ISL28025FI60Z-T

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The ISL28025FI60Z-T is a Power Supply Controllers, Monitors with a range of application fields and working principles.

The ISL28025FI60Z-T is a single-phase synchronous buck controller specifically designed to drive two transistors or two integrated power FETs (MOSFETs). It provides maximum efficiency and power density to meet demanding requirements in applications such as automotive, industrial and medical equipment. The controller features an integrated low-dropout linear regulator (LDO) to generate a low-noise reference voltage to power a downstream regulator in the design. The controller utilizes a unique voltage mode control architecture that ensures a fast transient response, precise line and load regulation, and excellent cross-regulation capability.

The ISL28025FI60Z-T operates up to a maximum input voltage of 60V and output current of 25 A. It also offers programmable switching frequency to facilitate optimization for system efficiency and cost purposes. It ensures greater reliability through the built-in inrush current control (ICC) to precisely limit the inrush current as well as accurate thermal protection by using internal temperature sensing. Additional features include an "on-the-fly" frequency reducing to reduce switching frequency during light load conditions while maintaining an optimal duty cycle to ensure a stable output voltage. The controller also provides an input voltage undervoltage lockout (UVLO) to prevent operation over the selected range. The wide VIN to VOUT conversion range provides a large headroom to generate high output voltage accuracy at any load condition.

The robustness of the ISL28025FI60Z-T is further enhanced by the internal undervoltage protection (OVP) feature. This feature monitors the output voltage and trips the controller switch if the output voltage is over the accurate threshold. This on-die overvoltage protection keeps the system safe from voltage surges or damage caused by noisy loads.

The ISL28025FI60Z-T is also equipped with a unique built-in adaptive body diode (ABD) control logic to reduce power dissipation during light load conditions. It prevents unnecessary reverse recovery losses in the body diode of the downstream power MOSFETs. Furthermore, the controller simplifies system design by providing an adjustable soft-start time that allows for accurate power system sequencing and improved start-up characteristics.

The highly integrated ISL28025FI60Z-T allows customers to meet their system design requirements efficiently and with fewer components. Its features make it ideal for use in input/output power supplies, point-of-load (POL) applications, automotive systems, medical equipment and other high power density applications.

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