Always follow TI’s set-up and application instructions, including use of all interface components within their recommended electrical rated voltage and power limits. Always use electrical safety precautions to help ensure your personal safety and the safety of those working around you. Contact TI’s Product Information Center http://support/ti./com for further information.

Save all warnings and instructions for future reference.

Failure to follow warnings and instructions can result in personal injury, property damage, or death due to electrical shock and/or burn hazards.

The term TI HV EVM refers to an electronic device typically provided as an open framed, unenclosed printed-circuit-board assembly. This is intended strictly for use in development laboratory environments, solely for qualified professional users having training, expertise, and knowledge of electrical safety risks in development and application of high-voltage electrical circuits. Any other use or application are strictly prohibited by Texas Instruments. If you are not suitably qualified, then immediately stop from further use of the HV EVM.

1. Work Area Safety:
   1. Keep work area clean and orderly.
   2. Qualified observers must be present any time circuits are energized.
   3. Effective barriers and signage must be present in the area where the TI HV EVM and the interface electronics are energized, indicating operation of accessible high voltages can be present, for the purpose of protecting inadvertent access.
   4. All interface circuits, power supplies, evaluation modules, instruments, meters, scopes and other related apparatus used in a development environment exceeding 50 V_RMS or 75 VDC must be electrically located within a protected Emergency Power Off (EPO) protected power strip.
   5. Use a stable and non-conductive work surface.
   6. Use adequately insulated clamps and wires to attach measurement probes and instruments. No freehand testing whenever possible.
2. Electrical Safety:As a precautionary measure, a good engineering practice is to assume that the entire EVM can have fully accessible and active high voltages.
   1. De-energize the TI HV EVM and all the inputs, outputs, and electrical loads before performing any electrical or other diagnostic measurements. Revalidate that TI HV EVM power has been safely de-energized.
   2. With the EVM confirmed de-energized, proceed with required electrical circuit configurations, wiring, measurement equipment hook-ups and other application needs, while still assuming the EVM circuit and measuring instruments are electrically live.
   3. Once EVM readiness is complete, energize the EVM as intended.
   WARNING: WARNING: while the EVM is energized, never touch the EVM or the electrical circuits as the EVM or the electrical circuits can be at high voltages capable of causing electrical shock hazard.
3. Personal Safety:
   1. Wear personal protective equipment, for example, latex gloves or safety glasses with side shields or protect EVM in an adequate lucent plastic box with interlocks from accidental touch.
4. Limitation for Safe Use:
   1. EVMs are not to be used as all or part of a production unit.

The following warnings and cautions are noted for the safety of anyone using or working close to the BQ79616 EVM. Observe all safety precautions.

	Caution	Do not leave EVM powered when unattended.
	Danger High Voltage	The BQ79616EVM is rated as a high voltage EVM, but is not required to operate this EVM at high voltage. If you apply high voltage to this board, then all terminals must be considered high voltage. Electric shock is possible when connecting the board to live wire. The board must be handled with care by a professional. For safety, use of isolated test equipment with overvoltage and overcurrent protection is highly recommended.

TI's BMS021 Battery Management System (BMS) is an evaluation board for the BQ7961X-Q1 family of devices for use in large format lithium-ion battery pack applications to provide monitoring, protecting, balancing, and communications. There are two variants of the evaluation board, the BQ79616EVM and the BQ75614EVM.

Each BQ79616EVM can manage up to 16 cells (80-V max) for Li-ion battery applications. Up to 35 BQ79616EVM modules can be stacked for packs up to 560 series cells.

Each BQ75614EVM can manage 14 or 16 cells (80-V max) for Li-ion battery applications. The standalone BQ75614EVM module includes integrated current sense.

Each system provides fast cell balancing, diagnostics, and module to controller communication. Independent protection circuitry is also provided. Please see the BQ79616-Q1 or BQ75614-Q1 data sheet for more details on each respective part.

Each EVM is equipped with precision measurement and synchronous communication to enable a controller to perform State of Charge (SOC) and State of Health (SOH) estimation. Highly-accurate cell voltages and a fast sampling time for the entire battery pack allows more efficient operation of battery modules and more accurate SOC and SOH calculations. Communication with stacked BQ79616EVMs is via an isolated daisy-chain differential bus. For the standalone BQ75614EVM, SOC and SOH are further assisted by an integrated current sense ADC.

Control a single EVM or multiple stacked EVMs using a PC-hosted GUI. Communication between the PC and the base device in a stack of BQ79616EVM (or a single standalone BQ75614EVM device) is via a USB2ANY UART interface. For a stack of BQ79616EVM devices, communication between all other EVMs in the stack occurs via the isolated, daisy-chain differential communication bus. The PC GUI allows configuration of the EVMs to monitor cells and other analog data channels, control balancing, and monitor details of any faults.