YF-BKT60V50A Power Supply Board 50A/12-60V DC Automatic Buck Boost Converter Step up down Converter

YF-BKT60V50A Power Supply Board 50A/12-60V DC Automatic Buck Boost Converter Step up down Converter

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).

Features:
- DC-DC step up down power supply with high current
- 2-way master-slave staggered parallel, good current sharing
- Adjustable voltage and current
- Can be paralleled to higher currents, with over-temperature protection
- Input and output within 30V, and 50A is supported

Typical Performance (YF-BKT60V50A):
- Non-isolated four-switch synchronous buck-boost
- Wide input DC9-58V and output DC3-56V
- Peak efficiency> 98.0%
- Over-current protection, short-circuit protection self-recovery
- Remote ON/OFF
- Over-temperature protection, optional temperature-controlled fan
- Constant current indicator light
- Output voltage and current are adjustable and externally controllable
- Input voltage tracking is suitable for fuel cells
- Optional output voltage current display
- Battery charge back-charge protection up to 60V
- Super capacitor zero voltage constant current charging
- Low quiescent current, high regulation accuracy, constant frequency operation MEI for easy prediction, selectable low EMI spread spectrum modulation mode
- Power can be over 1KW (input and output > 24V)
- All tests are made at 24V input voltage, with resistive load and 25°C room temperature. Parameters are subject to change without notice

Attention:
1. The ripple current of the boost output capacitor is large, the ripple current of the step-down input capacitor is large, and the electrolytic capacitor can be connected in parallel to reduce the heating of the capacitor and extend the life.
2. Can be directly connected to a battery to charge. It is recommended that the output voltage be properly adjusted before connecting the target battery.
3. The slow start time is the same as the EN enable control delay time, and the output slow start time needs to be adjusted when the input source start time is long. For example, the settling time of the AC adaptation output full load voltage is 50ms, and the start-up time of this power supply is 2ms, which may cause AC to fail to start normally with load. It is necessary to start the AC power supply before starting the DC power supply.
4. The input voltage regulation function cannot be limited to the case where the output current is 0, and the minimum limit output current is 2-5A, that is, a battery panel will be offset when the power is low, and it cannot be adjusted in an ultra-wide range.
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 output voltage will be lower than 28.7V, and the current will be constant 20A (-5%). At 28.8-29.0V, the current may be 18-15A. This can be affected by the internal resistance of the wire and the internal resistance of the battery. Constant voltage mode is subject to load regulation.
6. Some parameters may need to be adjusted for different applications.

Package Included:
- 1 x Power supply board

Note:
- Battery is not included in the package.

Attention:
1. When testing this power supply, it must be ensured that the input source can provide a large enough current (>65A) to ensure that the power supply does not collapse or even be damaged, especially when it starts with load.
2. The input source startup time must be less than the startup time of this power supply (e.g. using an adapter as input), otherwise it may not be possible to start with load.
3. The input wire connected to this power supply must not be too long (the internal resistance of the wire must not be too large), otherwise the power supply may oscillate and be abnormal.
4. If there are diodes in series with the input source to this power supply, the power supply may be damaged due to the surge voltage caused by the instantaneous on-off (line BOOST effect). Long wires should ensure that the input voltage is below 50V and leave sufficient margin.
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 draws current, and this power supply is current limited, and the constant current state will cause this power supply to crash.
6. It is recommended that adjustable output voltage be connected to a resistive load (dummy load) with a 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. The current limit value setting should use CR mode or a battery with electric quantity < 60%. For example, the no-load voltage is set to 29.4V, and then the current limit value is set to 20A, the load resistance is 0.88Ω~1.17Ω (29.4*0.6/20A<R<29.4*0.8/20A). A 1Ω resistor can be used and the potentiometer is adjusted until the output current is 20A.