YF-BKT80V30A 10-75V/30A DC-DC Step up down Converter Buck Boost Converter Power Supply Board

YF-BKT80V30A 10-75V/30A DC-DC Step up down Converter Buck Boost Converter Power Supply Board

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.
- Output current adjustment range: If the input power is sufficient, and the output power supply is 20V and a 0.4Ω resistor is connected to adjust CC potentiometer, the output current can be adjusted to a maximum of 50A, but cannot be adjusted to the minimum limit value (except 0A).

Tips:
- The recommended parameters for this module are: input voltage within 75V (limit test at 85V input) and output voltage within 75V. The input and output currents should be within 32A.
- Input current is up to 40A. It is not recommended to use it for long periods of time at maximum current, especially in high boost ratio mode, to ensure good heat dissipation.
- Reverse connection of the positive and negative poles of the input and output are not allowed, otherwise the related equipment will be burned.
- Potentiometer lifespan is relatively limited, and frequent adjustment is not recommended.

Application:
- Solar panel or generator power tracking charging
- Fuel cell charging
- The regulated power supply can be adjusted to charge battery
- Applications with limited input power
- For battery to charge battery. Battery is discharged constantly and high-power LED
- A regulated power supply supplies power to devices
- Extend applications for external control voltage and current

Package Included:
- 1 x Power supply board

Note:
- Battery is not included in the package.

Typical Performance (YF-BKT80V30A):
- Non-isolated four-switch synchronous buck-boost
- Wide input DC10-75V and output DC3-75V
- Peak efficiency ≥ 98%
- Over-current protection
- Over-temperature protection self-recovery
- Remote ON/OFF
- Optional temperature-controlled fan
- Load indication
- Optional output voltage and current display
- Adjustable input voltage and current
- Adjustable output voltage and current
- The output voltage and current are externally controllable
- Input voltage tracking is suitable for battery panels
- Battery charge back-charge protection to 80V
- Low quiescent current, high regulation accuracy, constant frequency operation MEI for easy prediction
- Power can be over 1000W (input and output> 36V)
- All tests are made at 48V input voltage, resistive load, and room temperature at 25°C. Parameters are subject to change without notice

Attention:
1: Input voltage tracking is suitable for non-constant voltage input such as battery panels, fan power generation, and receiving end of wireless energy transmission.
2: Input current regulation is suitable for adapters, switching power supplies, and other applications that need to allocate or limit the maximum input current.
3: The ripple current of the boost output capacitor is large, and the ripple of the buck input capacitor is large. Thus, LC filter can be added by users.
4: It can be directly connected to battery for charging. It is recommended to adjust the output voltage correctly before connecting the target battery.
5: When the startup time of the input source is long, users need to adjust the startup time. For example, the AC adaptation output full-load voltage settling time is 50ms, while the power supply start-up time is 15ms, which may cause AC to fail to start normally.
6: It is not recommended to adjust the output current limit to less than 4A, otherwise the output voltage will be 0.2-2V lower. When it is adjusted to 0A, there will be no output.
7: 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 (>45A) to ensure that the power supply does not collapse or even be damaged. If it cannot be guaranteed, not use it with a large load or test the full function.
2: The startup time of the input source must be less than the startup time of this power supply (such as the 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. Over-voltage caused by the long wire pulse operating current should be avoided to damage the equipment or power supply.
4: If there is a diode in series with the input source to the power supply, there should be enough input voltage margin to ensure that the power supply is not damaged by the over-voltage caused by the instantaneous on-off.
5: Do not use the CC mode of an electronic load as the load of this power supply (it must be ensured that the input power is greater than the output power in any case). It is recommended to use the CR mode. CC mode draws 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 with a resistive load (dummy load) with small current to ensure real-time adjustment of the output voltage potentiometer. Otherwise, the output voltage will change slowly and the regulation will be inaccurate.
7: Do not use a mains electricity voltage regulator as input after rectification, because DC is equivalent to connecting to a power grid and it is easily damaged. Users who have to use it as a last resort must install an isolation transformer.