Reference Design For Excessive-Facet N-MOSFET (32s) Battery Pack

This reference design gives a complete resolution for superior battery administration, emphasizing effectivity, security, and reliability throughout numerous 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 power effectivity and longer battery life. One of these management structure is essential for functions requiring exact monitoring and safety of battery cells, comparable to in electrical autos, moveable energy stations, and industrial power storage programs. The flexibility to seamlessly handle cell voltage, pack present, and temperature ensures secure and optimum efficiency, making N-channel MOSFET management battery packs an integral part in fashionable, high-demand battery administration programs.

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 collection 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 secure battery pack operation. Its high-side N-channel MOSFET structure, coupled with optimized driving circuits, facilitates easy change 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 Sturdy Safety

The design embody a 300-μA consumption in standby mode, guaranteeing minimal energy draw and contributing to total power 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. Sturdy 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 components.

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 primary 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 assist 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 elements make sure the DSG MOSFET turns off utterly and swiftly, even with excessive voltage on the DSG pin.

The design incorporates a number of built-in elements: 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 control a large enter voltage vary, minimizing the necessity for exterior surge suppression elements; ISO164x units, that are hot-swappable, low-power, bidirectional isolators appropriate with I2C interfaces, enhancing communication reliability; and a CAN transceiver household that meets ISO11898-2 (2016) Excessive-Velocity CAN bodily layer normal, 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 strong communication in industrial environments. Purposes for this reference design embody battery packs for e-bikes, e-scooters, and lightweight electrical autos (LEVs); industrial battery packs for configurations with 10 or extra collection cells; moveable energy stations; and battery power storage programs.
TI have examined this reference design. It comes with a invoice of supplies (BOM), schematics, an meeting drawing, a gerber file, and so forth. You’ll find extra knowledge in regards to the reference design on the corporate’s web site. To learn extra about this reference design, click on right here.