PD81101EVB-MBB

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The PD81101EVB-MBB is a versatile and powerful development and evaluation tool for examining the applications and characteristics of AC/DC and DC/DC power supplies. The board contains several components allowing testing of AC/DC and DC/DC power solutions from 400W designs to energy-efficient 5W switchers. Among its features are an adjustable primary circuit, four independent outputs, and isolated feedback for each output, allowing designers to test various solutions for their applications.

The board is based on the PD81101, an integrated power supply controller from Power Integrations, designed for mains- powered inverter applications up to 400W. It is capable of driving dual N-channel power MOSFETs for efficiency optimization along with providing protection and safety features such as over-temperature, over-voltage, and over-current detection.

The heart of the PD81101EVB-MBB evaluation board is a high-performance gate drive circuit, which drives a pair of low-RDS(ON), high-voltage N-channel DMOS FETs, allowing it to work with primary voltages up to 500V. The board also incorporates a linear regulator design, using a special low-voltage MOSFET, allowing high-power and low-voltage outputs. The board can supply up to five separate output voltages with buck, boost or inverting converters, and can be used for testing a range of single and multiple outputs for different applications.

The PD81101EVB-MBB board works in three distinct operating modes to provide the various current requirements from the application. In continuous current-mode (CCM), the output current is regulated within a predetermined limit; whereas in discontinuous current-mode (DCM), the output current is limited to a certain level and is automatically switched off when it drops below the controllable level. In open-loop current-mode (OLCM), the output current is regulated within a predetermined range, making it suitable for applications with wide variations in load or in transient conditions.

The board also incorporates safety features such as over-temperature, over-voltage, and over-current protection. The board can be connected to the mains via its safety-compliant input and output connectors, and the entire system is protected by double-sided soldering shields. The board can also be used with an external oscilloscope for troubleshooting and system level monitoring.

The PD81101EVB-MBB board is an excellent tool for designers looking to evaluate the performance and characteristics of AC/DC and DC/DC power solutions. Its adjustable primary circuit, four independent outputs, and isolated feedback for each output, enable designers to incrementally test and evaluate several different solutions for their application, making it an ideal evaluation and development tool.

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