製品概要
概要
The IC board integrates the L9962 BMS device, a complete battery pack monitoring, balancing, and protection system for Li-Ion and Li-Polymer cells in 4-10 series configurations. The L9962 evaluation kit consists of an expansion board containing the L9962 IC for battery pack monitoring solutions, along with an emulation board and the NUCLEO-G071RB STM32 Nucleo-64 development board. The expansion board is specifically designed to stack on the NUCLEO-G071RB development board using ST morpho connectors. Equipped with a high-precision ADC, the device continuously measures individual cell voltages, total stack voltage, and temperature via an external NTC sensor. These voltage measurements are performed cyclically with a configurable timing loop. Current sensing is handled by a highly accurate current sense amplifier (CSA), which operates continuously and supports Coulomb counting for precise tracking of battery charge and discharge. Cell balancing functionality is included, allowing a maximum balancing current of 70 mA
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機能一覧
- 2 μA SHIPMENT - DEEP_SLEEP mode current and 2.5 μA standby consumption (with VREG LDO active)
- Integrated 3.3 V VREG LDO for supplying MCU and LEDs
- Measures cell voltage (4 to 10 cells), with over/undervoltage detection as well as balance undervoltage protection
- 12-bit voltage measurement with maximum error of ±7.5 mV in the [1.5 – 4.5] V range, for -40°C < TJ < 105°C
- Measures stack voltage, with over/under voltage detection and plausibility check vs. sum of cells
- Measures pack temperature via NTC, with over/under temperature detection
- Ratiometric temperature measurement with ±0.8% max. gain error in the [0.2 – VREG] V range, for -40°C < TJ < 105°C
- Measures battery current, with Coulomb counting, overcurrent (both directions) and short-circuit in discharge protection.
- 16-bit signed current measurement with a maximum error of 0.25%, for -40°C < TJ < 120°C after customer end of line calibration with a single point
- I2C peripheral for device programming and data transfers over the I2C bus
- Cell balancing supporting up to 70 mA per cell
- Dual configurable HS/LS predriver for pack relay management
- Pack fuse management
- Embedded NVM for configuration parameters storage with lock functionality
- High hot-plug robustness
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHSコンプライアンスグレード | WEEE Compliant | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|---|
| EVL9962 | Active 交換品交換品 | CARD | Industrial | Not compliant | - | - | - | |
EVL9962
Package:
CARDMaterial Declaration**:
(**) st.comで提供している材料宣誓書は、パッケージ･ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください
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Sample & Buy
| Part Number | 製品ステータス | Budgetary Price (US$)*/Qty | STから購入 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Supplier | Core Product | Board production status | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EVL9962 | | | distributors 販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください |
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EVL9962 Active
販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください
（*）概算用の参考価格（US$）です。現地通貨でのお見積りについては、STのセールス･オフィスまたは販売代理店までお問い合わせください。