800W 30A High Power DC-DC Step Down Module Buck Module CV CC Adjustable 12V 24V 36V 48V

800W 30A High Power DC-DC Step Down Module Buck Module CV CC Adjustable 12V 24V 36V 48V

Features:
- The module adopts high-performance original electronic components, and the overall performance is more stable
- DC20-70V input and DC2.5-58V output; Output high current and high power
- Input with low-voltage protection (Turns off output when input voltage is below 20V)
- Constant voltage and constant current output, and continuously adjustable voltage and current
- There is an output current test point, and the value of the output current setting can be tested by the multimeter MV gear
- With external voltage and current analog signal input ends, and the voltage and current can be controlled and adjusted by MCU
- With external output switch signal terminal
- MOSFET of the input end enables anti-reverse connection, and the positive and negative poles of the board will not be burned when the input termination is reversely connected
- Intelligent temperature control fan: when the module temperature reaches 55°C, the fan will start to work; and it will stop working when it is 50°C

Application:
1. This module can be used to input high-voltage batteries and charge low-voltage batteries
2. It can be used in various occasions that require high voltage drop to low voltage and high current.
3. Solar buck charging.
4. DIY a step-down DC adjustable module, which can be replaced with external adjustable module (voltage 100K current 1K) for easy use. External adjustable module must be the one using quality multi-turn wires. A poorly qualified coil can damage the module. External cable should not exceed 15cm/5.9"

Product Parameters:
- Item name: 800W 30A adjustable step-down module
- Power protection: Input low-voltage protection (Turn off output when input voltage is below 20V)
- Input voltage: DC20-70V
- Output voltage: DC2.5-58V
- Input current: 20A Max.
- Output current: 30A Max.
- Output power: 800W Max.
- Standby current: ≤ 70mA (input 24V and output 12V) [depending on voltage]
- Output ripple: 120mV input 24V, output 12V/20A
- Conversion efficiency: 0.92-0.96
- Circuit structure: not isolated
- Operating temperature: -20 to 50°C
- Module size: 154 x 75 x 69mm/6.1 x 3 x 2.7" (LxWxH)
- Product net weight: about 550g/1.2lb

Package Included:
- 1 x Power Supply Module

Attention:
1. The input end and the output end cannot be reversely connected, and the positive and negative poles of the output end cannot be reversely connected or short-circuited.
2. The input peak voltage cannot exceed 78V, otherwise the module may be damaged.
3. Output constant voltage and constant current are continuously adjustable. When adjusting the potentiometer counterclockwise, the value will be higher, and when rotating the potentiometer clockwise, the value will be smaller. The current is adjustable only when it is equal to or above 1A.
4. When the input voltage of this module is lower than 30V and the output is lower than 12V, the output can be short-circuited without damaging the module. The output current can be debugged with an ammeter to short-circuit output (short-circuited at low voltage).
5. When adjusting the output current, users can adjust the current while measuring the reference voltage of the output current with the mV gear of a multimeter. 1A output current per 2mV. Adjust the reference voltage according to your required current.
6. Diodes D9 and D10 can be changed to two LED diodes which can be used as constant voltage and constant current working status indicators (can only be changed to the original position of the board, but can not be led out with wires). Note: corresponding knowledge is highly recommended.
7. When the voltage and current are adjusted by external analog signals, the external voltage signal is 0-5V. Pay attention to the positive and negative poles when accessing. Note: a separate power supply is required to supply power to the external signal, and the ground wire of the module cannot be shared, otherwise the module will be damaged.
8. When you need an external analog signal to adjust, please remove two resistors. When voltage adjustment is required, remove R38 (the second resistor behind the voltage signal port). When you need to regulate the current, remove R46 (the second resistor behind the current signal port). At this point, the adjustable voltage and current become adjustable for the correction of voltage and current, respectively. If adjustable correction is not required, the adjustable can be replaced with the corresponding fixed resistor.
9. This module is not suitable for loads with motor and large starting current.
10. The maximum output power of this module is 800W, and the maximum output current can reach 30A when the output voltage is less than 26V. When the output voltage is higher than 26V, the output current decreases accordingly. This data is for reference only, and the specific use environment and conditions shall prevail.
11. The MOSFET of this module is anti-reverse connection and current detection is at the negative terminal (ground). In the case that the output requires constant current and current limiting, the negative poles of the input and output cannot be shared and short-circuited, and must be separated.
12. When using, please add heat dissipation accessories to the module according to different environments and loads.
13. Description of input and output voltage difference:
A: Input 70V and maximum output 58V.
B: Input 60V and maximum output 49V.
c: Input 50V and maximum output 40V.
D: Input 40V and maximum output 32V.
E: Input 30V and maximum output 24V.
F: Input 20V and maximum output 16V.

Precautions:
1. When the input and the output voltage exceeds 36V, please use with caution to prevent electric shock.
2. When the temperature of this module exceeds 65°C, please add heat dissipation accessories in time.
3. Please prevent moisture and dust when using.