DC Boost Converter Step up Converter Full Set with Fan Display Input 10-48V/40A Output 12-56V

DC Boost Converter Step up Converter Full Set with Fan Display Input 10-48V/40A Output 12-56V

Read before purchasing:
- Do not use a 3A/5A regulated DC power supply as an input to test the power supply.
- Basic technical knowledge and hands-on ability are highly recommended.
- Users need to modify parameters such as undervoltage protection parameters. We can tell you how to modify it.
- Certain power supply test and measurement capabilities and equipment are recommended. Do not test this power supply with a 3A adjustable regulated power supply used in labs.
- Do not test the current-limiting power supply in CC mode of an electronic load.
- When the boost converter is not operating, the input and output are pass-through.

Typical Performance:
- Non-isolated synchronous boost converter
- Wide input DC5-48V, output DC 9-55V
- Peak efficiency> 97.0%
- Over-current protection
- Short circuit and fuse for reverse connection
- Over-temperature protection
- Optional temperature-controlled fan
- Work indicator light
- Adjustable output voltage current
- The output current is externally controllable
- Up to 50A input current
- Battery charge back-charge protection up to 60V
- Low quiescent current, high regulation accuracy, constant frequency operation MEI for easy prediction, selectable low EMI spread spectrum modulation mode
- Power can be over 800W (input > 24V)
- All tests are made at 24V input voltage, resistive load, and 25°C room temperature. Parameters are subject to change without notice

Package Included:
- 1 x Set of Boost Converter (power supply board + fan + digital display + heat sink)

Note:
- Battery is not included.

Attention:
1: For inductive or ultra-large capacitive loads, please add a large-capacity LC filter circuit.
2: Battery can be charged. It is recommended to adjust the output voltage before connecting the target battery. Charging between the same voltage level is prohibited.
3: The slow startup time and EN enable can control the delay time. When the input source start-up time is long, you need to adjust the output slow startup time. For example, the AC adaptation output full-load voltage settling time is 50ms, while the start-up time of this power supply is 2ms, which may cause AC to fail to start properly with load.
4: The boost power supply cannot completely disconnect the input and output. After the power supply stops working, VO=VIN.
5: When the output constant voltage and constant current switching is critical, there will be a deviation of 0.5-1V in the constant voltage stage. For example, if the current limit is set to 20A at no load of 29.4V, the current will be constant at 20A (-5%) when the output voltage is less than 28.7V. At 28.8-29.0V, the current may be 18-15A, which is affected by the internal resistance of the wire and the internal resistance of the battery. Constant voltage mode is subject to load regulation.
6: For different applications, some parameters may need to be adjusted.

Attention:
1: When testing this power supply, it must be ensured that the input source can provide a large enough current (>55A) to ensure that the power supply does not collapse or even be damaged when it starts at full load.
2: The input source startup time must be less than the startup time of this power supply (such as adapter as input), otherwise it may not be possible to start with load.
3: The input wire connected to this power supply shall not be too long (the internal resistance of the wire shall not be too large), otherwise the power supply may cause oscillation and abnormality.
4: If there is a diode in series with the input source to this power supply, the power supply may be damaged by the surge voltage caused by the instantaneous on-off (line BOOST effect).
5: Do not use the CC mode of an electronic load as the load of this power supply. It is recommended to use the CR mode. CC mode absorbs current, this power supply is current limited, and in constant current mode, this will cause the power supply to crash.
6: It is recommended to connect the adjustable output voltage to a resistive load (dummy load) with small current to ensure the real-time adjustment of the output voltage potentiometer. Otherwise, the output voltage will change slowly and the regulation will be inaccurate.
7: The current limit value setting should use resistor's CR mode or battery with electric quantity less than 60%. For example, if the no-load voltage is set to 29.4V and then the current limit is set to 20A, the load resistance will be 0.88Ω~1.17Ω (29.4*0.6/20A<R<29.4*0.8/20A). A 1Ω resistor is selected and the potentiometer is adjusted until the output current is 20A.



Modify undervoltage protection value:
As shown in the figure below, the undervoltage value Vin={(R1+R2) /10K+1} *1.2V. For example, the default value V={(39K+39K)/10K+1}*1.2V=10.56V, the hysteresis is about 0.5V, and the longer the input wire, the larger the input current, the greater the hysteresis. Try to stay away from the undervoltage point to avoid oscillation.