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| MM9Z1J638智能電池監測解決方案 |
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| 文章來源： 更新時間：2014/5/24 10:21:00 |
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Freescale公司的MM9Z1J638是集成了CAN和LIN的智能電池傳感器,是全集成的智能電池監測系統,通過外接并聯電阻支持精密的電流測量,具有四個電壓測量.器件包括內部的溫度傳感器,允許進行非常接近的電池溫度測量,同時具有四個外接溫度傳感器輸入.MM9Z1J638還具有LIN 2.2協議和物理接口以及msCAN協議控制器,用來和汽車總線接口.主要用在汽車電子和工業控制.本文介紹了MM9Z1J638主要特性,框圖,典型應用電路和12V應用電路,以及評估板KIT9Z1J638EVM主要特性,框圖,測試建立圖,電路圖,材料清單和PCB元件布局圖.
The MM9Z1_638 is a fully integrated intelligent battery monitoring system. The device supports precise current measurement via an external shunt resistor. It features four voltage measurements via internal calibrated resistor dividers or external dividers. It includes an internal temperature sensor, allowing close proximity battery temperature measurements, plus four extern al temperature sensor inputs.
The MM9Z1_638 features the LIN 2.2 protocol and physical interface, as well as an msCAN protocol controller, for interfacing to automotive buses.
The MM9Z1_638 is able to supply and control external CAN interfaces.
This device is powered by SMARTMOS technology.
MM9Z1J638主要特性:
• Wide range battery current measurement; On-chip temperature measurement
• Four battery voltage measurements with internal resistor dividers, and up to five direct voltage measurements for use with an external resistor divider
• Measurement synchronization between voltage channels and current channels
• Five external temperature sensor inputs with internal supply for external sensors
• Low-power modes with low-current operation
• Multiple wake-up sources: LIN, timer, high-voltage input, external CAN interface, and current threshold and integration
• Precision internal oscillator and connections for external crystal
• LIN 2.2/ 2.1/ 2.0 protocol and physical interface
• msCAN protocol controller, and supply capability for 8 and 14 pin CAN interfaces
• MM9Z1_638: S12Z microcontroller with 96/128 kByte Flash, 8.0 kByte RAM, 4.0 kByte EEPROM
MM9Z1J638目標應用:
• Automotive
Battery monitoring
Hybrid electric vehicle (HEV) inverter controller
• Industrial
Energy storage systems (ESS)
Hybrid electric vehicle (HEV)
Cordless tools and appliances
圖1.MM9Z1J638框圖
圖2.MM9Z1J638典型應用電路
圖3.12V MM9Z1J638典型應用電路
MM9Z1J638評估板KIT9Z1J638EVM
Freescale’s KIT9Z1J638EVM is a hardware tool for evaluation and development. It is ideal for rapid prototyping of MCU-based applications for current, voltage and temperature sensing. The intelligent battery sensor MM9Z1J638 hardware, KIT9Z1J638EVM, is a simple, yet sophisticated design featuring an intelligent battery sensor with CAN and LIN.
KIT9Z1J638EVM can be used to evaluate the MM9Z1_638 family device. It features a MM9Z1J638, integrating a S12Z MCU and a SMARTMOS analog control IC into a single-package solution. The MM9Z1J638 enables precision measurement of key battery parameters, current, voltage and temperature. The acquisitions are run through three 16-bit sigma-delta ADCs embedded into the analog IC.
The MM9Z1J638 features a LIN protocol and physical interface compatible with LIN 2.0/2.1/2.2 requirements and MSCAN protocol controller and supply capability for 8 and 14 pin CAN interface.
The on-board interfaces include CAN, LIN. The CAN Physical Layer footprint allows to mount 8- or 14-pin CAN interface; the connection of the physical layer to MM9Z1J638 is done through jumpers to allow each configuration.
The KIT9Z1J638EVM is featuring Open Source BDM (OSBDM) providing low-speed debug communications to the S12Z core.
評估板KIT9Z1J638EVM主要特性:
The KIT9Z1J638EVM evaluation board demonstrates the MM9Z1J638 multi-chip module IC. The board’s main features are as follows:
•MM9Z1J638 intelligent battery sensor in a 48-QFN package with wettable flank
•High-speed CAN interface using MC33901, high-speed CAN transceiver and msCAN protocol layer embedded into the MM9Z1J638
•LIN interface
•Customizable GPIOs for voltage and temperature sensing
•LED indicators
•Onboard BDM connection via open source OSBDM circuit using the MC9S08JM60 MCU.
•Support for external BDM interface (for instance P&E USB Multilink BDM interface)
圖4. 評估板KIT9Z1J638EVM外形圖
圖5. 評估板KIT9Z1J638EVM框圖
圖6. 評估板KIT9Z1J638EVM測試建立圖
圖7. 評估板KIT9Z1J638EVM電路圖(1)
圖8. 評估板KIT9Z1J638EVM電路圖(2)
評估板KIT9Z1J638EVM材料清單:
圖9. 評估板KIT9Z1J638EVM PCB元件布局圖:頂層
圖10. 評估板KIT9Z1J638EVM PCB元件布局圖:底層 |
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