LT8390IFE

Series:	*
Part Status:	Obsolete

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LT8390IFE - DC DC Switching Controllers Application Field and Working Principle

The LT8390IFE is a monolithic dual-channel DC-DC controller IC that is intended to be used in a variety of high-power applications. The IC features two integrated full-bridge drivers, which can provide up to 8A peak output current and up to 1.2V. Utilizing the LT8390IFE in high-power applications can result in a compact, efficient, and reliable DC-DC conversion solution.The LT8390IFE is suitable for a variety of power supply architectures, including current mode switching, voltage mode switching and voltage ramping modes. It can be used for applications such as point-of-load power supplies, distributed power architectures, synchronous rectification and motor drives. Additionally, the IC can be used in synchronous rectification circuits, current limiting circuits, and other power management applications.

Working Principle

The LT8390IFE integrates two full-bridge drivers and a variety of protection/diagnostics circuitry. The integrated drivers can be programmed and synchronized to switch at set frequencies, sensing the inductor current with an internal current sense amplifier and providing feedback on the output voltage. The drivers\' direction of travel and current limit can also be programmed.The LT8390IFE can be configured in current mode or voltage mode operation. In current mode operation the IC regulates the output current in order to provide a reliable power supply solution. In voltage mode operation the IC regulates the output voltage by adjusting the duty cycle of the switching signal.The IC also provides fault monitoring for over-voltage, under-voltage, over-current, and reverse-current protection, as well as a diagnostic circuit that can be used to detect other power supply issues.

Applications

The LT8390IFE is suitable for a variety of power supply applications, making it a versatile choice for a range of high-power applications. Some of the possible uses include:

• Point-of-load (POL) power supplies
• Distributed power architectures
• Synchronous rectification and motor drives
• Current limiting circuits
• Power management applications

The LT8390IFE can also be used in applications where space is limited or there is a need for a compact solution. Because of its small footprint and efficient operation, the IC is well suited for applications involving mobile devices or confined spaces.

Conclusion

The LT8390IFE is a monolithic dual-channel DC-DC controller IC that is suitable for high-power applications requiring reliable and space-saving solutions. The IC can be used in a variety of power supply architectures, including current mode switching, voltage mode switching and voltage ramping modes. It integrates two full-bridge drivers and a variety of protection/diagnostics circuitry, as well as provides fault monitoring for over-voltage, under-voltage, over-current, and reverse-current protection. Due to its versatile features and small footprint, the LT8390IFE can be used in a variety of applications including point-of-load (POL) power supplies, distributed power architectures, synchronous rectification and motor drives and power management applications.

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