bq78PL116

www.ti.com

SLUSAB8B

– OCTOBER 2010 – REVISED FEBRUARY 2011

PowerLAN

™ Master Gateway Battery Management Controller

With PowerPump

™ Cell Balancing Technology

Check for Samples: bq78PL116

1

FEATURES

of Cells and MOSFETs With up to 4 Sensors

23

•

bq78PL116 Designed for Managing 3- to

•

Fail-Safe Operation of Pack Protection

16-Series-Cell Battery Systems

Circuits: Up to Three Power MOSFETs and

One Secondary Safety Output (Fuse)

– Support for LCD and Electronic Paper

Displays or EPDs

•

Fully Programmable Voltage, Current, Balance,

and Temperature-Protection Features

– Configurable for 11-A, 26-A, or 110-A

Operating Currents

•

External Inputs for Auxiliary MOSFET Control

•

Systems With More Than Four Series Cells

•

Smart Battery System 1.1 Compliant via

Require External bq76PL102 Dual-Cell

SMBus

Monitors

APPLICATIONS

•

SmartSafety Features:

•

Portable Medical Instruments and Test

– Prevention: Optimal Cell Management

Equipment

– Diagnosis: Improved Sensing of Cell

•

Mobility Devices (E-Bike)

Problems

•

Uninterruptible Power Supplies and Hand-Held

– Fail Safe: Detection of Event Precursors

Tools

•

Rate-of-Change Detection of All Important Cell

Characteristics:

DESCRIPTION

– Impedance

The bq78PL116 master gateway battery controller is

– Cell Temperature

part of a complete Li-Ion control, monitoring, and

safety solution designed for large series cell strings.

•

PowerPump Technology Transfers Charge

Efficiently From Cell to Cell During All

The bq78PL116 along with bq76PL102 PowerLAN

™

Operating Conditions, Resulting in Longer

dual-cell monitors provide complete battery-system

Run Time and Cell Life

control, communications, and safety functions for a

structure of three up to 16 series cells. This

– Includes User-Configurable PowerPump

PowerLAN

system

provides

simultaneous,

Cell-Balancing Modes

synchronized voltage and current measurements

•

High-Resolution 18-Bit Integrating Delta-Sigma

using one A/D per-cell technology. This eliminates

Coulomb Counter for Precise Charge-Flow

system-induced noise from measurements and allows

Measurements and Gas Gauging

the precise, continuous, real-time calculation of cell

impedance under all operating conditions, even

•

Multiple Independent

Δ-Σ ADCs: One-per-Cell

during widely fluctuating load conditions.

Voltage, Plus Separate Temperature, Current,

and Safety

PowerPump technology transfers charge between

cells to balance their voltage and capacity. Balancing

•

Simultaneous, Synchronous Measurement of

is

possible

during

all

battery

modes:

charge,

Pack Current and Individual Cell Voltages

discharge, and rest. Highly efficient charge-transfer

•

Very Low Power Consumption

circuitry nearly eliminates energy loss while providing

– < 400 μA Active, < 185 μA Standby, < 85 μA

true real-time balance between cells, resulting in

Ship, and

< 1 μA Undervoltage Shutdown

longer run-time and improved cycle life.

•

Accurate, Advanced Temperature Monitoring

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

PowerLAN, PowerPump, bqWizard are trademarks of Texas Instruments.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

© 2010–2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.