ISL61862BCRZ

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Intermediate-stage power management integrated circuits (PMICs) provide total power-system control, from a single device, for multiple integrated circuits (ICs) and heavy loads. The ISL61862BCRZ is a PMIC designed for hot swapping applications. In this guide, we will look at the application field and working principle of this chip in greater detail.

Application Field

The ISL61862BCRZ operates from a wide input voltage range of 3.2V to 32V and is a single chip hot-swap solution to protect 1.2V to 5.5V rail components against short-circuit and over-current conditions. This device accepts both active and passive inputs, such as voltage sequencing, power-good (PG) signal, over-current fault (OCP) signal, and other external inputs. It is suitable for applications such as network equipment, data- and telecom systems, HPC (High Performance Computing), infotainment, power supplies, and so forth.

Working Principle

The ISL61862BCRZ consists of two channels with independent under-voltage (UV), over-voltage (OV) locks, programmable current limit, and programmable soft start. The over-current and over-voltage protection are activated only after the input voltage exceeds the UV lock and the output voltage reaches the OV lock.

The device is designed for systems without external current-limiting components, such as inrush current limiters and fuse compartments. The programmable input OV and UV locks allow the device to limit the output voltage overshoot at startup. The device also includes a power-good signal that is used as an advisement of when output voltage is stabilized.

The ISL61862BCRZ also provides a reverse current protection which prevents the current spikes generated when the output inductor is open, and therefore it enables the reliable operation of power rails even during power-on/off. In addition, the device provides a programmable soft start which helps in reducing the output current surge during startup.

With its wide operating input voltage and integrated protection functions, the ISL61862BCRZ is the ideal power solution for hot swapping applications. It\'s capabilities ensure reliable power rail control and protection for multiple integrated circuits and heavy loads.

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