DC-DC Converter DC12-95V to DC2-90V Step Down Voltage Adjustable Power Module 400W Constant Current/Voltage Power Supply Board
Features:
1. Module adopts step rectification scheme, with high efficiency, the highest efficiency is as high as 96%.
2. The output voltage and current are continuously adjustable.
3. Input voltage up to 95V, output voltage up to 90V.
4. There is input anti-reverse connection, positive and negative connection does not burn.
5. A soft start switch is available.
Specifications:
Module nature: non-isolated buck module
Input voltage :12-95V
Output voltage range :1.5-90V(only buck, not boost, output voltage can only be low to input voltage)
Input/output pressure difference :2V
Output constant current :0.3-18A(continuously adjustable)
Output rated current :15A
Output rated power :400w
Input overvoltage protection: None (no overvoltage)
Operating temperature :-10~+65 degrees
Operating frequency :120KHz
Conversion efficiency: up to 96% (efficiency is related to input, output voltage, current, pressure difference)
Short circuit protection: Yes (constant current protection)
Input reverse protection: Yes (MOS tube reverse)
Output anti-backfilling: none (to charge the battery, the output is connected to inductive load, such as the motor must add anti-backfilling diode)
Attention:
1. If the input voltage exceeds 36V, first turn the ON/OF switch to OF, connect the line and then turn the switch to ON(to prevent ignition during wiring)
2. This power supply is a step-down power supply, and the output voltage can only be lower than the input voltage
3. In the case of natural heat dissipation, the power does not exceed 400W, the current does not exceed 15A, and the power is limited. If the output voltage is high and the input and output pressure difference is large, please use the drop current
4. If the current exceeds 15A and the power exceeds 400W, add a fan to dissipate heat. The voltage and current adjustment method is as follows: (Use a multimeter or flat-head screwdriver)
Voltage regulation: Rotate the power supply board according to the required voltage. On the blue potentiometer, clockwise voltage up, counterclockwise down;
Output current adjustment: multimeter or ammeter to 20A or 10A current gear, the power supply voltage to 5V, constant current potentiometer counterclockwise about 10 turns, the current to the minimum short-circuit output with the multimeter, and then clockwise adjust the potentiometer current to the required current value; The current detection of the module is low-end. Do not short-circuit the input negative electrode and the output negative electrode directly with a wire. This will short-circuit the negative power supply and cause damage to the power supply and the electrical equipment requiring constant current.
Module for step-down power supply can only step-down can not rise, the input voltage must be higher than the output voltage.
Note:
1. Due to the light and screen difference, the item's color may be slightly different from the pictures.
2. Please allow 1-3cm differences due to manual measurement.
1x Power Supply Module