MAX16924GGM/VY+

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Power management integrated circuits (PMICs) are important elements of design in today’s electronics, particularly in the age of mobile devices and the IoT. A PMIC serves as the central controller for managing the power systems for an entire device or system, controlling factors such as power sequencing, voltage scaling, and current delivery. MAX16924GGM/VY+ is an example of one such PMIC designed for a specific purpose, and it serves as a popular choice for engineers in need of these capabilities.

Application Field of MAX16924GGM/VY+

MAX16924GGM/VY+ is a dual-cell Li-ion/Lifepo4 battery charger and Linear Post Regulator PMIC. This delivers a full feature integration, a small display and high-reliability. It integrates two buck regulator, one buck boost regulator, 32-bit microcontroller, a display driver and a quality power path controller with all the system components. This PMIC is optimized for portable computing and consumer electronic applications, such as ultrabooks, tablets, smartphones and wearables.

MAX16924GGM/VY provides efficient and reliable power management solutions for applications that combine multiple powerDomains and offer numerous features, such as efficient dc-to-dc power management, accurate cell-balancing and a programming platform for dynamic control. This PMIC supports charging of two lithium ion or LiFePO4 cells and is the ideal choice for applications with complex chargin requirements.

The MAX16924GGM/VY+ also comes with dedicated linear post-regulator control and supports up to 1.2A of average load current. This PMIC also utilizes an integrated gate drive (IGD) feature to achieve fast turn-on times and minimize on-time of both external MOSFETs. It derivers BEMF sensing circuitry with accurate current sensing and thereby facilitating closed loop control and dynamic adjustment of current level.

Working Principle of MAX16924GGM/VY+

The working principle of MAX16924GGM/VY+ can be divided into two parts: the charger control and the linear regulator control. The charger control comes from a 32-bit microcontroller that is responsible for managing the charging process of the two lithium ion or LiFePO4 cells as well as for dynamic control of the charging current based on temperature, voltage, and other parameters. The charger control also has fault protection features, such as overvoltage protection, short circuit protection, and over temperature protection.

The linear regulator control involves two interdependent buck regulators and one buck-boost regulator with a dedicated gate drive. The two buck regulators use an accurate current sensing technique to regulate current draw from the battery cells and the buck-boost regulator produces a regulated output voltage. The buck-boost regulator also utilizes BEMF sensing circuitry to provide accurate current sensing, enabling closed loop control and dynamic adjustment of the current level.

In addition, MAX16924GGM/VY+ provides integrated support for a display driver, allowing users to connect a display panel to the PMIC and monitor various activity levels and other parameters. Lastly, the PMIC also provides support for PowerPath control, allowing users to control power routing and optimize power systems.

Conclusion

MAX16924GGM/VY+ is an optimized PMIC for portable computing and consumer electronic applications that require efficient and reliable power management. It features dual-cell Li-ion/Lifepo4 battery charging support as well as a Linear Post Regulator. The dual buck regulators and buck-boost regulator enable dynamic control and regulation of system power while the display driver enables users to monitor activity and other parameters. The PMIC also comes with integrated PowerPath control, enabling users to more efficiently route power in their system.

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