1. Introduktion
The DORHEA MT3608 DC-DC Step Up Boost Power Converter is a compact and efficient module designed to convert a lower DC input voltage into a higher, adjustable DC output voltage. Utilizing the MT3608 chip, this module offers high conversion efficiency and includes essential protection features, making it suitable for various electronic projects and applications requiring a boosted power supply.
2. Specifikationer
| Feature | Specifikation |
|---|---|
| Input bindtage | 2V - 24V DC |
| Udgang Voltage | 5V - 28V DC (Justerbar) |
| Maksimal udgangsstrøm | 2A (1.2A continuous; 1A or more requires additional heat dissipation) |
| Konverteringseffektivitet | Op til 93 % |
| Kontrolchip | MT3608 |
| Beskyttelsesfunktioner | Under-voltage lockout, current limiting, thermal overload protection |
| Monteringstype | PCB-montering |
| Dimensioner | Ca. 32.77 x 17.78 mm |
| Vægt | Approx. 1.76 Ounces (50g) |
3. Opsætning
Before connecting the module, ensure all power sources are disconnected. Observe proper polarity to prevent damage to the module and connected devices.
3.1. Identifying Terminals
- VIN+Positiv indgangsvolumentage terminal.
- VIN-Negativ indgangsvolumentage terminal (Ground).
- VOUT+Positiv udgangsvolumentage terminal.
- VOUT-Negativ udgangsvolumentage terminal (Ground).
Figur 1: Øverst view of the MT3608 module, highlighting input and output terminals.
Figur 2: Vinklet view of the MT3608 module.
3.2. Initial Potentiometer Adjustment
Before applying power or connecting a load, it is crucial to perform an initial adjustment of the potentiometer. This step helps ensure the module is in a state where voltage adjustment is possible, as some modules may ship with the potentiometer set to a position that prevents immediate voltage regulering.
- Ensure the module is ikke drevet og no load is connected.
- Locate the blue potentiometer on the module. Use a small screwdriver to turn the potentiometer's screw.
- Turn the potentiometer mod uret for at least 20 full turns until you hear a "ta" sound, indicating it has reached its limit. This typically sets the output to its lowest possible value, often close to the input voltage.
- After reaching the counter-clockwise limit, turn the potentiometer med uret for approximately 30 full turns. This action prepares the module for voltage boosting.
- Now, the module is ready for connection and fine-tuning.
4. Betjeningsvejledning
4.1. Connecting Power and Load
- Connect your DC input power source (2V-24V) to the VIN+ og VIN- terminals, observing correct polarity.
- Connect your load to the VOUT+ og VOUT- terminals. It is recommended to connect a multimeter to the output terminals to monitor the voltage during adjustment.
4.2. Justering af output voltage
With the input power applied and a multimeter connected to the output:
- Slowly turn the potentiometer med uret at øge output voltage.
- Slowly turn the potentiometer mod uret to decrease the output voltage.
- Adjust until the desired output voltage (between 5V and 28V) is achieved.
Note: The potentiometer can be sensitive. Make small adjustments and allow the multimeter reading to stabilize before further turning. If the output voltage does not change, repeat the initial potentiometer adjustment procedure (Section 3.2).
Figure 3: Module size reference.
4.3. Current Limits and Heat Dissipation
The module can deliver up to 2A peak current, with a continuous rating of 1.2A. If your application requires more than 1A of continuous current, it is advisable to implement additional heat dissipation measures, such as a small heatsink, to prevent overheating and ensure stable operation.
5. Vedligeholdelse
The MT3608 module is a robust electronic component that requires minimal maintenance. Follow these guidelines for optimal longevity:
- Hold modulet rent og fri for støv og snavs.
- Sørg for, at alle elektriske forbindelser er sikre og fri for korrosion.
- Undgå at udsætte modulet for overdreven fugtighed eller ekstreme temperaturer.
- Regularly inspect for any signs of physical damage or component discoloration, which may indicate overheating or malfunction.
6. Fejlfinding
- No Output Voltage eller Output Voltage Equals Input Voltage: This is a common issue. Refer to the "Initial Potentiometer Adjustment" section (3.2) and ensure you have turned the potentiometer sufficiently in both directions to engage the voltage reguleringskredsløb.
- Module Gets Hot: If the module becomes excessively hot during operation, it may be drawing too much current for its passive cooling capabilities. Verify your load's current draw and consider adding a heatsink if it exceeds 1A continuously. Ensure the input voltage er inden for det angivne område.
- Unstable Output Voltage: Check for loose connections. Ensure the input power supply is stable and capable of providing the necessary current. If using a high current load, ensure adequate heat dissipation.
- Modulfejl: If the module fails to operate after verifying connections and adjustments, check for correct input/output polarity and ensure that the maximum voltage and current ratings were not exceeded.
7. Sikkerhedsoplysninger
- Afbryd altid strømmen, før du foretager eller ændrer tilslutninger.
- Overskrid ikke den specificerede indgangsvolumentage (24V DC) or output voltage (28V DC) limits.
- Do not exceed the maximum output current of 2A (1.2A continuous) without proper heat dissipation.
- Handle electronic components with care to avoid electrostatic discharge.
- Keep the module away from water, flammable materials, and direct sunlight.
- This module is intended for experienced users familiar with electronics. Improper use can lead to damage or injury.
8. Garanti og support
Specific warranty information for the DORHEA MT3608 DC-DC Step Up Boost Power Converter is not provided in the product data. For any support inquiries, technical assistance, or warranty claims, please contact the manufacturer, DORHEA, directly through their official channels or the retailer from whom the product was purchased.