This reference design gives a complete answer for superior battery administration, emphasizing effectivity, security, and reliability throughout varied high-cell-count and high-voltage functions.
N-channel MOSFET management battery pack lies in its superior effectivity, reliability, and flexibility in managing high-cell-count, high-voltage functions. Using N-channel MOSFETs permits for higher thermal efficiency and decrease resistance, leading to enhanced vitality effectivity and longer battery life. This kind of management structure is essential for functions requiring exact monitoring and safety of battery cells, resembling in electrical autos, transportable energy stations, and industrial vitality storage techniques. The flexibility to seamlessly handle cell voltage, pack present, and temperature ensures protected and optimum efficiency, making N-channel MOSFET management battery packs an integral part in trendy, high-demand battery administration techniques.
This reference design TIDA-010247 by Texas Devices outlines a high-side, N-channel MOSFET management battery pack able to managing as much as 32 sequence cells utilizing the BQ769x2 battery monitor household. The design meticulously displays every cell’s voltage, pack present, and the temperature of each cells and MOSFETs, guaranteeing safe and protected battery pack operation. Its high-side N-channel MOSFET structure, coupled with optimized driving circuits, facilitates easy swap management. This reference design boasts low stand-by and ship-mode consumption and fine-tunes the present gaps between two teams, making it perfect for high-cell-count, high-voltage battery-pack functions.
Effectivity, Accuracy, and Strong Safety
The design embrace a 300-μA consumption in standby mode, guaranteeing minimal energy draw and contributing to total vitality effectivity. In ship mode, the design achieves an ultra-low consumption of 10 µA, preserving battery life throughout long-term storage. The voltage accuracy is maintained at ±5-mV at 25°C with out calibration, enhancing the reliability of battery administration. Strong and programmable safety gives complete security for each battery cells and the system, customizable to particular wants. The high-side N-channel MOSFETs with robust driving functionality facilitate environment friendly and dependable management over the switching parts.
For energy supply and effectivity, the design integrates a 120-V enter, 0.3-A, ultra-low IQ synchronous buck DC/DC converter (LM5168P) and a low IQ 0.3-A LDO (TPS7A25) as the principle energy sources. When working in regular mode, which requires important present together with CAN or RS-485 communications, this setup gives higher effectivity and thermal efficiency in comparison with LDO-only configurations. The high-side N-channel MOSFET structure and the BQ76942 cost pump help driving and voltage administration. The highest BQ76942 references the highest of the underside stack for cell voltage measurement. When the DSG MOSFET turns off, discrete parts make sure the DSG MOSFET turns off fully and swiftly, even with excessive voltage on the DSG pin.
The design incorporates a number of built-in parts: the BQ76942, a highly-integrated, high-accuracy battery monitor and protector for 3-series to 10-series Li-ion, Li-polymer, and LiFePO4 battery packs; the LM5169 and LM5168 synchronous buck converters, designed to manage a large enter voltage vary, minimizing the necessity for exterior surge suppression parts; ISO164x units, that are hot-swappable, low-power, bidirectional isolators suitable with I2C interfaces, enhancing communication reliability; and a CAN transceiver household that meets ISO11898-2 (2016) Excessive-Velocity CAN bodily layer customary, appropriate for CAN FD networks as much as 2Mbps. The THVD2410 and THVD2450 units are ±70-V fault-protected, half-duplex RS-422, RS-485 transceivers, guaranteeing sturdy communication in industrial environments. Purposes for this reference design embrace battery packs for e-bikes, e-scooters, and light-weight electrical autos (LEVs); industrial battery packs for configurations with 10 or extra sequence cells; transportable energy stations; and battery vitality storage techniques.
TI have examined this reference design. It comes with a invoice of supplies (BOM), schematics, an meeting drawing, a gerber file, and so on. You will discover extra information concerning the reference design on the corporate’s web site. To learn extra about this reference design, click on right here.
