MAX16948AGTE/V+T

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Power management integrated circuits (PMICs) have become increasingly important components in modern electronic circuitry due to their ability to provide efficient and reliable power control, monitoring, and sequencing. One type of PMICs is specialized power management ICs, or special-purpose PMICs, which are designed to serve a specific purpose or set of capabilities. The MAX16948AGTE/V+T is a specialized PMIC that provides integrated energy management and control functions for automotive applications. In this article, we will discuss the application field and working principle of the MAX16948AGTE/V+T.

Application field

The MAX16948AGTE/V+T is an automotive-grade mixed-signal PMIC that is mainly used as an energy manager for battery-powered systems, such as hybrid and electric vehicles (EVs) and their power electronic subsystems. It provides an array of features and functions, including battery temperature sensing, isolation, power monitoring, and protection for car battery systems, as well as programmable digital control of on-board and onboard battery systems.

The MAX16948AGTE/V+T is designed to operate in the harsh automotive environment and provide reliable battery monitoring and control. The device is able to follow up to 8 battery cells, while its internal Active Cell Balancing (ACB) feature helps maximize efficiency and extend battery life. The device also provides over-temperature protection, up to 12V 2A output and 2A input, and galvanic isolation.

The MAX16948AGTE/V+T is tailored to meet Automotive Safety Integrity Level (ASIL) C requirements and is integrated with features, such as hardware and software shutdown, safety log monitoring, open-drain output, and 12-bit A/D converter, to ensure high reliability, robustness, and legal compliance for automotive applications.

Working Principle

The working principle underlying the MAX16948AGTE/V+T can be broken down into four main steps: power monitoring, power and energy management, safety features, and digital control. The MAX16948AGTE/V+T first uses its internal analog circuitry to monitor the battery cells and determine their voltage, current, and temperature. This data is then passed to the power and energy management feature, which uses an internal look-up table to decide the appropriate charging/discharging action. The MAX16948AGTE/V+T then implements the power and energy management algorithms to control the power flow based on the information gathered during the monitoring step.

The safety features within the MAX16948AGTE/V+T protect the system from a variety of potential hazards, such as overvoltage, overcurrent, overcharge, and over temperature. The device also includes safety log hardware and software to track voltage drops and battery temperature, as well as a variety of other safety-related measurements. Finally, the device contains programmable digital logic, which allows the designer to customize the battery energy management algorithms in order to optimize system performance.

In summary, the MAX16948AGTE/V+T is designed to provide an integrated energy management and control system for automotive applications. The device provides an array of features and functions, including monitoring, power management, and safety features, while its internal Active Cell Balancing (ACB) feature helps maximize efficiency and extend battery life. The MAX16948AGTE/V+T is tailored to meet ASIL C requirements and is integrated with features, such as hardware and software shutdown, safety log monitoring, open-drain output, and 12-bit A/D converter, to ensure high reliability, robustness, and legal compliance for automotive applications.

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