BQ294604DRVR

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Power management integrated circuit (PMIC) products are commonly used in automotive, consumer, industrial and medical applications and related equipment. A strong functional base of voltage regulator, LED drivers, LED flash controllers, LED backlight drivers and many more provide designers with more sources of tools and optimized solutions for today’s power and energy requirements. One such PMIC is BQ294604DRVR (BQ294604), which is designed for advanced battery management.

BQ294604DRVR Application Field
The BQ294604DRVR is a power management integrated circuit specifically designed for automotive battery pack protection applications. It is a three-cell protection IC with integrated SmartCellPack™ (SCP) technology, which integrates all the necessary features such as a cell monitor and balancing circuit, a programmable over-voltage monitoring and over-temperature protection, and a fuse monitor into a single package. The device supports three differential ADC inputs, enabling it to provide complete lookup table and linear regulation. With its integrated SCP technology, BQ294604DRVR provides the industry’s highest level of safety for the automotive battery pack.

The device is designed to protect Lithium-ion (Li-ion), Lithium-polymer (Li-poly), and Nickel-metal hydride (NiMH) batteries from overvoltage, undervoltage, overcurrent, and overtemperature. BQ294604DRVR is capable of detecting and responding to faults extremely fast, thus providing a high level of safety protection for the battery pack.

The device is able to detect up to five channels of battery cell voltages and provide accordingly protection against each cell over-voltage, under-voltage, or other fault conditions. BQ294604DRVR offers a full range of diagnostic and alert features that enable system designers to diagnose, analyze, and monitor their battery packs and ensure the overall system health.

BQ294604DRVR Working Principle
BQ294604DRVR is a two-channel programmable over-voltage, undervoltage and over-temperature protection IC specifically designed for automotive battery packs. The device contains two input channels that measure the cell voltages. These inputs are connected to an onboard differential ADC. The ADC converts the cell voltage measurements into a digital signal that is used to monitor the battery pack for various fault conditions.

The device is programmed with a look-up table that contains predetermined over-voltage and under-voltage values for each cell voltage. When the input cell voltage is higher or lower than the pre-programmed thresholds, a safety event is triggered and the protection circuit is enabled. The device is also able to detect over-temperature events and can trigger the protection circuit accordingly. The device also features a programmable alarm level, which can be used to notify system designers of potential faults or to notify users if the battery needs to be replaced.

In addition, the device is able to provide system designers with remote monitoring capabilities. This enables designers to monitor the battery system remotely and customize the protection parameters accordingly. The remote monitoring capability also allows for remote user notification of any protection events.

The BQ294604DRVR is a complete power management solution for automotive battery packs. It is designed to protect batteries from overvoltage, under-voltage, over-temperature and other catastrophic failures. The device is programmed to monitor the battery cells and notify users of any potential fault conditions in the system. It also provides remote monitoring capabilities and the ability to customize safety parameters for the battery pack. With its integrated SmartCellPack™ technology, the BQ294604DRVR provides the highest level of safety for the automotive battery packs.

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