MAX5937LCESA+T

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Power management ICs, commonly known as PMICs, have become increasingly important in recent years as they provide a wide range of functions, such as controlling current and voltage, managing battery charging and discharging, and monitoring power system integrity. The MAX5937LCESA+T is a PMIC Hot Swap Controllers device which is designed to enable reliable, high power, thermal controlled, hot-swap applications.

Application Field

The MAX5937LCESA+T PMIC is ideal for hot-swap applications such as hot-swap backplanes, multi-rail power distribution systems, N+1, and redundancy or failover power systems. It provides individual channel control and protection making it suitable for a wide range of applications, from power converters and consumer electric applications to industrial machine control and communications systems.

The MAX5937LCESA+T is designed to allow efficient and safe power distribution in multiple power domains. It provides current limit and current trip protection as well as faults and warnings, allowing the system to be safely shut down in the event of an over-current or over-temperature condition. The device also provides over-voltage protection and output voltage scaling to ensure that the power distribution system remains safe and reliable.

Working Principle

The MAX5937LCESA+T is a dual channel Hot Swap Controller. Each channel includes a 2/4 phase output stage with integrated thermal protection, and includes a power switch control circuit and a logic control circuit. The power switch control circuit consists of individual channels, which provide current limiting and voltage monitoring. The logic control circuit includes power-up sequencing, startup voltage scaling and fault detection.

In each channel, the power switch control circuit monitors the output voltage and current set-points, and has integrated current-limit protection. When an over-current fault is detected, the power switch control circuit will shut down the channel.

The Hot Swap Controller also includes an integrated thermal protection function. If the temperature exceeds a predefined set-point, the device will shut down the channel. The device\'s over-voltage protection will shut down the channel when the output exceeds its allowable range.

In addition, the MAX5937LCESA+T also includes a power-up sequencing feature, which allows for two user-defined voltage set points for up to four power-up phases. This allows for multiple, non-monotonous power supply profiles, which enables the device to efficiently power up devices with different power requirements.

The MAX5937LCESA+T Hot Swap Controllers provide a robust and cost-effective solution for power management in many applications. It is designed to be reliable and safe with protection functions including current limiting, voltage monitoring, thermal protection and over-voltage protection. This makes the device a suitable choice for hot-swap applications as well as multi-rail power distribution systems, N+1, and redundancy or failover power systems.

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