HLK-40M24 AC-DC Isolation Voltage Stabilized switching Power Supply Module 220V to 24V40W gallium nitride GaN power module
HLK-40M24 AC-DC Isolation Voltage Stabilized switching Power Supply Module 220V to 24V40W gallium nitride GaN power module
HLK-40M24 AC-DC Isolation Voltage Stabilized switching Power Supply Module 220V to 24V40W gallium nitride GaN power module
The HLK-40M24 is a compact AC-DC isolated power supply module that converts 220V AC input to stabilized 24V DC output with 40W continuous power capacity, utilizing advanced gallium nitride semiconductor technology for superior efficiency and thermal performance. Industrial automation engineers, IoT device manufacturers, and embedded systems developers rely on this module to power control circuits, sensors, and communication modules with exceptional reliability and minimal heat dissipation. This product solves critical power delivery challenges in harsh industrial environments by providing galvanic isolation, voltage regulation within 5% tolerance, and protection against input voltage fluctuations ranging from 176V to 264V AC.
Product Overview
The HLK-40M24 operates on the principle of switched-mode power supply topology combined with high-frequency transformer isolation, delivering regulated 24V DC output from standard Indian mains supply. The integration of gallium nitride transistors enables switching frequencies above 100kHz, resulting in dramatically reduced transformer size and weight compared to traditional silicon-based designs. The module incorporates active power factor correction and multiple protection circuits including over-voltage protection, over-current limiting, and thermal shutdown mechanisms that automatically deactivate the output if junction temperature exceeds 110 degrees Celsius.
What distinguishes the HLK-40M24 from conventional power supplies is its exceptional power density achieved through GaN technology, delivering 40W output in a footprint smaller than 90x55x30mm. The isolated design provides 3000V RMS isolation between input and output, making it ideal for applications requiring high noise immunity and safety compliance with industrial standards. Built-in EMI filtering ensures conducted emissions remain well below EN 55015 Class B limits, while the universal input voltage range accommodates both 50Hz and 60Hz AC supplies without modification.
Key Specifications
| Specification | Details |
| Product Type | AC-DC Isolated Switching Power Supply Module |
| Brand | HLK (Huanyang) |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Input Voltage | 176-264V AC, 50/60Hz |
| Output Voltage | 24V DC regulated |
| Output Power | 40W continuous |
| Isolation Voltage | 3000V RMS |
| Voltage Regulation | ±5% at rated load |
| Efficiency | Above 85% at full load |
| Output Ripple | Less than 100mV peak-to-peak |
| Protection Features | Over-voltage, over-current, thermal shutdown |
| Operating Temperature | -20 to +70 degrees Celsius |
| Dimensions | 90 x 55 x 30mm |
| Weight | Approximately 120 grams |
Key Features
- Gallium Nitride GaN Technology: Delivers 40W power in ultra-compact form factor with switching efficiency exceeding 85%, reducing cooling requirements and enabling fanless operation
- High Isolation Voltage: 3000V RMS galvanic isolation between input and output eliminates common-mode noise and ensures safety in multi-tier industrial systems
- Wide Input Range: Accepts 176-264V AC input accommodating Indian mains voltage fluctuations and enabling use across different geographic regions without reconfiguration
- Precision Voltage Regulation: Maintains output voltage within ±5% tolerance across temperature range and load variations, suitable for sensitive analog and digital circuits
- Multiple Protection Circuits: Integrated over-voltage protection, over-current limiting, and thermal shutdown prevent damage to connected equipment during fault conditions
- Low EMI Emissions: Built-in filtering ensures compliance with EN 55015 Class B standards, minimizing interference with nearby communication and control systems
- Compact Mounting: DIN rail compatible design with standard screw terminals enables quick installation in control cabinets and industrial enclosures
Applications and Use Cases
- Industrial PLC and Automation Systems: Powers 24V DC input modules in programmable logic controllers, remote terminal units, and distributed control systems operating on 220V AC mains
- IoT Gateway Devices: Provides isolated power for industrial IoT gateways, wireless sensor nodes, and edge computing devices requiring reliable 24V DC supply in electrically noisy factory environments
- LED Lighting Control: Supplies regulated 24V DC to LED driver modules and dimming circuits in industrial and commercial lighting installations with high-frequency switching compatibility
- Security and Surveillance Systems: Powers access control systems, CCTV camera power supplies, and alarm modules requiring galvanic isolation from main power distribution
- Instrumentation and Measurement: Delivers stable 24V DC to precision analog instruments, data acquisition modules, and sensor conditioning circuits with minimal noise
- Telecommunications Equipment: Provides isolated power for telecom power supplies, VoIP systems, and network equipment requiring strict voltage regulation and EMI immunity
How to Use
Installation of the HLK-40M24 requires connecting the AC input terminals to 220V mains supply through a circuit breaker rated for at least 2A. Ensure proper polarity by connecting the neutral and live wires to their designated terminals marked on the module housing. The output terminals provide 24V positive and negative, which should be connected to your load circuit with appropriate gauge wiring sized for the current draw. For loads exceeding 1.5A, use minimum 1.5mm square copper conductors to minimize voltage drop and ensure stable operation.
