AG3 battery.Texas Instruments provides reference design for HEV/EV battery management system

　　According to foreign media reports, Texas Instruments (TI) has launched a fully tested reference design for battery management and traction inverter systems, as well as a new analog circuit with advanced monitoring and protection functions, which can help reduce carbon dioxide emissions and improve hybrid electric power generation. Range of car/electric vehicle. Texas Instruments' new battery management system (BMS) reference design features the advanced BQ79606A-Q1 precision battery monitor and balancer and is scalable to the 6-96 Series of battery monitoring circuits. Using this reference design, engineers can bring automotive designs to market faster. This reference design implements a battery monitor in a daisy chain that can be configured to create a highly accurate and reliable system design for the 3-378 Series, Li-ion battery packs from 12V up to 1.5kV. The highly integrated BQ79606A-Q1 battery monitor accurately monitors battery temperature and voltage levels to maximize battery life and driving time. In addition, the battery monitor's secure communications capabilities help system designers meet the requirements of Automotive Safety Integrity D (ASILD) Level, the highest functional safety goal defined by the ISO26262 road vehicle standard. Reliable Thermal Management System Throughout the Traction Inverter System Electric vehicles' traction inverters and batteries filter thousands of watts of power, resulting in high temperatures that can damage expensive and sensitive powertrain components. Good thermal management of the system is critical to the performance of the vehicle and to the protection of the vehicle and its passengers. In order to protect power systems such as 48V starter generators from overheating, Texas Instruments launched the TMP235-Q1 precision analog output temperature sensor. The device has low power consumption, ultra-low quiescent current (9-μA), and high accuracy (in an operating environment from -40°C to 150°C, the normal accuracy value is ±0.5°C, and the maximum accuracy value is ±2.5° C), can help traction inverter systems react to temperature spikes and apply appropriate thermal management techniques. Achieve advanced protection capabilities without sacrificing traction inverter system space Texas Instruments also recently introduced the UCC21710-Q1 and UCC21732-Q1 gate drivers, coupled with the newly launched TMP235-Q1 temperature sensing device, to help designers Enable smaller, more efficient traction inverter designs. The above-mentioned devices are the first insulated gate drivers and silicon carbide (SiC) field effect transistors to integrate sensing functions, which can help various applications achieve better system stability, making their insulation strength as high as 1.5kVRMS, and providing more than 12.8 kV insulation overload protection (rated insulation voltage is 5.7kV). Such devices also enable rapid detection to prevent current overloads while ensuring safety system shutdown. To power new gate drivers directly from the car's 12V battery, Texas Instruments has launched a new reference design demonstrating three types of IGBT/SiC bias supplies for use in traction inverters. The design includes reverse polarity protection, transient overvoltage clamping, overvoltage and undervoltage protection circuits. The compact design also includes the new LM5180-Q1, a 100V, 1A synchronous buck converter with quiescent current as low as 10-μA.

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