LTC4214-2CMS#PBF

PMIC - Hot Swap Controllers: LTC4214-2CMS#PBF

The LTC4214-2CMS#PBF is a hot swap controller that provides protection for circuits and equipment that can be damaged by overcurrent. This device works with systems ranging from 10V to 28V and is particularly suitable for applications such as disk drives, DC/DC converters, and computing equipment. The LTC4214-2CMS#PBF protects against load short-circuits and typically eliminates the need for external current limiting resistors. It is an ideal solution for applications that require a tightly regulated, fault-protected output voltage.

Application Field

The LTC4214-2CMS#PBF hot swap controller is designed to help protect systems against overcurrent risks during insertion and removal of cards, boards, or USB chargers. The controller also provides protection against over-voltage and shorts. It can be used in applications ranging from data centers and cloud computing, to industrial automation and medical systems.

The LTC4214-2CMS#PBF is also suitable for applications that require a tightly regulated output voltage, such as in instrumentation systems, automotive applications, and industrial equipment. Additionally, it can act as an effective current limiter for extra protection, especially in high power systems where current spikes and short circuits are of concern.

Working Principle

The LTC4214-2CMS#PBF hot swap controller works by monitoring the current flow through the system and using an integrated circuit to sense and limit the current. It also features control logic and N-channel MOSFETs to provide additional protection. The controller is designed to operate in voltage ranges of 10V to 28V and typically requires a 3.3V logic supply for the control logic.

When the device is triggered, a protection circuit is enabled and the current flow is reduced to a predetermined level. This is done by switching off the N-channel MOSFETs and setting a limit on the current that can pass through the MOSFETs. The exact current limit can be changed depending on the input voltage range and is adjustable on a preset current limit. This preset current limit is typically set to 12A for the LTC4214-2CMS#PBF.

When the voltage exceeds the preset current limit, the controller takes action and causes the current to be limited to a safe level. The controller then switches off the N-channel MOSFETs, preventing further damage to the system. This protective circuit will remain active until the input voltage returns to a safe level and can be reset by cycling the power to the device.

Conclusion

The LTC4214-2CMS#PBF is an advanced hot swap controller that provides current protection during insertion and removal of cards, boards, or USB chargers. It is suitable for a wide range of applications, from data centers and cloud computing, to automotive and industrial systems. The controller is designed to operate in voltage ranges of 10V to 28V and requires a 3.3V logic supply for the control logic. It also features control logic and N-channel MOSFETs for additional protection, and is adjustable on a preset current limit of 12A.