TAA3033 Active Precharge Controller IC
コンパクトリスト
Battery Junction Box Monitor IC with EIS Capability
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The BMA8420 is a battery junction box controller integrated circuit (IC) with electrochemical impedance spectroscopy (EIS) capability designed for automotive applications such as hybrid electric vehicles (HEV), electric vehicles (EV) and industrial applications (ESS).
The device measures redundant currents, voltages and temperatures. It processes the results and detects fault events such as short circuit, system overload, crash signals, etc. These events can be combined and used to trigger reactions without a microcontroller (MCU) including general-purpose inputs/outputs (GPIOs) or a pyrotechnic switch.
The device offers an isolated daisy chain (TPL3) or a serial peripheral interface (SPI) for communication with the MCU. The BMA8420 delivers the features needed for applications to achieve the maximum ASIL D standards.
製品詳細
Features
Current Measurement
- Four current measurement channels (supporting two ASIL D current measurements)
- One precise measurement branch and one fast measurement branch per channel
- Shunt temperature drift compensation based on an external temperature sensor
- Overcurrent detection (OD) (threshold, di/dt calculation and melting fuse emulation)
Precise Voltage Measurement
- Two independent precision voltage measurement channels
- Clock-cycle-accurate synchronization with current measurements
General-Purpose Measurement
- Two independent sets of eight measurement inputs
- Multiplexed with 2 x 8 GPIOs
Event Manager
- Configurable decision engine to assess measurement inputs and trigger reactions
- Set of event signals (e.g., high di/dt, overcurrent, overvoltage and overtemperature)
- Triggering reactions (e.g., pyrotechnic switch controller, MCU wake-up and GPIOs)
Pyrotechnic Switch Controller (PSC)
- Two independent controllers including driver stage
- AK-LV 16 (2012-07) compliant
- Rapid triggering by the event manager without MCU processing
- Extensive set of diagnostics (diagnostic current, capacitor measurement, equivalent series resistance [ESR] measurement, etc.)
Communication
- SPI controller host interface and inter-integrated circuit (I²C) host interface
- MCU host controller supporting SPI or transformer physical layer, second generation (TPL2)
EIS
- Integrated single-frequency discrete Fourier transform (DFT) calculation
- Synchronization between host clock and cell measurement
- Synchronized 50% duty cycle GPIO output for EIS excitation
関連製品
設計・リソース
ソフトウェア
クイック・リファレンス ソフトウェア・タイプ.
4 ソフトウェア・ファイル
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アプリケーション例 ソフトウェア
NXPバッテリー・マネジメント・ソフトウェア開発キットおよびツールチェーン
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アプリケーション例 ソフトウェア
BMS GEN2 SL SDK DEMO AUTOSAR 4.4 R21-11 Version 0.9.1
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アプリケーション例 ソフトウェア
BMS GEN2 SDK AUTOSAR 4.4 R21-11 Version 0.9.1
注: より快適にご利用いただくために、ソフトウェアのダウンロードはデスクトップで行うことを推奨します。