ISL6141IBZA-T

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PMIC - Hot Swap Controllers Overview

Hot swap controllers are used to safely connect and disconnect loads and power sources using a switching circuit. This prevents spikes, over voltages, and ensures controlled power. Hot swap controllers provide monitoring and control features to protect sensitive current and voltage sources from various over-current faults. Hot swap controllers form an important component of any system where the differences between input and output voltage levels have to be monitored and protected against over-voltages.

Among the PMIC hot swap controller devices is ISL6141IBZA-T which is an integrated circuit that provides protection for FPGA/PLDs, power supplies and sensitive current sources connected to the board. The ISL6141IBZA-T, with its triple-channel hot swap configuration, combines clamp and timer circuitry with a choice of output current limits, under-voltage lockout (UVLO), soft-start and adjustable thermal shutdown. The device offers a combination of low loss and high current, isolation, clamped (low EMI) outputs, and numerous other features which makes it suitable for applications where damaging high voltage spikes can exceed sensitive components limits.

Working Principle of ISL6141IBZA-T

The ISL6141IBZA-T combines triple-channel N-channel MOSFETs with a power clamping circuit, over-current protection (OCP), adjustable soft-start and undervoltage lockout (UVLO) features. It also includes programmable power on-delay, guaranteed off-time, rising, level-delay and falling trigger threshold levels. The device includes innovative features such as a TSSOP thermal monitoring circuit, over temperature protection with temperature monitoring, and LED drive current control for LED fading and flashing capabilities. Utilizing 3 independent N channel MOSFETs, the ISL6141IBZA-T can be used to control the power in a system with two input sources, two output sources, and one logic signal.

When the device is started, the OCP and UVLO circuits ensure that the power components in the system are not damaged by an overvoltage or overcurrent. When the output voltage exceeds the threshold voltage set for OCP, the MOSFETs are turned off thereby safeguarding the system. Similarly, when the supply voltage tends to drop below the UVLO threshold, the device stops functioning and the power components in the system are protected from any subsequent damage. This makes the device suitable for applications where any risk of overvoltage, overcurrent, and undervoltage must be avoided.

The TSSOP thermal monitoring feature makes use of an innovative technology to measure the temperature of the board and the surrounding components. This feature monitors any over-temperature conditions and cuts off power if the temperature is deemed unsafe. The LED drive current control feature allows the LED current to be adjusted in a range of 1mA to 10mA. It can also be used to produce LED fading and flashing effects.

ISL6141IBZA-T Application Field

Due to its combination of features and robust design, the ISL6141IBZA-T is used in several applications. It is primarily used for PCB-level power control in a wide variety of consumer electronics such as CCTV cameras, routers, and medical imaging equipment. The device can also be used for battery management system in automobiles. It is used to provide power to peripheral devices in server and storage systems, such as disk drives and solid state drives. ISL6141IBZA-T is also used in HVAC systems for controlling power to motors, fans, servo-motors, and other associated devices. Further applications include providing power control in laptop and cellular phone chargers, in portable computing and media devices, and in a variety of industrial and manufacturing processes.

The ISL6141IBZA-T is designed to be a reliable and robust hot swap controller and is used extensively in the audio and video industries. With its different input and output options, triple-channel N-channel MOSFETs, wide range of current, and multiple programmable features, it offers customers a variety of options to address their most demanding requirements.

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