| Allicdata Part #: | 296-45647-ND |
| Manufacturer Part#: |
BQ27425EVM-G2A |
| Price: | $ 71.96 |
| Product Category: | Development Boards, Kits, Programmers |
| Manufacturer: | Texas Instruments |
| Short Description: | EVALUATION BOARD FOR BQ27425 |
| More Detail: | BQ27425 Fuel Gauge Power Management Evaluation Boa... |
| DataSheet: |  BQ27425EVM-G2A Datasheet/PDF |
| Quantity: | 4 |
| 1 +: | $ 64.76400 |
Specifications
| Series: | Impedance Track™ |
| Part Status: | Active |
| Type: | Power Management |
| Function: | Fuel Gauge |
| Embedded: | -- |
| Utilized IC / Part: | BQ27425 |
| Primary Attributes: | -- |
| Supplied Contents: | Board(s) |
| Secondary Attributes: | I²C Interface |
Description
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The BQ27425EVM-G2A is an evaluation and demonstration board and kit for the BQ27425-G2A. It is a high-accuracy, general-purpose fuel gauge circuit that is ideal for many lightweight portable applications. The device features an integrated coulometer and a real-time clock, which, when combined with the current, voltage, and temperature data from external sources, are used to accurately predict the remaining capacity of the power source, allowing users to accurately estimate the runtime of whatever application they are evaluating.
Using the BQ27425EVM-G2A requires setting some parameters, depending on the battery chemistry and other options, via the Configuration Wizard utility or a set of configuration options. This allows users to tailor-fit the device to their application. The device also includes an integrated Coulomb Counter to enable incremental or decremental charging for Lithium-Ion batteries.
The BQ27425EVM-G2A includes a number of features beyond the coulometer and real-time clock mentioned above. It includes charge and discharge current registers, a voltage register, and a temperature register, as well as a register used to store historical data such as the average voltage, energy available, and overall system health. Its integrated digital interface accepts direct-current input from external sources such as shunt resistors, voltage dividers, or a fuel gauge integrated circuit. Note that the actual voltage data is generated with an external VSEN impedance voltage divider from the battery voltage, so the actual battery voltage is not measured or used directly in the calculations.
In terms of accuracy, the BQ27425EVM-G2A is designed to be highly accurate using an end-of-charge voltage detector and an aging state-of-charge algorithm. These combine with temperature measurement and current sensing data to create an estimated state-of-charge that is highly accurate for various battery chemistries, including Nickel-Cadmium, Lithium-Ion, and Lithium-Polymer. The device also includes an internal temperature sensor for reliable operation in extreme temperatures.
In summary, the BQ27425EVM-G2A is an evaluation and demonstration board and kit suitable for accurately gauging the current state-of-charge for a variety of battery chemistries and provides a robust feature set including an integrated Coulomb Counter and temperature sensing. This makes the BQ27425EVM-G2A an ideal choice for evaluating battery performance and accurately calculating estimated runtime.
The specific data is subject to PDF, and the above content is for reference
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