Product Overview

The LM75-23BxxR2S Series represents MORNSUN's second-generation ultra-compact industrial standard metal enclosure power supplies, offering a comprehensive upgrade in volume, performance, manufacturing, and structure. This series features a universal input voltage range, dual AC/DC input capability, excellent cost-effectiveness, low power consumption, high efficiency, superior reliability, and reinforced safety isolation. The product is safe, dependable, and boasts outstanding EMC performance.

Product Models: LM75-23B05R2S, LM75-23B09R2S, LM75-23B12R2S, LM75-23B15R2S, LM75-23B24R2S, LM75-23B36R2S, LM75-23B48R2S

Key Features

• Universal Input Range: 80 - 305VAC / 100 - 430VDC (Dual-use AC/DC input on the same terminals).
• High Efficiency: Up to 91.5% typical (at 230VAC).
• Wide Operating Temperature: -40°C to +85°C.
• High Isolation: 4000VAC input-output isolation (for 1 minute).
• Low Standby Power Consumption: <0.5W (at 230VAC).
• Low Ripple & Noise.
• Comprehensive Protections: Short-circuit protection (Hiccup mode, self-recovery), over-current protection (120% - 150% Io, Hiccup, self-recovery), over-voltage protection (Clamping, self-recovery).
• High-Altitude Operation: Suitable for applications up to 5000 meters.
• Safety Compliance: Meets EN62477 Overvoltage Category III requirements.
• High Reliability & Warranty: MTBF ≥ 300,000 hours (MIL-HDBK-217F @25°C), backed by a 3-year warranty.

Applications

Industrial controls, street light control, security systems, telecommunications, smart home applications, and more.

Safety & EMC Compliance

• Safety Standards: Complies with GB4943.1, BS EN/EN62368-1, UL/IEC62368-1, IS13252 (Part 1), BS EN/EN60335-1, BS EN/EN61558-1, EN62477-1. Safety Class I.
• EMC Standards:
  • EMI: Conducted and Radiated Disturbance meets CISPR32/EN55032 Class B.
  • EMS: Complies with IEC/EN61000-4 series, including ESD (Contact ±6kV/Air ±8kV), Radiated Immunity (10V/m), EFT/Burst (±4kV), Surge (Line-Line ±2kV/Line-PE ±4kV), etc., Performance Criterion A.

Model Selection & Output Parameters

All models are available in a standard version and enhanced versions: LM75-23BxxR2S-Q (with conformal coating) and LM75-23BxxR2S-QG (with double-sided conformal coating). Various kits are available. Please download the file "PIA-031" for details.

Detailed Model Specifications:

• LM75-23B05R2S: Output Power 75W, Rated Output 5V/15A, Output Voltage Adjustment Range 4.75-6.75V, Typical Efficiency 89.0% (230VAC), Max. Capacitive Load at Room Temp 25000µF.
• LM75-23B09R2S: Output Power 76.5W, Rated Output 9V/8.5A, Output Voltage Adjustment Range 8.55-10.35V, Typical Efficiency 90.0%.
• LM75-23B12R2S: Output Power 78W, Rated Output 12V/6.5A, Output Voltage Adjustment Range 11.4-14.4V, Typical Efficiency 90.5%.
• LM75-23B15R2S: Output Power 78W, Rated Output 15V/5.2A, Output Voltage Adjustment Range 14.25-17.25V, Typical Efficiency 91.0%.
• LM75-23B24R2S: Output Power 79.2W, Rated Output 24V/3.3A, Output Voltage Adjustment Range 22.8-28.8V, Typical Efficiency 91.5%.
• LM75-23B36R2S: Output Power 79.2W, Rated Output 36V/2.2A, Output Voltage Adjustment Range 34.2-41.4V, Typical Efficiency 91.5%.
• LM75-23B48R2S: Output Power 81.6W, Rated Output 48V/1.7A, Output Voltage Adjustment Range 43.2-52.8V, Typical Efficiency 92.0%.

Detailed Electrical Specifications

Input Characteristics:

• Input Voltage Range: 80-305VAC; 100-430VDC.
• Input Frequency: 47-63 Hz.
• Input Current (Max.): 1.5A @ 115VAC; 1.2A @ 230VAC.
• Inrush Current (Max.): 50x @ 115VAC; 80x @ 230VAC.
• Leakage Current: <1.5mA @ 277VAC.
• Hot-Swap: Not supported.

Output Characteristics:

• Output Voltage Accuracy: ±2% for 5V model; ±1% for all other models (over full load range).
• Line Regulation: ±0.5% (at rated load).
• Load Regulation: ±1% for 5V model; ±0.5% for all other models (0%-100% load).
• Output Ripple & Noise (Peak-to-Peak, 20MHz BW):
  • 5V, 9V, 12V, 15V models: Typ. 100mV, Max. 150mV.
  • 24V model: Typ. 120mV, Max. 150mV.
  • 36V, 48V models: Typ. 120mV, Max. 240mV.
• Temperature Coefficient: ±0.03%/°C.
• Minimum Load: 0%.
• Standby Power: <0.5W @ 230VAC.
• Hold-up Time: Typ. 15ms @ 115VAC; Typ. 60ms @ 230VAC.

General Characteristics:

• Isolation Resistance: ≥100MΩ (tested at 500VDC).
• Operating & Storage Temp/Humidity: -40°C to +85°C; 20% to 90% RH (operating, non-condensing), up to 95% RH (storage).
• Switching Frequency: Typ. 90kHz.
• Output Power Derating:
  • Temperature Derating: 5%/°C from -40°C to -30°C; 2.5%/°C from +50°C to +70°C; 1.33%/°C from +70°C to +85°C.
  • Input Voltage Derating: Additional 2%/VAC derating required for input voltages between 80-100VAC.

Physical & Mechanical Characteristics

• Enclosure Material: Metal (AL5052, SGCC).
• Dimensions: 129.00 x 97.00 x 40.00 mm (L x W x H).
• Weight: Typ. 350g.
• Cooling Method: Natural convection cooling. Suitable for naturally ventilated environments. For use in enclosed environments, please consult technical support.
• Output Voltage Adjustment: Adjustable via the onboard ADJ potentiometer (clockwise to increase).
• Installation: For end-use applications, the enclosure must be connected to the system ground.

Important Notes

1. All specifications are measured at 25°C ambient temperature, <75% RH humidity, rated input voltage, and rated output load, unless otherwise stated.
2. Derating is required for high-altitude applications: above 2000m, the temperature derating rate is 5°C/1000m.
3. Additional input voltage derating is required when operating in the 80-100VAC/100-140VDC input range.
4. To improve conversion efficiency, some audible noise may be present during high-voltage operation, which does not affect product performance or reliability.
5. The ripple and noise measurement method is the contact method with a parallel 47µF electrolytic and 0.1µF ceramic capacitor at the output. Refer to the "Metal Enclosure Switching Power Supply Application Guide" for details.
6. The power supply should be considered a system component. Final equipment EMC testing must be performed in the specific application. For EMC test guidance, consult technical support.
7. Customized product adaptations are possible. Please contact us for specific requirements.

Contact Email: Vic@feisman.cn