Linear Technology's LTC 6803 is a second generation high
voltage battery monitor for hybrid/electric vehicle (HEVs), electric vehicles
(EVs) and other high voltage, high performance battery systems. The LTC6803 is
a complete battery measuring IC that includes a 12-bit ADC, a precision voltage
reference, a high voltage input multiplexer and a serial interface. Each
LTC6803 can measure up to 12 individual battery cells in series. The device's
proprietary design enables multiple LTC6803s to be stacked in series without
optocouplers or isolators, permitting precision voltage monitoring of every
cell in long strings of series-connected batteries. The LTC6803 follows the
LTC6802 with the same functionality and pinout, plus a number of significant
performance enhancements.
The maximum total measurement
error of the LTC6803 is guaranteed to be less than 0.25 percent from -40 to
125C. The LTC6803 offers an extended cell measurement range from -300mV to 5V,
enabling the LTC6803 to monitor a wide range of battery chemistries, as well as
supercapacitors. Each cell is monitored for undervoltage and overvoltage
conditions, and an associated MOSFET is available to discharge overcharged
cells. Added functionality is provided by an onboard 5V regulator, temperature
sensor, GPIO lines and thermistor inputs.
For long-term battery pack
storage, the current consumed by the integrated BMS can potentially unbalance
the cells. The LTC6803 addresses this concern with a standby mode that draws
less than 12uA. The power input of the LTC6803 is isolated from the stack,
allowing the LTC6803 to draw current from an independent source. When powering
from this input, the current draw on the pack is reduced to less than 1µA.
We looked at a number of sources to determine this year's greenest cars, from KBB to automotive trade magazines to environmental organizations. These 14 cars emerged as being great at either stretching fuel or reducing carbon footprint.
Researchers at MIT and Sandia National Labs have observed a reaction in lithium-air batteries that could help improve the design of these cells for electric vehicles and other applications.
Healthcare might seem to be an unlikely target application for the Internet of Things technology, but recent developments show small ways that big-data is going to make an impact on patient care moving into the future.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 3
Early in my career, I worked as a draftsman and remember the days of drawing on vellum with numbered pencils and Mylar with plastic lead. This was a fun experience in the sense that I ...
I've been using workstations for more than 10 years and love finding ways to get more performance from my system. With demanding professional applications that require more power each ...
A lasting memory from my first job as an engineer in an auto assembly plant is standing on hard concrete at six in the morning, vending-machine coffee clutched in hand, listening to ...
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is
To save this item to your list of favorite Design News content so you can find it later in your Profile page, click the "Save It" button next to the item.
If you found this interesting or useful, please use the links to the services below to share it with other readers. You will need a free account with each service to share an item via that service.
Tweet This
4 
