ISL61852BCRZ-T

The ISL61852BCRZ-T is a Hot Swap Controller IC (PMIC) used to protect and manage the power of any board. The device can turn on and off external MOSFETs connected to a supply rail which is used to feed loads. It ensures inrush current is limited during power up, while providing constant output voltage to a wide range of loads. Additionally, it provides an adjustable over-voltage and over-current protection.

The functionality and features of the ISL61852BCRZ-T make it suitable for a range of applications. These include distributed power systems in data centers, telecoms, servers, and hot swappable cards for routers. It is also used in embedded systems such as industrial automation and medical equipment. This versatile IC is suitable for intermediate bus voltages from 0 to 48V and can support up to 6A peak load current.

Features of the ISL61852BCRZ-T PMIC - Hot Swap Controller

• Supports up to 6A peak load current.
• On/off logic control of an external driver MOSFET.
• Up to 40V working voltage.
• External adjustable sense resistor.
• Under-voltage and over-voltage lockout.
• Programmable soft start.
• Over-temperature protection.
• Therm-foldback control.
• On-chip power management.

Working Principle of the ISL61852BCRZ-T PMIC - Hot Swap Controller

The ISL61852BCRZ-T is designed to monitor the output supply voltage and detect fault conditions. It also turns on and off external MOSFETs connected to a supply rail which is used to feed loads. When the voltage exceeds a preset threshold, the internal timer attaches the MOSFETs to the supply line with a pre-defined time delay, allowing the voltage to be brought up gradually and ensuring the inrush current is limited. This eliminates the possibility of overloading the power supply lines during power up.

The device also provides adjustable over-voltage and over-current protection, allowing the user to set preset thresholds to avoid beneficial components being damaged as a result of unexpected events. Similarly, the device provides overtemperature protection, ensuring components are protected when core temperatures exceed a certain threshold. The device also includes thermal foldback control, which reduces the load current and power dissipation when the device temperature reaches high levels.

Conclusion

The ISL61852BCRZ-T PMIC - Hot Swap Controller offers an ideal solution for power management in a wide range of applications, from distributed power systems in data centers to embedded industrial automation and medical equipment. It provides efficient control of output voltage and offer adjustable over-voltage and over-current protection. It also has a range of additional features that provide enhanced security and protection, including overtemperature protection and therm-foldback control.