Before energizing, verify that all terminal connections are tight and no exposed conductors are visible. The module should be mounted in a location with adequate ventilation, though the GaN design generates minimal heat. If mounting in an enclosed cabinet, maintain at least 5cm clearance around the module for natural convection cooling. Once powered on, the module automatically regulates output voltage and enters protection mode if temperature exceeds 110 degrees Celsius or load current exceeds safe limits. For troubleshooting, measure output voltage with a multimeter first; if no output appears, check input AC supply availability and circuit breaker status before contacting technical support.
Frequently Asked Questions
What does 3000V RMS isolation mean and why is it important for my application?
Galvanic isolation of 3000V RMS means the input and output circuits are electrically separated by a high-voltage barrier, preventing ground loops and common-mode noise from coupling between circuits. This is critical in industrial environments where multiple power sources and signal cables run in close proximity, causing noise that corrupts sensor readings and control signals. The isolation also provides personnel safety by preventing dangerous voltages from appearing on the 24V output side if an input fault occurs.
Can I use the HLK-40M24 with 50Hz and 60Hz supplies interchangeably?
Yes, the HLK-40M24 is designed for universal frequency operation and automatically adapts to both 50Hz and 60Hz AC supplies without any jumper settings or reconfiguration. The switching frequency of the internal converter is independent of input frequency, so the output voltage and regulation characteristics remain identical regardless of whether you operate it in India on 50Hz or in 60Hz regions.
What is the maximum continuous load current I can draw from this 40W module?
At 24V output, the maximum continuous current is approximately 1.67A (40W divided by 24V). However, it is recommended to limit continuous operation to 1.5A to provide thermal margin and ensure longevity. If your application requires peak currents up to 2A for short durations, the module will handle this through its over-current limiting circuit, which reduces output voltage rather than shutting down completely, protecting both the module and your connected equipment.
Is the HLK-40M24 suitable for outdoor or damp industrial environments?
The module has a standard industrial temperature rating of -20 to +70 degrees Celsius and can operate in moderately humid conditions. However, for outdoor or high-humidity applications, we recommend installing it inside a sealed control cabinet or using a conformal coating to protect against moisture ingress. The module itself does not have IP rating protection, so direct exposure to water spray or condensation should be avoided.
How do I know if the module is operating correctly after installation?
Measure the output voltage using a digital multimeter set to DC voltage mode. It should read between 22.8V and 25.2V (±5% of 24V nominal). If you measure significantly lower voltage or zero output, check that the input AC supply is present using an AC voltmeter. The module has no LED indicator, so voltage measurement is the primary verification method. If output voltage is unstable or fluctuates more than 1V under steady load, contact technical support as this may indicate a failing unit.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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Buy HLK-40M24 AC-DC Isolation Voltage Stabilized switching Power Supply Module 220V to 24V40W gallium nit
Buy HLK-40M24 AC-DC Isolation Voltage Stabilized switching Power Supply Module 220V to 24V40W gallium nitride GaN power module Online in India
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