HLK-PM12 Hi-link 12V 3W AC to DC Power Supply Module

HLK-PM12 Hi-link 12V 3W AC to DC Power Supply Module is a highly compact, efficient, and reliable solution for converting high-voltage AC mains power directly into a stable 12V DC output. This module’s small footprint allows engineers and hobbyists to seamlessly integrate a regulated power source directly onto a PCB or into cramped enclosures, eliminating the need for bulky external adapters. Designed with integrated protection against overcurrent, short circuit, and over-temperature conditions, the HLK-PM12 ensures safe operation. You can confidently power microcontrollers, sensors, relays, and small embedded systems that require continuous, low-power 12V supply directly from the wall.

Key Features:

• Ultra-Compact Size: The minimized dimensions enable integration into the smallest smart devices and IoT projects.
• Wide Input Range: Accepts AC input voltage from 90 V to 264 V, making it compatible with global mains standards (120 V and 230 V).
• High Efficiency: Offers excellent power conversion efficiency, minimizing heat loss during operation.
• Integrated Protection: Built-in safeguards protect the module and your downstream electronics from short circuits, overcurrents, and over-temperature faults.
• Low Power Consumption: Maintains low power usage in standby mode, ideal for always-on devices.

Technical Specifications:

• Input Voltage Range (AC): 90 V AC to 264 V AC
• Output Voltage (DC): 12 V DC (±0.2 V)
• Rated Output Current: 250 mA
• Rated Output Power: 3 W
• Maximum Output Ripple: ≤ 100 mV
• Switching Frequency: ≈ 60 kHz
• Isolation Voltage: ≥ 3000 V AC

Mechanical Specifications:

• Mounting Type: PCB Soldering (Through-Hole Pins)
• Operating Temperature: −20°C to +60°C
• Protection: Plastic casing (Fire-resistant)

Dimensions:

• Length: ≈ 34 mm
• Width: ≈ 20 mm
• Height: ≈ 15 mm
• Weight: ≈ 10 g

Pinout and Wiring:

• AC L (Input): Connect to AC Live wire (90-264 V AC).
• AC N (Input): Connect to AC Neutral wire.
• +Vo (Output): The positive (+) 12 V DC output terminal.
• −Vo (Output): The negative (−) / Ground terminal.
• Safety Note: Always exercise extreme caution when wiring the AC input side of the module.

Datasheet Reference:

• Download HLK-PM Series Power Module Datasheet

Commonly Used in:

• Smart Home Devices: Powering sensors, light controllers, and monitoring hubs installed in wall boxes.
• Industrial Control Systems: Providing isolated 12 V power for PLC interfaces and small display units.
• Embedded Prototyping: Creating compact, self-contained power solutions for development boards.

Applications:

• Direct PCB Power Supply: Integrating 12 V DC power directly onto a main circuit board design.
• Low-Power LED Lighting: Driving small clusters of high-brightness 12 V LEDs.
• IoT Gateway Devices: Supplying continuous power to microcontrollers, Ethernet modules, and ZigBee radios.

Equivalent Models:

• HLK-PM01 (5V Output): A similar module offering a 5 V DC output for microcontroller direct power.
• Mornsun AC/DC Converters: Higher quality or higher power modules from competing industrial brands.
• LDO Regulators: Simpler, cheaper, but inefficient solutions that require a pre-regulated external power source.

Package Includes:

• 1 x HLK-PM12 Hi-link 12V 3W AC to DC Power Supply Module