BP5226-18

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DC-DC converters provide an effective and efficient way to convert electrical energy, from a DC source into another desired DC voltage. The BP5226-18 DC-DC Converters are designed specifically for use in applications such as motor control, medical instrumentation, robotics, telecom, and many other applications. The device provides various protection and safety features to make sure that the operation of the circuit is secure and reliable.

BP5226-18 is a high efficiency, wide input voltage (>50V), two-stage buck-boost converter. It comprises of two main devices. The primary switch, the main high-side MOSFET switch, and a secondary switch, the low-side NPN power transistor. The converter operates by bucking and boosting the voltage of the DC supply, providing a regulated output voltage that is maintained on the other stage.

The working of the converter starts with the primary stage switching, turning on the MOSFET switch and charging the output capacitors with the DC supply voltage. When the output capacitors are charged at the correct voltage, the device switches off the MOSFET switch and begins the second stage of operation. The converter then pulls the load low and connects a reverse current to the capacitor through the NPN power transistor. This discharge activity continues until the load voltage is dropped to the desired level.

The device also provides safety features such as input voltage protection, over temperature protection, over current and over voltage protection, and also active current sharing. The active current sharing feature allows several devices to be connected in parallel, which will ensure that each device draws the same current load, avoiding any overloaded device that might lead to failure.

BP5226-18 provide excellent efficiency and power capabilities, with a power rating of up to 18W, with an efficiency of up to 92%. It also offers excellent output ripple performance, with a maximum voltage ripple of less than 3% of the output voltage. The output voltage can be adjusted by external control, either via a PWM signal or an adjustable winding of the transformer. This allows the device to be used in a wide range of applications, from high power to low power.

The device is also available in a wide range of packages, including surface mount, through-hole, and package with a heat sink. This provides the user with the flexibility to select the package that best suits their application, and provides the best thermal performance.

Overall, the BP5226-18 is a flexible DC-DC converter that provides excellent performance and efficiency in a range of applications. It provides an effective solution for converting wide input voltage (>50V) sources to other regulated output voltages with little output signal ripple. The device also provides various safety features, such as input voltage protection and over current and over voltage protection, ensuring reliable operation.

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