产品概要
描述
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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性能一览
- 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 | 符合RoHS级别 | WEEE Compliant | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|---|
| EVL9962 | Active 产品已量产 | CARD | Industrial | Not compliant | - | - | - | |
EVL9962
Package:
CARDMaterial Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Supplier | Core Product | Board production status | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EVL9962 | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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EVL9962 Active