1

FEATURES

DESCRIPTION

APPLICATIONS

RELATED DEVICES

bq76PL102

PowerLAN™ Dual-Cell Li-Ion Battery Monitor With PowerPump™ Cell Balancing

2

• Monitors up to Two Individual Cell Voltages

and Temperatures

The bq76PL102 PowerLAN dual-cell battery monitor

is part of a complete scalable battery management

• Part of a Complete Low-Cost Solution for

system for use with arrays of up to 12 Li-Ion

Battery Packs of up to 12 Series and One or

rechargeable cells. The bq76PL102 connects to one

More Parallel Cells (When Used With

or two cells in a series string, performs voltage and

bq78PL114).

temperature monitoring of each individual cell, and

• Advanced PowerPump™ Balancing

reports

these

parameters

over

the

PowerLAN

Technology Equalizes Cells in Li-Ion Battery

communication network. Together with a bq78PL114

Packs, Resulting in Longer Run Time and Cell

master-gateway battery controller, the bq76PL102

Life.

forms

a

complete

battery

monitoring

and

management

system

for

higher

cell-count

• PowerPump™ Cell Balancing Transfers

applications.

Charge From Cell to Cell During all Operating

Conditions – No Wasteful Current Bleeding or

Partitioning of the battery monitor function on a per

Associated Heat Buildup.

cell basis permits connection and measurement close

to the cell. This results in superior accuracy and

• Unique PowerLAN™ Isolated Communications

management over competing solutions. This scheme

Technology Permits Simultaneous

also facilitates the PowerPump cell balancing system,

Measurement of All Individual Cell Voltages in

a technique which actively balances capacities of

a Series String.

Li-Ion

batteries

without

the

excessive

heat

or

• Low Current Consumption:

limitations of bleed-balancing techniques.

–

<250

µA Active

The

bq76PL102

PowerPump

cell

balancing

–

<35

µA Standby

technology

uses

a

charge-transfer

methodology

which does not bleed off excess energy as heat, but

–

<1

µA Undervoltage Shutdown

instead moves energy dynamically from cell to cell as

• Connects Directly to Cells, No Resistive

needed. Balancing is performed during all battery

Dividers

operational modes – charge, discharge, and rest.

• Internal LDO Regulator for Support Circuitry

Balancing is automatically coordinated between all

cells on a PowerLAN system. PowerPump balancing

• Ultrasmall Footprint, 3-mm × 3-mm

technology results in longer run time and longer cell

• Millivolt Measurement Resolution Using

life.

Delta-Sigma A/D Converter

The PowerLAN communications architecture has

• Self-Calibrating Time Base – No Crystal

been engineered to provide robust communications in

Required When Used With bq78PL114

tough EMI/RFI environments while avoiding the

excessive power draw, high parts count, and elevated

cost of other solutions. PowerLAN permits easy

• Uninterruptible Power Supplies (UPS)

scalability using series connections of bq76PL102

dual-cell battery monitors. High-cell-count battery

• Portable Medical and Test Equipment

systems

of

up

to

12

series

cells

are

easily

• Electric Bikes and Mild-EV Battery Packs

constructed without complicated high-voltage cell

• Multicell Series Strings ≥ 5S

measurement restrictions.

The

bq76PL102

works

with

the

bq78PL114

master-gateway battery controller.

• bq78PL114 Master Gateway Battery Controller

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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

PowerPump, PowerLAN are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008–2009, 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.