LT8705 250W 20A Automatic Buck-Boost Voltage Regulator Solar CC-CV Synchronous Rectification Voltage Rise and Fall Module MPPT Features: 1. Using high quality materials, quality assurance 2. With more than 60V high input voltage value, can withstand 80V pulse voltage 3. High output current: the output current can reach 15A for a long time, the maximum current is 20A 4. Input and output current adjustable: input current adjustable for constant current source, output current adjustable especially for high current charging of batteries, and high current charging of LiFePO4 batteries, basically covering all batteries 5. With input and output voltage adjustment function: input voltage adjustment is suitable for tracking the maximum power point voltage of solar panels, to a certain extent, to achieve the role of the maximum power point tracking Specifications: Module model: 250 automatic voltage lift module Power control: current mode control Input voltage: 6v-80V input Input current adjustable: adjustable range 0.5-15A Input voltage adjustable: 9-60V this function is suitable for MPPT solar panel use Output voltage adjustment: 1.3-80V Output current adjustment: 0.5-15A (strongly recommended to use within 15A, relatively stable point, the waveform will not jitter) Instructions for Use: Potentiometer adjustment: (input and output current adjustment by the chip control principle of the adjustment process is not linear) output 2 potentiometer adjustment mode are clockwise adjustment value increases. 1. Input voltage adjustment potentiometer: assume that the need to set the minimum input voltage of 20V, the adjustment method for the input terminal connected to the 2OV power supply, clockwise adjustment of the potentiometer until the module stops output. This is the 20V undervoltage shutdown value. If the input is a constant current source, and the load is large, the module will reduce the input current to maintain the input voltage of 20V. 2. Output voltage adjustment potentiometer: clockwise adjustment of the output voltage becomes larger, counterclockwise becomes smaller. 3. Output current adjustment potentiometer: Adjustment method for the multimeter and a large load in series with the positive and negative poles of the output (or directly short-circuit the output with a multimeter, this practice is not recommended, the accuracy will be offset) counterclockwise adjustment potentiometer, until the multimeter current value is reduced to the desired value. (The prerequisite for adjustment is that the input power is not limited or the value of the limit is greater than the output power at the time of adjustment, otherwise the input power is limited and the correct output value is not obtained) Using the modules own ammeter adjustment method to ensure that the output voltage is above 5V, the output is connected to a large load greater than the required current value, counterclockwise adjustment of the potentiometer until the display value is the desired value. (The reason is that the output current detection function needs to ensure that the output voltage is above 3V, after short-circuiting the output voltage is less than 3V can not display the output current value). Package Included: Module X1