IN+ is the input positive, IN- is the input negative
OUT+ is the output positive pole, OUT- is the output negative pole
120V is the input capacitor is 160V. 90V input capacitor is 100V
DC-DC non-isolated step-down power module high voltage input step-down board
Wide input voltage: 9V-90V
The minimum voltage difference between the input voltage and the output voltage is 4V (the input voltage is DC9V-90V when the output voltage is 5V, the input voltage is DC16V-90V when the output voltage is 12V, and the input voltage is DC30-90V when the output voltage is 24V)
Output voltage 24V/12V/5V optional
The maximum output current is 3A (that is, the constant current value is 3A, when the customized voltage is greater than 12V, the output current is less than 3A, the power is not recommended to exceed 30W, 12V and 5V can reach 3A, and 24V is 2A)
Typical operating frequency: 140KHz
High efficiency: up to 95% (the smaller the differential pressure, the higher the efficiency)
Frequency reduction at light load to improve light load efficiency
Low standby current
Built-in over temperature, over current, output short circuit protection
Built-in soft start
Constant voltage and constant current output
Operating temperature: Industrial grade (-40°C to +85°C)
Module volume: 42*30*17mm

Instructions:
1. First connect the cable between the module and the power supply, and then power on. Remember! Remember! (If the input terminal is live and wired, it is easy to spark, especially when the input power supply voltage is high, it will even burn the pads of the module).
2. After selecting a suitable power supply, use a multimeter or a voltmeter to measure whether the output voltage of the module is consistent with the voltage required by the device.
3. The electrical equipment or (load) is connected to the output end of the module.