1. Introdução
This manual provides detailed instructions for the safe and efficient use of your DROK DC-DC Buck Converter. This module is designed to step down a higher DC input voltage para um volume de saída CC mais baixo e ajustáveltage, featuring an LCD display for real-time monitoring of voltage, corrente e potência.
2. Recursos do Produto
- Volume de entrada amplotage Faixa: CC 6.5V a 36V.
- Volume de saída ajustáveltage: DC 1.2V to 32V. Factory default output is 5V.
- Corrente de saída elevada: Stable operation at 3.5A for extended periods, capable of reaching 4.5A with adequate heat dissipation. Adjustable current limit is approximately 4.2A-4.5A.
- Tela LCD: Mostra volume de entradatage, volume de saídatage, corrente de saída e potência de saída.
- Alta resolução de exibição: Volumetage resolution of 0.05V, current resolution of 0.005A.
- Precisão de exibição: Volumetage display accuracy of ±0.1V, current display accuracy of ±0.05A.
- Controle de botão: Easy adjustment of output voltage and control of output ON/OFF state without a screwdriver.
- Input Reverse Connection Protection: Protects the module from damage due to incorrect input polarity.
- C protetorasing: Includes a transparent acrylic case to prevent physical damage to the module.
3. Precauções de segurança
- Garanta o volume de entrada corretotage polarity. The module has input reverse connection protection, but always verify connections.
- Há no reverse current protection on the output terminals. Do not connect a battery or other power source to the output without an external diode to prevent reverse current flow, as this can damage the module.
- Do not short-circuit the Input IN- terminal to the Output OUT- terminal. This will disable the constant current function.
- Ensure proper ventilation, especially when operating at higher currents (above 3.5A) to allow for adequate heat dissipation.
- Always verify the output voltage setting before connecting any load to prevent damage to your devices.
- Handle the module with care, especially during assembly of the acrylic case, to avoid damage to components.
4. Especificações
| Parâmetro | Valor |
|---|---|
| Vol de entradatage Alcance | CC 6.5 V - 36 V |
| Volume de saídatage Alcance | DC 1.2V - 32V (Ajustável) |
| Output Current (Stable) | 3.5A |
| Output Current (Max with Heat Dissipation) | 4.5A |
| Potência de saída | 75 W |
| Volumetage Resolução da tela | 0.05V |
| Resolução de exibição atual | 0.005A |
| Volumetage Precisão de exibição | ±0.1 V |
| Precisão de exibição atual | ± 0.05A |
| Dimensões | 14.7 x 8 x 5.2 cm |
| Peso | 70 g |
5. Configuração
5.1 Identificação do Componente
Familiarize yourself with the components of the buck converter module:
Figure 1: Component layout of the DROK buck converter. Labels indicate input/output terminals, LCD display, control buttons, and the voltage potenciômetro de ajuste.
5.2 Acrylic Case Assembly
The module comes with a transparent acrylic case for protection. Assembly is straightforward:
- Identify the top and bottom acrylic plates, standoffs, and screws.
- Carefully align the bottom acrylic plate with the mounting holes on the PCB.
- Insert the brass standoffs through the bottom plate and into the PCB.
- Place the top acrylic plate over the standoffs, ensuring all cutouts align with the module's components (terminals, buttons, screen).
- Secure the top plate with the remaining screws. Do not overtighten.
Figure 2: Disassembled module with acrylic case components.
Figure 3: Assembled module with protective case.
5.3 Conexões de Fiação
Connect your power source and load to the module using the screw terminals:
- Input (IN+ / IN-): Connect your DC power source (6.5V-36V) to these terminals. Ensure correct polarity: IN+ for positive, IN- for negative.
- Output (OUT+ / OUT-): Connect your load to these terminals. Ensure correct polarity: OUT+ for positive, OUT- for negative.
Note: Always double-check wiring before applying power.
6. Instruções de operação
6.1 Ligar/Desligar
- After connecting the input power, the LCD will light up.
- Pressione o LIGADO/DESLIGADO button (usually on the left side) to toggle the output power.
- To set the default power-on state (output ON or OFF), press and hold the LIGADO/DESLIGADO button. The module will remember this setting for subsequent power cycles.
6.2 Ajustando o Volume de Saídatage
O volume de saídatage is adjusted using the two buttons on the right side of the module:
- Pressione o '+' button to increase the output voltage.
- Pressione o '-' button to decrease the output voltage.
- The LCD will display the current output voltage during adjustment.
6.3 LCD Display Modes
The module features an LCD that can display various parameters. Use the button on the left (often labeled 'IN/OUT' or similar) to cycle through display modes:
- Volume de saídatage (OUT V): Displays the current output voltage.
- Vol de entradatage (IN V): Displays the current input voltage.
- Vol de entrada / saídatage (IN/OUT V): Alternates between input and output voltage exibição.
- Output Current (OUT A): Displays the current flowing through the output.
- Output Power (OUT W): Displays the calculated output power.
Figura 4: Volume de Saídatage display
Figura 5: Volume de entradatage display
Figure 6: Input/Output Voltage display
Figure 7: USB Output Voltage Display (if applicable)
6.4 Constant Current (CC) Adjustment
The module supports constant current output. The current limit can be adjusted using the small potentiometer (ADJ-I) on the board. Turn clockwise to increase the current limit. This is typically set to approximately 4.2A-4.5A at the factory.
7. Manutenção
- Mantenha o módulo limpo e livre de poeira e detritos. Use um pano macio e seco para a limpeza.
- Ensure adequate airflow around the module, especially when operating at higher loads, to prevent overheating.
- Regularly check wiring connections for tightness and signs of wear or corrosion.
- Evite expor o módulo à umidade, temperaturas extremas ou ambientes corrosivos.
8. Solução De Problemas
| Problema | Possível causa | Solução |
|---|---|---|
| Sem exibição/Sem saída | No input power; Incorrect input polarity; Output turned off. | Check input power connections; Verify input polarity; Press the ON/OFF button to enable output. |
| Volume de saídatage não pode ser ajustado | Potentiometer at its limit; Faulty potentiometer. | Ensure the adjustment buttons are being pressed correctly; If still unresponsive, contact support. |
| Constant current function not working | Input IN- short-circuited to Output OUT-. | Check wiring to ensure IN- and OUT- are not connected. |
| Superaquecimento do módulo | Excessive load current; Insufficient ventilation. | Reduce load current; Ensure adequate airflow around the module; Consider adding a fan for continuous high-current operation. |
9. Vídeos de Produtos
Watch these official videos for additional guidance on using your DROK Buck Converter:
Video 1: Demonstration of the buck converter's features and operation.
Video 2: Detailed guide on setting up and adjusting the output voltage.
Video 3: Short overview of the module's display functions.
Video 4: Comprehensive tutorial on advanced usage and applications.
10. Garantia e Suporte
For warranty information or technical support, please refer to the product packaging or contact your retailer. Keep your purchase receipt for warranty claims.
