MAX5913AEMH+D

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The MAX5913AEMH+D is a Hot Swap controller from the extensive portfolio of Power Management ICs (PMICs) from Maxim Integrated. In this paper, the application fields, working principle and features and design benefits of the MAX5913AEMH+D are discussed.

Application Fields:

The MAX5913AEMH+D is designed for hot swap applications requiring supply sequencing, stringent inrush current limits and fault protection in 12V systems. It is suitable for compute blades, FPGA boards and power converter stacks, providing robust hot swap and sequencing protections.

Working Principle:

The MAX5913AEMH+D hot swap controller utilizes an integrated NFET power switch with a fast-responding crowbar circuit to protect the hot swapped device. The NFET presents a resettable supply current limit, which when exceeded briefly triggers the crowbar event. Additionally, the MAX5913AEMH+D senses undervoltage, overcurrent and open wiring faults, and provides time-delayed enable/disable sequencing and order control over powered peripheral devices.

Features and Design Benefits:

The MAX5913AEMH+D Hot Swap controller provides the following features and design benefits:

• Integrated NFET and crowbar protection
• Active current limit
• Independent OVP and UVP detection
• Open wiring and failure shutdown
• Foldback current limit protection
• Undervoltage and thermal shutdown
• 5V logic supply voltage regulator
• Real-time current limit on a cycle-by-cycle basis
• Time-delayed enables/disables and sequencing capabilities
• 3-state linear regulator
• Low dropout voltage
• Reduced charge injection
• Saves system power
• High efficiency power conversion
• Power-good indicator
• Simplified system design

The MAX5913AEMH+D hot swap controller offers an integrated solution for regulating and protecting the power system in hot swap applications. It provides comprehensive protection and precision voltage regulation, and helps reduce board space and component count. It also provides a power-good indicator, enabling the monitoring of power supply faults. Furthermore, it enables the implementation of a redundant power supply, with current-limiting, sequencing and protection functions.

Conclusion:

The MAX5913AEMH+D Hot Swap controller is designed for use in systems requiring powering, sequencing and protection of load boards in 12V systems. It features an integrated NFET and crowbar protection, active current limit, independent OVP and UVP detection, open wiring and failure shutdown, time-delay enables/disables and sequencing capabilities, 3-state linear regulator and more. With its comprehensive protection and precision voltage regulation features, the MAX5913AEMH+D hot swap controller is an ideal choice for hot swap applications requiring supply sequencing, stringent inrush current limits and fault protection.

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