TPS23753EVM-004

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TPS23753EVM-004 is an evaluation module for Texas Instruments TPS23753, a very efficient synchronous MOSFET buck-boost controller. It can be used to build custom dual-output non-isolated AC/DC power supplies and DC/DC converters. It is a high-performance, cost-effective solution for applications that require extremely high efficiency, motor drive isolation and stringent safety requirements.

The evaluation module features an onboard controller and two-phase buck-boost synchronous limited FETs converters that can be used to output either two DC voltages or a single AC voltage. It also has features such as adjustable switching frequency, integrated slew-rate control, programmable current limiting, and over-current protection. It can be used for a wide range of applications, such as lighting, portable power and automotive.

The controller of the TPS23753EVM-004 uses a DirectFETTM architecture for improved gate driver performance and reliability. It can be used for a wide range of input and output voltages, from 3V to 45V. It supports dual-output configurations, allowing it to be used for multi-channel power conversions. The controller can provide a wide range of output currents, from 10mA to 2A. The TPS23753EVM-004 also has a built-in over-temperature protection to prevent thermal runaway in the application.

The working principle of the TPS23753EVM-004 is based on a synchronous buck-boost topology, where an optimal combination of high frequency switching and synchronous rectification is used. The control circuit of the controller converts either a single or a dual AC input voltage into a DC voltage. This DC voltage is then inverted to an AC voltage and delivered to the output. The controller adapts the AC voltage output to the required voltage range and can be programmed to provide a wide range of output voltages. Additionally, the controller includes a system of sensors, drivers and switches to regulate the output voltage and current.

The system uses two FETs connected in parallel as the main switching elements of the regulated power supply. The controllable gate voltage of the FETs is generated by the controller\'s integrated MOSFET internal bootstrap circuit. The current sensing circuit in the controller monitors the load current and adjusts the gate voltage of the FETs to maintain the regulated output voltage. When the load current reaches the current limit, the gate voltage is reduced to turn off the FETs, thus protecting the system.

In short, the TXS23753EVM-004 is a cost-effective and high-performance evaluation module designed to be used as a platform for building custom power converters. The two-phase buck-boost synchronous limited FETs converter can be used to provide two regulated DC outputs or a single AC voltage output. The controller includes a wide range of features such as adjustable switching frequency, integrated slew-rate control, programmable current limiting and over-current protection that makes it an ideal solution for applications that require high efficiency, motor drive isolation and stringent safety requirements.

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