BQ77915EVM-014: 3 to 5-Series Li-Ion Series Charger With Autonomous Cell Balancing

Summary

The BQ77915EVM-014 evaluation module (EVM) is a complete evaluation system for the bq77915 3-series to 5-series low-power protector for lithium-ion cells. The EVM includes one bq77915 and FETs to control current in a configuration typical for switching current in a lithium-ion battery pack. The circuit module includes one bq77915 integrated circuit (IC), a sense resistor, a thermistor, two FETs, and all other onboard components necessary to switch charge and discharge current.

The circuit module connects between a battery source and a pack load. In addition to the current and voltage applied to the module, the user can remove onboard jumpers to simulate overtemperature or under temperature conditions to observe FET control under different charge and discharge conditions. Balancing of unmatched cells can also be performed on the module.

Features:

3-series to 5-series lithium-ion protector with full suite of V/I/T protection functions
Low power consumption (8 µA typ in normal mode, 2 µA typ in hibernate mode)
Autonomous smart cell balancing
FETs to demonstrate current control

Specifications

Manufacturer	Texas Instruments
Category	Power Management
Sub-Category	Battery Chargers
Eval Board Part Number	296-50752-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Cell Type	Lithium Ion, Li-Ion
Configuration	3 ~ 5 in Series
Voltage In	3 ~ 22 V
Voltage Out	0 ~ 22 V
Current Out	4 A
Features	Cell Balancing Over Voltage Protection Shutdown, Enable, Standby Thermal Protection Under Voltage Protection, Brown-Out
Quiescent Current [Typical]	8 µA
Sleep Mode Current [Typical]	2 µA
Component Count + Extras	60 + 33
Application / Target Market	Drones Electric Vehicles Power Tools Power: Auxiliary Power Supply Robotics
Design Author	Texas Instruments
Main I.C. Base Part	BQ77915
Quiescent Current [Maximum]	15 µA
Sleep Mode Current [Maximum]	3 µA
Date Created By Author	2018-03
Date Added To Library	2019-01