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PMIC - Power Supply Controllers, Monitors

The MAX15049ETJ+ is a full-featured power management integrated circuit (PMIC) used in a variety of applications, from consumer electronics to media phones, industrial devices, and automotive applications. Specifically, it is a controller and monitor for primaries and secondaries of a synchronous switched-mode power supply. It integrates several features, such as a high voltage start up, an input/output voltage monitor, and an input current/power limit controller.

Features

The MAX15049ETJ+ offers high voltage capabilities and withstands up to 24V input voltage. It provides voltage, current, power, and temperature monitoring and protection. It has features to support the synchronization of the switching frequency, making it suitable for both constant frequency and voltage-position mode (VPM) systems. In addition, the MAX15049ETJ+ contains a high performance current-mode controller with a floating high side and online diagnostics functions, including brownout protection, overvoltage protection and regulation, as well as undervoltage protection and regulation.

Application fields

The MAX15049ETJ+ is an ideal solution for a wide range of applications. It is suitable for both AC/DC and DC/DC single-ended and differential switched-mode power supplies, including those found in computers, TVs, handheld media players and cellular phones. It is also suitable for automotive applications with high-voltage requirements. The wide operating temperature range of the MAX15049ETJ+ (from -40°C to 125°C) makes it suitable for a wide variety of systems designs.

Working Principle

The MAX15049ETJ+ operates in a synchronous switched-mode power supply (SMPS). It is a controller and monitor for primaries and secondaries of a synchronous switched-mode power supply. In such applications, the MAX15049ETJ+ is used to control the switching of the power stage of the SMPS. The MAX15049ETJ+ employs a high-performance primary-side synchronous current-mode controller with a floating high side to convert an AC or DC input source (battery, adapter, etc.) into a regulated output voltage. The MAX15049ETJ+ provides a wide input voltage range of 3.3V to 24V, operating in multiple modes including constant-frequency, voltage-position mode (VPM), and digtal pulse width modulation (PWM). With the wide input voltage range and the advanced control scheme, the MAX15049ETJ+ is capable of delivering up to 25W of power.

The MAX15049ETJ+ also monitors and controls the input current, voltage, and power. On the secondary side, the MAX15049ETJ+ monitors and controls the output voltage and temperature. Further, the MAX15049ETJ+ provides an integrated brownout protection, an overvoltage regulation and protection, and an undervoltage protection and regulation. The MAX15049ETJ+ also provides fault and diagnostic reporting via SMBus.

Conclusion

The MAX15049ETJ+ is a full-featured PMIC used in a variety of applications. It integrates several features, such as a high voltage start-up, an input/output voltage monitor, and an input current/power limit controller. The MAX15049ETJ+ provides a wide input voltage and high-performance current-mode controller with a floating high side and online diagnostics functions. The wide operating temperature range of the MAX15049ETJ+ (from -40°C to 125°C) makes it suitable for a wide variety of systems designs.

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