Atmel has introduced its high-voltage technology AVR microcontroller that implements full 2-4 cell Lithium Ion smart battery monitoring and protection on a single chip.
Lithium Ion (Li-ion) is the battery chemistry of choice for high-end portable applications such as laptop PCs, cellphones and digital cameras, due to its high energy per weight and volume ratio, combined with a high load current. A Li-ion-based battery control system must control the chemical reaction and protect the system from harmful environmental conditions. Furthermore, the end-user expects the battery control system to deliver a reliable and accurate estimate of charge left. Atmel claims its ATmega406 single-chip smart battery device is the only product with everything needed to meet these challenges with highest accuracy and reliability at the lowest system cost.
The device includes an on-chip voltage regulator allowing the device to be powered from 4-25 V. It also features three 25 V-tolerant FET drivers for charge, discharge, and pre-charge, as well as on-chip FETs for cell balancing. To provide the most accurate estimate of charge left, the device has a Coulomb Counter ADC with an 18-bit output for battery current monitoring as well as a 12-bit ADC for individual cell voltage and temperature monitoring. Both ADCs use high-accuracy on-chip voltage reference. Battery protection is autonomous, providing the end-user with the best safety, as MCU-related issues such as a code runaway or a software bug do not affect it.
Battery protection is implemented as independent circuitry, not requiring the MCU to operate. If the device is exposed to an over-current or short-circuit condition, the autonomous battery protection will shut off the affected FET. Likewise, if any cell voltage drops to a potentially damaging voltage level, ATmega406 will automatically prevent further battery discharge by shutting down the discharge FET and going to a power-off mode.
The current resolution of the Coulomb Counter over the recommended 5 mΩ sense resistor is 0,67 mA, allowing measurements of more than ±30 A. Both ADCs benefit from a very accurate internal voltage reference, with less than ±0,1% error over temperature after calibration.
GigaDevice expands GD25UF Series density NuVision Electronics
DSP, Micros & Memory
GigaDevice has announced the expanded density range of its GD25UF series 1,2 V ultra-low power SPI NOR Flash, now spanning from 8 Mb to 256 Mb.
Read more...ARINC 429 line driver evaluation board ASIC Design Services
DSP, Micros & Memory
Holt Integrated Circuits have announced the release of the ADK-85104 Evaluation Board, a compact, ready-to-use platform designed to help engineers rapidly evaluate and characterise Holt’s HI-85104.
Read more...Highly integrated 24-channel mixed signal IC EBV Electrolink
DSP, Micros & Memory
Microchip Technology has announced the LX4580, a 24-channel mixed-signal IC designed to replace multiple discrete components with a single device that supports synchronised data acquisition, fault monitoring, and motor control.
Read more...Lower-power Thread and BLE connectivity iCorp Technologies
DSP, Micros & Memory
Espressif has released the ESP32-H21, a low-power wireless SoC aimed at Thread, Matter, Zigbee, and Bluetooth LE device designs.
Read more...Touch-enabled 32-bit MCU EBV Electrolink
DSP, Micros & Memory
Microchip’s PIC32CM PL10 microcontroller family expands the company’s Arm Cortex-M0+ portfolio, delivering a compact, low-power 32-bit platform designed for cost-sensitive embedded applications.
Read more...Compact 6 A automotive buck converter Altron Arrow
Power Electronics / Power Management
Delivering up to 6 A of continuous output current, the DCP0606Y from STMicroelectronics enables efficient regulation of low-voltage rails commonly used in modern vehicle electronics and industrial systems.
Read more...Build smarter with UNO Q Electrocomp Express
DSP, Micros & Memory
The Arduino UNO Q’s hybrid design combines a Linux Debian-capable microprocessor with a real-time STM32U585 microcontroller making it the perfect dual-brain platform for the next innovation.
Read more...Next-gen modules for rugged edge AI systems Altron Arrow
Computer/Embedded Technology
Designed for real-world edge deployments where systems do not sit still, SolidRun’s P100 COMx6 series targets mobile platforms as well as harsh, mission-critical environments.
Read more...Compact AI modules for imaging Otto Wireless Solutions
DSP, Micros & Memory
SIMCom has introduced two compact smart AI modules, the SIM8666 and SIM8668, designed to simplify the development of imaging-based IoT applications.
Read more...Compact Renesas MCU rapid development board Dizzy Enterprises
DSP, Micros & Memory
Built around the Renesas R7FA4M2AD3CFP microcontroller, the Clicker 4 board provides engineers with a ready to use solution for prototyping and testing applications that require reliable ARM based processing and flexible expansion.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version