's output voltage to be self-regulated according to the needs of the powered module, should the voltage delivered suffer losses in the conductors due to the distance between the power supply module and the powered module.

Finally, all necessary protections, such as overtemperature, overcurrent and overvoltage protection, are built into the module. The LOF550-20B48 power supply is an ideal choice for any DIY audiophile project requiring a powerful, high-quality power supply.

Integrated PFC module

The LOF550-20B48 switching power supply features an active PFC (Power Factor Correction) with Mosfet transistor. The PFC enables a first switching step to obtain a continuous, non-out-of-phase current at the power supply input. This has two advantages: first, the power supply's efficiency becomes optimum, with a rate of over 90%, and second, the announced power values will remain as they are, whatever the input voltage to the PFC. For example, this power supply will deliver 550W whether the input voltage is 110V or 220V.

LOF550-20B48 Module d'Alimentation à Découpage SMPS 550W 48V 11A PFC

LOF550-20B48 switched-mode power supply module connections

LOF550-20B48 Module d'Alimentation à Découpage SMPS 550W 48V 11A PFC
1VH 3.96mm AC input L(+) and N(-) 
2Ground input VAC
34-pin connector for end-of-line voltage compensation (feedback compensation)
4Adjustable resistor (45.6V-50.4V)
548V DC output -
648V DC output +
7Fan power connector (25CFM) 
LOF550-20B48 Module d'Alimentation à Découpage SMPS 550W 48V 11A PFC

Technical characteristics

Specifications
Product typeSwitching mode power supply
Input voltage90V - 260V AC or 127V - 370V DC
Operating frequency range47-63Hz
Output power550W
Outvoltage and current48V 11A (25CFM)
48V 6.7A (Air cooling) 
Output voltage adjustment45.6V - 50.4V
Efficiency94%
Maximum voltage ripple<0.5mA
Voltage stabilization accuracy±1%
Linear adjustment rate±0.5%
Load regulation rate±1%
Standby power consumption0.5W
Operating temperature-40°/+70°
General
Dimensions127 x 76 x 40.5mm
Weight490g
Package1x SMPS LOF550-20B48 switching power supply module
 
Data sheet
InputVH 3.96mm
OutputPCB Connector
OutputScrew terminals
Output voltage (V)48.0
Output current (A)11.0
Input voltage (V)240.0
Input voltage (V)150.0
Input voltage (V)120.0
Input voltage (V)100.0
Input voltage (V)115.0
Input voltage (V)125.0
Input voltage (V)200.0
Input voltage (V)90.0
Input voltage (V)220.0
Input voltage (V)260.0
Input voltage (V)250.0
Input voltage (V)230.0
Input voltage (V)110.0
Input voltage (V)190.0
Input voltage (V)130.0
Input voltage (V)210.0
Input voltage (V)180.0
Power SupplySMPS
 
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Average votes
5.0 / 5
1 reviews
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Great Amp - Extreme low noise and proper heat dissipation
I assembled this UPS for a power amplifier project using the recent 3e stereo module. The result is very satisfactory. It has enough juice to power up 2 ELAC Tower speakers and the noise floor is non-existence to my ear. I didn't hook up a fan to the setup firstly because I didn't notice a change in the output power (it is advertised 11 Amps using the fan) and secondly the large heatsink at the bottom does a great job dissipating the heat. Keeping the setup running for hours the housing is warm to touch (32 C) and the transistor heatsinks are not too hot (40-45 C). I am very happy with the result
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This review has been posted for MORNSUN LOF550-20B48 SMPS Switching Mode Power Supply Module 550W 48V 11A PFC
 
MORNSUN LOF550-20B48 SMPS Switching Mode Power Supply Module 550W 48V 11A PFC
This&nbsp;LOF550-20B48 switching-mode power&nbsp;supply module delivers&nbsp;48V and 11A&nbsp;for&nbsp;550W&nbsp;of power....

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