1. Úvod
The HI-Link HLK-2M03 is a compact, high-efficiency AC-DC power supply module designed for various electronic applications. It converts a universal input voltage (90-245Vac) to a stable 3.3Vdc output with a maximum current of 600mA. This module features low power consumption, high reliability, and robust protection mechanisms, making it suitable for smart home devices, automation control, communication equipment, and instrumentation.

Obrázek 1: Přední strana view of the HLK-2M03 Power Supply Module, showing input and output pins.
2. Klíčové vlastnosti
- Ultra-compact and small form factor.
- Univerzální vstup objtage range: 90 ~ 245Vac.
- Low power consumption with no-load loss less than 0.1W.
- Low ripple and noise output.
- Integrated output short circuit and overcurrent protection with automatic recovery.
- Vysoká účinnost a hustota výkonu.
- Input and output isolation withstand voltage: 3000 Vac.
- 100% full load aging and testing for reliability.
- Long operational life, exceeding 100,000 hours of continuous working time.
- Environmentally sealed with waterproof and thermally conductive adhesive potting, meeting IP65 standard for moisture and vibration resistance.
- Operates without requiring external circuitry.
3. Technické specifikace
| Parametr | Hodnota |
|---|---|
| Vstupní objemtage Dosah | 90~245Vac |
| Výstupní objemtage | 3.3 V DC |
| Výstupní proud | 600 mA (max.) |
| Výstupní výkon | 2W |
| Ztráta bez zatížení | < 0.1 W |
| Izolace svtage | 3000Vac (Input to Output) |
| Provozní teplota | -25°C až +60°C |
| Skladovací teplota | -40°C až +80°C |
| Relativní vlhkost | 5–95 % |
| Způsob chlazení | Přirozené chlazení |
| Atmosférický tlak | 80–106 kPa |
| Nadmořská výška | < 2000 mil |
| Vibration Coefficient | 10 ~ 500Hz, 2G10min./1cycle, 60min.each along X, Y, Z axes |
| Ochrana | Output Short Circuit, Output Overcurrent (110-150% of max load) |
| Rozměry (D x Š x V) | Approx. 30mm x 19mm x 16.5mm (Refer to Figure 2) |
| Certifikace | CE, UL |

Figure 2: HLK-2M03 Power Supply Module with approximate dimensions (30mm x 19mm x 16.5mm).
4. Nastavení a instalace
The HLK-2M03 module is designed for PCB mounting and requires careful wiring. Ensure all power is disconnected before proceeding with installation.
Konfigurace 4.1 pinů
Refer to the module markings for correct pin identification:
- AC (2x): Input terminals for AC power (90-245Vac). These pins are interchangeable for live and neutral connections.
- -Vo: Negative output terminal (0V).
- +Vo: Positive output terminal (+3.3Vdc).

Obrázek 3: Nahoře view of the HLK-2M03 module, indicating AC input and -Vo/+Vo output pins.
4.2 kroky instalace
- Odpojení napájení: Ensure the main power supply is completely disconnected before handling the module.
- Montáž: Solder the module securely onto a printed circuit board (PCB) using the designated pin holes. Ensure proper alignment and mechanical stability.
- Vstupní zapojení: Connect the AC input lines (Live and Neutral) to the two "AC" pins on the module. Observe local electrical codes and safety standards.
- Výstupní zapojení: Connect the load requiring 3.3Vdc to the "+Vo" (positive) and "-Vo" (negative) output pins. Ensure correct polarity.
- Ověření: Double-check all connections for correctness and security to prevent short circuits or improper operation.
Varování: Incorrect wiring can lead to damage to the module, connected devices, or pose an electrical hazard. If you are unsure, consult a qualified electrician or electronics technician.
5. Provoz
Once the HLK-2M03 module is correctly installed and wired, apply the specified AC input voltage (90-245Vac). The module will automatically convert this to a stable 3.3Vdc output. The module is designed for continuous operation within its specified environmental conditions and load limits.
- Ensure the connected load does not exceed the maximum output current of 600mA to prevent overcurrent protection activation or module damage.
- The module operates with natural cooling; ensure adequate airflow around the module if it is enclosed to prevent excessive heat buildup, especially under full load.
6. Údržba
The HLK-2M03 power supply module is designed for long-term, maintenance-free operation. However, adhering to the following guidelines can help ensure its longevity:
- Podmínky prostředí: Operate the module within the specified temperature and humidity ranges. Avoid exposure to extreme conditions, direct sunlight, or corrosive environments.
- Čistota: Keep the module free from dust and debris. If cleaning is necessary, use a soft, dry brush or compressed air. Do not use liquid cleaners.
- Fyzická kontrola: Periodically inspect the module and its connections for any signs of physical damage, loose wiring, or discoloration.
- Větrání: Ensure that any enclosure housing the module provides sufficient ventilation for natural cooling.
No user-serviceable parts are inside the module. Do not attempt to open or repair the module, as this will void any warranty and may pose a safety risk.
7. Řešení problémů
If you encounter issues with your HLK-2M03 module, refer to the following common troubleshooting steps:
| Problém | Možná příčina | Řešení |
|---|---|---|
| Žádný výstupní objemtage |
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| Výstupní objemtage is unstable or low |
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| Module repeatedly shuts down or restarts |
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8. Bezpečnostní informace
Please read and understand all safety instructions before installing or operating the HLK-2M03 module. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Elektrické nebezpečí: This module operates with high AC voltages. Always disconnect power before making any connections or performing maintenance.
- Kvalifikovaný personál: Installation and wiring should only be performed by qualified personnel familiar with electrical safety standards.
- Izolace: The module provides input-to-output isolation. Do not bypass this isolation.
- Prostředí: Do not expose the module to water, moisture, or flammable materials. Ensure it is installed in a well-ventilated area.
- Ochrana proti přetížení: Do not exceed the specified output current (600mA). Overloading can cause damage or fire.
- Správné uzemnění: Ensure the system incorporating this module is properly grounded according to local electrical codes.
9. Záruka a podpora
9.1 Záruka
The manufacturer provides a warranty for this product. Specific warranty terms and duration (e.g., "1" year as indicated in specifications) are typically provided at the point of purchase or by the seller. Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by improper installation, misuse, unauthorized modifications, or operation outside of specified parameters.
9.2 Technická podpora
For technical assistance or inquiries not covered in this manual, please contact your product supplier or the manufacturer, HI-Link, through their official support channels. Provide your product model number (HLK-2M03) and a detailed description of the issue when seeking support.