LTC4306IUFD#TRPBF

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The LTC4306IUFD#TRPBF is an integrated high-efficiency active ORing controller. It is used in a variety of power supply systems in parallel to implement redundant power supply protection. In this article, we will discuss the application field and working principle of the LTC4306IUFD#TRPBF.

Application Field

The LTC4306IUFD#TRPBF is designed for ORing applications, specifically when multiple power supplies are used in parallel for redundancy and protection. The device is commonly found in backup power systems, communication systems, and other applications where high reliability is required. The device is capable of handling high currents, thanks to its integrated ORing and active power switch, which can handle up to 4A with efficiencies above 90%. It also features a range of advanced protection features that guard against short circuits, overcurrents, and reversed voltages.

The device also has an integrated input voltage detector that can detect inputs over a range of 0.8V to 20V. This allows the device to be used in a variety of applications, spanning a range of input voltages.

Working Principle

The working principle of the LTC4306IUFD#TRPBF can be broken down into two main stages: the ORing section and the active power switch section. The ORing section consists of two sets of dual MOSFETs and two integrated current shunts. When two power supplies are applied in parallel, this section creates a closed loop that distributes power between the supplies, ensuring that power is drawn from the supply with the greater voltage. The active power switch section controls the voltage level at which the parallel operation begins. This allows the device to operate both with equal and unequal inputs, and maintain a constant output voltage even if the input voltage fluctuates.

The device has a variety of safety features that guard against overcurrents, short circuits and reversed voltages. In the event of a short circuit, the device will switch off both power supplies and force the open-drain output to ground. The device also has an integrated thermal protection circuit that will shut down the device if the internal temperature exceeds a preset threshold. This ensures that the device’s components remain safe and operational.

Conclusion

The LTC4306IUFD#TRPBF is an integrated high-efficiency active ORing controller that is used in a variety of power supply systems in parallel to implement redundant power supply protection. The device is capable of handling high currents, thanks to its integrated ORing and active power switch, and it has an integrated input voltage detector for applications with varying input voltages. The device’s working principle consists of an ORing section and an active power switch section, and it has a range of safety features to guard against short circuits, overcurrents and reversed voltages.

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