MAX15091ETI+

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MAX15091ETI+ is a hot swap device that offers supervisory circuit protection, current limitation, hot insertion and thermally enhanced package that supports power bus architectures. This hot swap controller protects any system from accidental over-current conditions, while providing bidirectional electronic circuit breaker improvements, making it particularly useful for hot-swap applications.

Application Field

MAX15091ETI+ hot swap controllers are ideal for servers, storage systems, blade servers, switches, routers and optical modules. The MAX15091ETI+ hot swap controllers support input voltage range from +4.5V to +10V, making it suitable for both +3.3V and +5V power bus architectures. With the integrated charge pump and slew rate control, it delivers a regulated supply voltage during hot-insertion to ensure safe and reliable operation. The internal logic circuitry is further enhanced to ensure reliable operation and better hot-swap protection.

Working Principle

The MAX15091ETI+ hot swap controllers work by monitoring the current on the power bus and using a dynamic control loop to control the power enable pin in order to protect against overcurrent spikes. When a system using the MAX15091ETI+ is placed in a power bus, the power enable pin is set to a logic high. The controller has an internal shunt resistor that monitors the current on the power bus. When the current reaches the overcurrent threshold, the controller turns off the power enable pin. Once the current falls below the overcurrent threshold, the hot swap controller re-enables the power enable pin and the operation is resumed. The MAX15091ETI+ hot swap controllers provide thermally enhanced package for dissipating heat during power up and power down. It also prevents unsafe operation in the event of an over-current or short circuit condition.

Conclusion

MAX15091ETI+ hot swap controllers offer an easy to implement solution for hot swap applications. The controllers offer low power consumption, adjustable current limit settings and excellent noise immunity. The internal logic circuitry ensures reliable operation and superior hot-swap protection. The thermally enhanced package dissipates heat during power-up and power-down, and prevents unsafe operation in the event of an over-current or short-circuit condition.

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