MPPT solar controller solar panel 5A DC-DC step-down module constant voltage and constant current charging 6-36V To 1.25-32V Step Down Charging Module

Brand-new Lido, 5A step-down constant voltage constant current module, with MPPT function, charging the battery with solar panels can increase the charging current by more than double, effectively shorten the charging time and reduce the volume of solar panels. It can charge accumulators, lithium batteries, etc., with turning light control, which is convenient to observe the charging status. It can be equipped with a multi-function voltmeter, the input voltage, output voltage, output current, output power can be displayed intuitively, and it can be used without a multimeter. Can be used as a high-power LED driver module.

   Module parameters:

    Module name: 5 A step-down constant voltage constant current MPPT  

    Module nature: non-isolated step-down module (BUCK)

    Input voltage:   6-36V

    Output voltage: 1.25-32V continuously adjustable, (default output is 5V, if you need other voltage, please explain to the shopkeeper.)

                   1.25-32V fixed output (for Pi customers) The default delivery is adjustable output

    MPPT voltage setting range: 6-36V

    Output constant current range: 0.05 -5A (default output constant current is 3A, if you need other current values, please explain to the shopkeeper)

    Output turn light range: 0.01 -5A (default turn light current is 0.3A, if you need other current values, please explain to the shopkeeper) the current range will have a little error due to the difference of parts parameters.

    Operating Temperature: - 40 ~ + 85 °

    Working frequency: 180KHz

    Conversion efficiency: 95% higher (efficiency is related to input, output voltage, current, and pressure difference)

    Short circuit protection: Yes (the current limit is the set constant current value)

    Over-temperature protection: Yes (automatically shut down the output after over-temperature)

    Input reverse connection protection: none, (if necessary, please put a diode in series in the input)

    Output anti-reverse irrigation protection: No, anti-reverse diode must be added when the output is connected to the battery, otherwise the module will be burned out! Remember! (There is a reserved anti-reverse irrigation diode position, you can add it yourself if you need it. The method is described below) You can also choose the ideal diode of our shop, which has less loss and higher utilization of solar panels. 

   Charging indicator: red light when charging, green light when fully charged. The turning lamp detection method is electric current. When the solar panel is used for power supply, the charging current during solar hours is also very small, which is lower than the current of the rotating lamp, and the green light will also be on, but it is not fully charged at this time. The charging current can be seen more directly with the charged meter head.

    Installation method: 4  3mm screws

    Wiring mode: terminal block (welding wire output when equipped with shell) IN is input, OUT is output

    Module size: length 60mm, width 31mm, height 22mm (without header)

    Note: The current detection of the module is low-end detection, please do not short-circuit the negative pole of the input and the negative pole of the output directly with a wire!

Application scope:

1. DIY a regulated power supply with constant current function, which is not afraid of short circuit during use, which can protect the load.

2. Power your electronic equipment.

3. Charge various batteries, set the charging voltage and charging current according to the batteries of different voltages and capacities, with a charging indicator function, which is convenient for observing the charging status.

4. Use solar panels to supply power to charge various batteries, with MPPT function, which can double the charging current. With constant current function, it can prevent the battery from overcharging and effectively protect the battery.

5. Drive high-power LEDs, which can be freely combined in series and parallel,

6. As a vehicle power supply, power your mobile phone or various digital products.

Method of setting voltage, current and turning light: (please see the description above)

If the module has no output voltage, please turn the MPPT setting potentiometer clockwise to have voltage output.

1. Set the output voltage: According to the float voltage value of the battery you want to charge, or the voltage value of the LED after series or parallel connection, adjust the constant voltage potentiometer (CV) to set the output voltage to the required voltage. (Without load)

2. Set the lamp current indication: After setting the output voltage, adjust the CC potentiometer counterclockwise for about 20 turns, use a multimeter to short-circuit the output at 20A current level, adjust the CC potentiometer to the current you need to turn the lamp, and then adjust the switch Adjust the light electric potentiometer until the green light just turns on.

3. Set the constant current value: After adjusting the turning lamp current, the 20A current range of the multimeter is still short-circuited output, ( the direct wire with voltage and ammeter short-circuit output can be used ) adjust the CC potentiometer to the current value you need to set. ( When the output current is set by the short-circuit method, the actual charging current will be smaller than the short-circuit setting current. It should be that the battery has a residual voltage. If you want to set an accurate charging current, please use the discharged battery to connect to the output Then set the output current.)

Note: When setting the constant current, the voltage must be higher than 1.25V, otherwise the constant current function will be invalid.

4. Set the MPPT voltage value:

    A. The method of setting with adjustable stabilized power supply: adjust the adjustable stabilized power supply to the voltage value to be set (such as 18V), and the output is not connected to the load. When the module has an output voltage, adjust the MPPT counterclockwise Set the potentiometer to the critical point where the output voltage just drops.

    B. The method of direct setting with solar panels: the input is directly connected to the solar panel, the output voltage is set according to the load, part of the light shining on the solar panel is blocked, and the output is connected to the load. The multimeter measures the output voltage of the solar panel (with a voltmeter cut to the input voltage display), and adjust the MPPT potentiometer until the solar panel voltage reaches the high-power point voltage. (The actual solar panel. The high-power point voltage will be lower than the nominal voltage. For example, for an 18V solar panel, the high-power point will be around 17.5V. )

          You can also adjust the MPPT value by measuring the output current, and connect the multimeter's current gear in series between the output and the load (with the meter head can be switched to the current display), to adjust the MPPT potentiometer to the maximum value of the output current.

     Note: When using solar panels to directly adjust the MPPT value, if the power emitted by the solar panel is greater than the load power, please block part of the light shining on the solar panel first to reduce the power of the solar panel so that the MPPT value can be adjusted.

 When the MPPT value is adjusted to the solar panel. The charging current at the high power point is 1.651A, which nearly doubles the charging current, and the effect is quite obvious.

The same charging parameters can reduce the size of the solar panel, and the same solar panel can speed up the charging speed. This effect is very useful whether it is a factory or an individual.