LI10-20BxxPU Series 10W AC/DC Industrial Board-Mount Switching Power Supply

Product Overview

The LI10-20BxxPU Series is MORNSUN's new generation of ultra-compact, low-profile industrial AC/DC switching power supply modules designed for board-level mounting. Featuring a plastic flame-retardant (UL94V-0) enclosure, this series delivers high performance and reliability in a minimal footprint. It offers a universal input voltage range, dual AC/DC input capability, high efficiency, low standby power consumption, and comprehensive safety protections, making it an ideal power solution for space-constrained applications.

Product Models: LI10-20B03PU, LI10-20B05PU, LI10-20B09PU, LI10-20B12PU, LI10-20B15PU, LI10-20B24PU

Key Features

• Ultra-Low Profile & Compact Size: Measuring only 63.5mm x 45.7mm x 22.5mm (L x W x H), it is designed for applications with strict height limitations.

• Universal Input Range: 80 - 305VAC / 100 - 430VDC. Accepts both AC and DC input on the same terminals.

• High Efficiency: Up to 85.0% typical efficiency, minimizing energy loss and heat generation.

• Wide Operating Temperature Range: -40°C to +85°C.

• High Isolation Voltage: 3000VAC input-to-output isolation (for 1 minute).

• Very Low Standby Power Consumption: <0.3W at 230VAC input.

• Low Output Ripple & Noise.

• Comprehensive Protection: Includes short-circuit (Hiccup mode, self-recovery), over-current (Constant current limit, self-recovery), and over-voltage (Clamping, self-recovery) protection.

• High-Altitude Operation: Suitable for use up to 5000 meters.

• Safety Compliance: Conforms to EN62477 Overvoltage Category III requirements.

• Flame-Retardant Enclosure: Plastic case compliant with UL94V-0 standard.

Applications

Intelligent instrumentation, smart home devices, surveillance and security systems, IoT (Internet of Things) modules, industrial control systems, and other compact electronic equipment requiring reliable, isolated power.

Safety & EMC Compliance

• Safety Standards: Complies with GB4943.1, BS EN/EN62368-1, and UL/IEC62368-1. Safety Class I.

• EMC Standards:

  • EMI: Conducted and Radiated Emissions meet CISPR32/EN55032 Class B limits.

  • EMS: Robust immunity conforms to IEC/EN61000-4 series standards, including ESD (Contact ±4kV / Air ±8kV), Radiated RF Immunity (10V/m), Electrical Fast Transient/Burst (±2kV), Surge (Line to Protective Earth ±2kV), among others. Performance Criterion A.

Model Selection & Output Parameters

This series includes models with single output voltages of 3.3V, 5V, 9V, 12V, 15V, and 24V. The output voltage is fixed. The pinout is consistent across all models.

Detailed Model Specifications:

• LI10-20B03PU: Output Power 9.9W. Rated Output 3.3V / 3.0A. Typical Efficiency 80.0% (at 230VAC).

• LI10-20B05PU: Output Power 10W. Rated Output 5V / 2.0A. Typical Efficiency 83.0% (at 230VAC).

• LI10-20B09PU: Output Power 10W. Rated Output 9V / 1.2A. Typical Efficiency 84.5% (at 230VAC).

• LI10-20B12PU: Output Power 10W. Rated Output 12V / 0.84A. Typical Efficiency 85.0% (at 230VAC).

• LI10-20B15PU: Output Power 10W. Rated Output 15V / 0.67A. Typical Efficiency 85.0% (at 230VAC).

• LI10-20B24PU: Output Power 10W. Rated Output 24V / 0.42A. Typical Efficiency 84.5% (at 230VAC).

Detailed Electrical Specifications

Input Characteristics:

• Input Voltage Range: 80 – 305VAC; 100 – 430VDC.

• Input Frequency Range: 47 – 63 Hz.

• Input Current (Maximum): 0.25A at 115VAC; 0.15A at 230VAC.

• Inrush Current (Maximum): 20A (peak) at 115VAC cold start; 40A (peak) at 230VAC cold start.

• Leakage Current: <0.25mA at 230VAC.

• Efficiency: Refer to model-specific typical values measured at 230VAC, full load.

Output Characteristics:

• Output Voltage Accuracy: ±2.0% (including line, load, and temperature effects).

• Line Regulation: ±1.0%.

• Load Regulation: ±2.0% (from 10% to 100% load).

• Output Ripple & Noise (Peak-to-Peak, 20MHz bandwidth): 80mV maximum.

• Temperature Coefficient: ±0.03%/°C.

• Minimum Load: 10% of rated load is required for stable operation.

• Standby Power: Less than 0.3W at 230VAC input, no load.

• Hold-up Time: Typically 16ms at 115VAC; typically 30ms at 230VAC.

General Characteristics:

• Isolation Resistance: ≥100 MΩ (tested at 500VDC between input, output, and case).

• Operating & Storage Temperature Range: -40°C to +85°C.

• Operating & Storage Humidity Range: 20% to 90% relative humidity (non-condensing).

• Switching Frequency: Typically 80 kHz.

• Output Power Derating: Required for operation above +70°C up to the maximum of +85°C.

• Cooling Method: Natural convection (fanless).

Physical & Mechanical Characteristics

• Enclosure Material: Flame-retardant plastic (UL94V-0).

• Dimensions (L x W x H): 63.50mm x 45.70mm x 22.50mm.

• Weight: Approximately 45 grams (typical).

• Mounting: Printed Circuit Board (PCB) mount via through-hole pins.

• Pin Assignment:

  • Pin 1: AC Line (L) / DC Input Positive (+)

  • Pin 2: AC Neutral (N) / DC Input Negative (-)

  • Pin 3: Earth Ground / Frame Ground (FG)

  • Pin 4: DC Output Positive (+Vout)

  • Pin 5: DC Output Negative (-Vout / Common)

Important Notes

1. All specifications are measured at an ambient temperature of 25°C, 230VAC input, and rated output load, unless otherwise stated.

2. Power derating is required for applications above 2000 meters altitude.

3. A minimum load of 10% is necessary for stable startup and operation.

4. The Frame Ground (FG, Pin 3) must be securely connected to the system's earth ground for optimal EMI performance and safety.

5. This power module is a component designed for installation on a PCB within an end-user's equipment. Final system-level EMC and safety compliance must be verified in the complete end application.

6. Do not operate the module in conductive or heavily contaminated environments without appropriate protective measures.

7. The "P" pin (Case Ground) should be connected to the system's protective earth (PE).

Contact Email for Inquiries: Vic@feisman.cn