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Freescale AEC-Q100 Qualified Intelligent Battery Sensor Now Available
Freescale Semiconductor today announced the availability of the industry's first general market AEC-Q100 qualified intelligent battery sensor that combines three measurement channels, a 16/32-bit MCU, and a CAN protocol module in a single package.
Designed to support a range of existing and upcoming battery types, both for automotive and industrial applications, the MM9Z1J638 battery sensor measures important battery parameters for monitoring state of health (SOH), state of charge (SOC) and state of function (SOF). This helps in predicting a potential failure early on.
The sensor's flexible four-cell front end architecture supports conventional 12V lead acid batteries as well as emerging battery technologies, such as 14V stacked cell Li-Ion, high voltage junction boxes, and 24V truck batteries.
Battery failure is one of the leading causes of vehicle breakdowns due to electrical system errors. Rising levels of electrical load in vehicles are placing increased strain on batteries as new, mission-critical requirements such as engine start-stop functionality become increasingly common. According to analyst firm Strategy Analytics, more than 52 million vehicles worldwide will support start-stop functionality by 2020. Start-stop requirements, together with others such as regenerative braking and intelligent alternator control, are driving demand for more precise sensing of the battery's state to provide early failure warnings.
"Our introduction of the industry's first single-package, automotive-qualified intelligent battery sensor with MCU and CAN components will help automakers cope with increasing algorithm complexity and data communication demands as cars become more connected and intelligent," said James Bates, senior vice president and general manager for Freescale's Analog & Sensors Group. "Also featuring integrated functional safety support, the new MM9Z1J638 battery sensor helps to support vehicle reliability even as automotive electrical system complexities increase."
Integrating a 16/32 bit S12Z microcontroller with 128K Flash, 8K RAM and 4K EEPROM together with a CAN protocol module, LIN interface and a three-channel analog measurement front end, the MM9Z1J638 battery sensor combines analog, processor and communication functions in a single package to help lower total bill of materials and accommodate advanced battery monitoring algorithms. The analog front end includes a two-channel, 16-bit sigma delta (ΣΔ) analog-to-digital converter (ADC) for simultaneous measurement of battery voltage and current, as well as a third 16-bit ΣΔ ADC for temperature monitoring using the integrated sensor and redundant measurement plausibility checks to support functional safety. The new Freescale product's input battery voltage measurement capability supports a wide range up to 52V directly to the device as well as much higher voltage battery configurations when used with external voltage dividers. Its low operating duty cycle enables operation in low-power mode for a majority of the time to help lower average system power consumption. The MM9Z1J638 is fully AEC-Q100 automotive qualified and designed to meet stringent automotive standards for ESD, EMC and zero defect quality levels.
Development
Support
Reference
designs
with
integrated
hardware
and
software
support
for
the
MM9Z1J638
battery
sensor
enable
quick
and
easy
development
of
new
applications,
including
energy
storage
systems,
uninterruptible
power
supplies,
hospital
equipment
and
alarm
systems.
Low-level
drivers
and
BMS
utility
libraries
are
available
to
support
custom
battery
modeling
and
shorten
development
cycles.
The
KIT9Z1J638EVM
evaluation
board
is
priced
at
$188.80(USD)
and
demonstrates
key
features
of
the
MM9Z1_638.
Reference
design
RD9Z1-638-4Li
is
priced
at
$220.80(USD)
and
demonstrates
product
capabilities
for
4-cell
Li-Ion
battery
applications.
Additional
Product
Details
·
16/32
bit
MCU,
128K
Flash,
8K
RAM,
4K
EEPROM
·
Integrated
CAN
protocol
module
·
3x
16-bit
ADC
for
current,
voltage
and
temperature
·
Support
for
up
to
four
cells
and
up
to
52V
inputs
·
Multiple
low-power
modes
·
Multiple
wake-up
triggers
(current,
temperature,
etc.)
·
Configurable
hardware
filters
·
Robust
LIN
physical
layer
·
7
x
7
mm
48-pin
QFN
package
Availability
and
Pricing
The
MM9Z1J638
battery
sensor
is
available
now
from
Freescale
and
authorized
distributors
worldwide
for
a
suggested
resale
price
of
$3.61(USD)
in
10,000-unit
quantities.
Please
contact
Freescale
Sales
for
additional
quantities.
Robust
and
reliable
analog
performance
The
majority
of
Freescale
analog
products
meet
critical
industrial
market
requirements,
including
operation
across
extended
temperature
ranges.
These
products
are
designed
and
manufactured
with
rigorous
process
controls,
and
qualified
using
industry
standard
methodologies
designed
to
yield
defect
rates
in
line
with
the
stringent
requirements
of
the
automotive
market.
The
MM9Z1J638
battery
sensor
is
included
in
Freescale's
product
longevity
program,
which
provides
assurance
of
supply
for
a
minimum
of
10
or
15
years
from
the
time
of
launch.
For
terms
and
conditions,
and
to
see
a
list
of
participating
Freescale
products,
visit
freescale.com/productlongevity.
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