Description

 

YF-BKT95V30A DC Automatic Step up down Converter Buck Boost Converter Adjustable 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 with 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).

Typical Performance (YF-BKT95V30A):
- Non-isolated four-switch synchronous buck-boost
- Wide input DC12-95V, output DC1-95V
- Efficiency> 97% (up to 99% in pass-through mode)
- Over-current protection, short-circuit protection self-recovery
- Remote ON/OFF
- Over-temperature protection
- Temperature-controlled fan
- Constant current indication, optional voltage and current ammeter
- Input voltage is adjustable to suit battery panels and fuel cells
- Output voltage and current are adjustable
- Output voltage and current externally controllable (delay 20ms)
- Optional range-adjustable pass-through mode
- Battery charge back-charge protection to 95V
- Low quiescent current, fast dynamic response, constant frequency operation MEI for easy prediction
- Power is over 1200W (input and output > 48V)
- All tests are carried out at 48V input voltage, with resistive load, and room temperature at 25°C

 

Attention:
1. At high output voltage (80V) and current, the maximum voltage regulation is -3%. If there are high requirements, continuous mode can be used within -1%.
2. The pass-through mode is to set a allowable input and output pass-through voltage range. When the input voltage is lower than the range, it will work as a boost module. When the input voltage is higher than the range, it will work as a buck module.
3. The boost output capacitor has a large ripple, and the buck input capacitor has a large ripple, which can reduce heat generation and extend life and can be connected to more electrolytic capacitors.
4. In intermittent working mode by default, the module can be directly connected to your battery to charge, otherwise it is recommended to add an ideal diode to the output.
5. The start-up time needs to be adjusted when the input source start-up time is long. For example, the AC adaptation output full-load voltage settling time is 50ms, and the power start-up time of this power supply is 15ms, which may cause abnormal operation.
6. Some parameters may be adjusted for different applications.

Package Included:
- 1 x Power Supply Board

Note:
- Battery is not included.

Attention:
- When testing this power supply, it must be ensured that the input source can provide a large enough current (>35A) to ensure that the power supply does not collapse or even be damaged.
- The input source startup time must be less than the startup time of this power supply (for example, adapter as input), otherwise it may not be possible to start with load.
- The input wire connected to this power supply from the input source must not be too long (the internal resistance of the wire must not be too large), otherwise the power supply cannot work with load and may even be damaged.
- If there are diodes in series with the input source to this power supply, there should be sufficient input voltage margin to ensure that the power supply is not damaged by over-voltage caused by instantaneous turn-off.
- 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 draws current, this power supply is limited, and the constant current state will cause this power supply to crash.
- To adjust the output voltage, a small current resistance load (dummy load) must be connected to ensure real-time regulation of the potentiometer. Otherwise, the output voltage will change slowly, which can lead to inaccurate regulation.
- Attention must be paid to electrostatic EDS, hot-swap surge, and as much voltage margin as possible.