LM5067MM-2/NOPB

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Texas Instruments’ LM5067MM-2/NOPB is part of the broad portfolio of Hot Swap Controllers developed by the company. LM5067MM-2/NOPB is an integrated dual-channel circuit that enables user flexibility to set up hot swap protection with no external components in case of an overcurrent fault occurring on each port. The purpose of this controller is to provide pulsed current limit protection and allow system nodes to be powered from multiple power sources. Hot Swap Controllers essentially act as a power-on reset device for users to manage their needs for reliable and safe operation for low-voltage systems.

Features and Benefits of LM5067MM-2/NOPB

The Hot Swap Controllers support the following features:

• A programmable Current-Limit Slope (CLS) feature that allows user control over the rate of current rise
• An enable pin to reduce power consumption and enable multiple boards in parallel applications
• Live insertion capability to eliminate the need for system shut down during board installation
• Pulse-by-pulse current limit protection for minimum board damage
• Built-in Thermal Shutdown for additional over temperature protection
• High operating voltage range from 3V to 44V and low RDSon switch

The controller\'s unique capabilities benefit users who are trying to reduce board space, provide reliable system and board protection, and improve system uptime. In hot swap applications, the LM5067MM-2/NOPB controller helps optimize system power delivery to prevent any kind of overcurrent fault from impacting the system’s performance. The controller is capable of handling varied fault scenarios while ensuring a safe and secure system.

Working Principle of LM5067MM-2/NOPB

The LM5067MM-2/NOPB works by controlling the gate drive of an external N-Channel MOSFET, which is co-installed on the board. This external MOSFET acts as a load switch and prevents any short circuit and overcurrent faults on the board while allowing system nodes to be powered. When the current rises beyond predefined safety limits, the LM5067MM-2/NOPB control circuit switches the external MOSFET off, limiting the current to safe levels.

The controller also offers an embedded thermal shutdown circuit which is triggered when the temperature of the external MOSFET reaches an extreme level. This embedded circuit helps to prevent any faults related to over temperature conditions and helps to maintain a safe operating temperature.

Application Field and Benefits for LM5067MM-2/NOPB

The key application field of the LM5067MM-2/NOPB are in systems and nodes where reliable, safe and power-efficient operation is important. The Hot Swap Controllers can be used in PC peripherals, industrial equipment, and appliances. The hot swap controllers have the potential to significantly reduce board space and improve system uptime thanks to the features mentioned in the previous section. The controllers also ensure system level protection by providing robust current limit protection against any overcurrent or short-circuit fault conditions.

The Hot Swap Controllers are also important in designing advanced applications such as cloud computing. In such applications, the safety of the system must be ensured to prevent data leakage and any other system faults. The LM5067MM-2/NOPB can easily protect system nodes from any overcurrent and over-temperature threats and thus ensure system-level safety.

Conclusion

The LM5067MM-2/NOPB is Texas Instruments’ Hot Swap Controller which offers a unique range of features for system designers. The controller provides pulsed current limit protection and allows system nodes to be powered from multiple power sources. The controller has embedded thermal shutdown for additional over temperature protection and can be used for applications such as PC peripherals, industrial equipment and appliances. The controller can also be used to protect nodes in cloud computing platforms to ensure reliable, safe and power-efficient operation.

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