AN44070A-EVB-0

The AN44070A-EVB-0 is a single-phase, single-stage Bridgeless PFC (Power Factor Correction) evaluation board which simulates the performance of the AC/DC ACpC (Advanced Constant Power Control) Buck-Boost PFC controller IC (Integrated Circuit) and allows user to develop and test power converters with PFC devices. This board contains a Bridgeless PFC stage, a step-down DC-DC converter stage, and a compact AC/DC back-to-back control board. The components on the board are organized in a convenient layout for easy assembly and testing. All components are surface-mounted on the board to provide a single-phase solution for bridgeless PFC applications.

Application Field

The AN44070A-EVB-0 is designed for use in a variety of AC/DC applications, including power supplies, automotive inverters, USB chargers, and home energy management systems. It is also suitable for LED lighting applications. The highly integrated components of the board enable users to quickly develop efficient bridgeless PFC power converters.

Working Principle

The AN44070A-EVB-0 uses the principles of Buck-Boost ACPCC (Advanced Constant Power Control) to optimize the performance of the power converter. The ACPCC concept combines the principles of voltage mode and current mode controllers to provide superior performance and improved reliability. The ACPCC controller performs all control functions to ensure a constant output power, regardless of input or output conditions. The user can configure the AC/DC back-to-back control board by setting the gate drive voltage or current. All control functions, such as overvoltage protection, undervoltage protection, overcurrent protection, overload protection, and power factor correction, are handled through the ACPCC controller.

The components on the board are organized in a convenient layout for easy assembly and testing. All components on the board are surface-mounted to provide a single-phase solution for bridgeless PFC applications. The board also contains the components necessary for the digital control of the power regulator. This includes the AC/DC ACpC controller IC, transistor, resistor, inductor, capacitor, operational amplifier, and bleeder resistor.

The AN44070A-EVB-0 includes several test points that enable users to measure the performance of their power converter. The test points provide the user with an easy way to measure the input and output voltage, current, voltage ripple, efficiency of the AC/DC power converter, and other important parameters. The test points also enable the user to check the accuracy of their power converter calculations.

Conclusion

The AN44070A-EVB-0 is a single-phase, single-stage Bridgeless PFC evaluation board designed for use in a variety of AC/DC applications. The highly integrated components on the board allow users to quickly develop efficient and reliable power converters. The board also contains the components necessary for the digital control of the power regulator and includes several test points to measure the performance of their power converter. The AN44070A-EVB-0 provides a cost-effective solution for users to develop and test their Bridgeless PFC applications.