MAX5976AETE+T

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The MAX5976AETE+T belongs to a family of Hot Swap (HS) Controllers intended for driving a Synchronous Rectifier (SR) MOSFET for proper inrush current control in power supply systems such as Advanced Telecom Computing Architecture (ATCA). With the integration of the Over-Voltage and Under-Voltage Lock-Out (OVLO/UVLO) and an Delay Output Interface, it meets the needs for an efficient and safe power system for Power Supply Units (PSU).

The MAX5976AETE+T offers several benefits to system designers using the Hot Swap Controller technology:

• The Hot Swap Controller monitors the input voltage and current levels and provides an accurate output voltage level over a wide range of load variations.
• It also detects any over-voltage or under-voltage conditions, activating the power-down sequence and enabling the system to remain within a safe operating envelope over a wide range of conditions.
• It eliminates the need for an additional control circuit, allowing designers to meet tight space requirements while optimizing cost.
• It can be used to control the voltage and current levels of the power supplies, allowing quick and safe start-up of the system in a reliable manner.
• The delay output interface can be used to connect to an external MCU or DSP, to allow for further flexibility in system control.

The MAX5976AETE+T has several distinct sections, each with its specific role in the functioning of the Hot Swapping system.

Input & Output Circuit: The Input and Output Circuit are integrated onto the MAX5976AETE+T, and are designed to provide proper device operation as per the specifications. The circuit consists of an internal current-sense resistor and an N-channel MOSFET.

Control Logic Circuit: The logic circuit is responsible for all the control tasks, such as monitoring the voltage and current levels, and controlling the output voltage. It also enables the user to select different parameters such as the input voltage level, output voltage, and switch time delays.

Power Path Circuit: The power path circuit is integrated onto the MAX5976AETE+T, and provides protection for the system in the event of an over-voltage or under-voltage condition. It also ensures that the system is operated within the safe operating envelope and protects the connected devices from any over-voltage or under-voltage damage.

Delay Output Interface: The delay output interface allows an external microcontroller or DSP to be connected to the MAX5976AETE+T, which can be used to further expand the range of functions that can be performed. It enables the user to select different parameters such as the input voltage level, output voltage, and switch time delays, allowing for a more efficient operation.

The MAX5976AETE+T is designed to provide efficient and safe power to systems such as ATCA and other high-end embedded systems. It offers features such as accurate output voltage control over a wide range of load variations, current limiting, over-voltage and under voltage protection, and a delay output interface, allowing for greater system flexibility and control.

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