PMIC - Hot Swap Controllers

With the rapid development of the industrial products and the increasingly high requirements for the performance of the products, the application of hot swap controller is particularly important in the embedded application. The LTC4244CGN-1#PBF is an innovative hot swap Controller that provides precision protection for power supplies in systems such as servers, storage systems and embedded applications.

Application Field

The LTC4244CGN-1#PBF hot swap controller provides a reliable power source to embedded applications by managing the power supply transition through power supplies. It provides the ability to increase the total power supply capacity while keeping the system current within the safe operating limits. This hot swap controller also enables a smooth power up sequence to ensure that the additional power is correctly supplied to the load. By limiting the inrush current and temperature rise when the power is turned on, it helps to prevent damage to the components in the system.

The other main application of the LTC4244CGN-1#PBF hot swap controller is to provide over-temperature protection. The device sets an adjustable thermal warning threshold to actively monitor the temperature at the system level. When the temperature exceeds the preset value,the device is able to shut off the output voltage to ensure the safety of components and the system.

Furthermore, the LTC4244CGN-1#PBF hot swap controller provides fault protection and signaling. With its adjustable current limit, it provides protection against over-current conditions in the system due to transient faults or component failure. The device can also detect an overvoltage or undervoltage condition and will act to prevent component damage. Additionally, it has excellent transient immunity of up to 5kV.

The LTC4244CGN-1#PBF hot swap controller is available with a wide range of features that enable it to provide reliable power supply to high-end embedded systems. It is small and efficient, perfect for those applications with limited space. Its small form factor and low power consumption make it ideal for low cost design.

Working Principle

The LTC4244CGN-1#PBF hot swap controller is designed to provide precision control of the power supply while protecting the system from overcurrent and overvoltage faults. The device contains two voltage regulation blocks, a current regulation block, a thermal sensor and an adjustable undervoltage and overvoltage lockout (UVLO/OVLO) block. It also contains two adjustable voltage and current sensing blocks that can be used to sense the voltage and current of the system.

The current regulation block is used to measure and control the system current, as well as to provide support for current monitoring and fault detection. When a fault such as an overcurrent or overvoltage condition is detected, the device is able to respond quickly and provide protection for the system. The adjustable UVLO/OVLO block allows for the setting of the minimum voltage needed to initiate turn on of the system and the maximum voltage which, if exceeded, will trigger system power down.

The thermal sensor monitors the system temperature by comparing it to a preset threshold. When the temperature reaches the preset limits, the device shuts down the output voltage. The adjustable voltage and current sensing blocks can sense the voltage and current of the system and allow the device to provide overvoltage and overcurrent protection.These features allow the LTC4244CGN-1#PBF to provide excellent protection for systems with multiple power supplies, ensuring stable power supply and reliable system performance.

The LTC4244CGN-1#PBF is an innovative and efficient hot swap Controller that can provide reliable power to embedded systems and protect the system from transient faults and component failure. Its adjustable UVLO/OVLO block, thermal sensor, and current and voltage sensing blocks allow it to provide excellent protection for the power supplies. Its small form factor and low power consumption make it ideal for low cost designs and its wide range of features make it perfect for powering high-end systems.