Power Electronics / Power Management


Battery monitoring IC

2 May 2012 Power Electronics / Power Management

STMicroelectronics has introduced a new battery monitoring ‘gas gauge’ for handheld applications. The STC3105 combines a small footprint with elevated measurement accuracy and miserly power consumption to increase battery runtime and lifespan in space-constrained portable gadgets.

The IC delivers high-precision measurement of the battery voltage and current in a 2 x 3 x 0,8 mm package. It uses open-circuit voltage and coulomb-counter methods to estimate the battery capacity and to supervise and track charge/discharge status. Accurate predictions of the battery state of charge and time-to-empty help avoid unnecessary recharging, extend operating time between charges, and lengthen the battery lifespan in portable applications.

The STC3105 boasts low supply current requirements – 60 μA typical – which also contribute to extending the battery runtime and lifespan. The power saving mode reduces current consumption in the IC, as well as enabling low standby power levels in the final application.

Integrating a programmable alarm output, the device can alert the system when the battery state of charge is below a certain level. Such embedded intelligence helps initiate appropriate power management actions when the battery is nearly empty without involving the system microcontroller, enabling the microcontroller to spend longer times in a sleep mode, decreasing the overall power consumption.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

DC-DC converters for railway applications
29 January 2020, Conical Technologies , Power Electronics / Power Management
Traco Power announced the release of the latest addition to its railway series converters. The THN 10WIR series is a family of ruggedised 10 Watt DC-DC converters for the highest reliability in harsh ...

Read more...
Highly robust IGBT gate driver
29 January 2020 , Power Electronics / Power Management
Power Integrations announced the launch of its automotive-qualified SID1181KQ SCALE-iDriver gate driver for 750 V-rated IGBTs. The new part expands the company’s range of auto-qualified driver ICs, following ...

Read more...
Power management/UPS HAT for Raspberry Pi
29 January 2020, iCorp Technologies , Power Electronics / Power Management
This Raspberry Pi power management and UPS HAT, made by Sixfab, ensures that the device is powered up and that the user has full control over its power supply. The uninterruptible power supply automatically ...

Read more...
V2X: The future of vehicle communications
29 January 2020, Avnet South Africa , Editor's Choice, Telecoms, Datacoms, Wireless, IoT
A recent report by Juniper Research forecasts that more than 62 million vehicles will be capable of vehicle-to-vehicle communication by 2023; up from just over 1,1 million in 2019.

Read more...
STM32 system-on-chip for LoRa
29 January 2020, Avnet South Africa , Telecoms, Datacoms, Wireless, IoT
Powering the search for sustainability through smart infrastructure and logistics, smart industry and smart living, STMicroelectronics has revealed the world’s first LoRa system-on-chip (SoC) for connecting ...

Read more...
EERAM memory solutions retain data at power loss
29 January 2020, Avnet South Africa , DSP, Micros & Memory
Microchip Technology announced a new family of Serial Peripheral Interface (SPI) EERAM memory products that offers system designers up to 25% cost savings over the current serial non-volatile ram (NVRAM) ...

Read more...
Brushless DC motor driver
29 January 2020, NuVision Electronics , Power Electronics / Power Management
The MP6650 from Monolithic Power Systems is a single-phase, brushless DC motor driver with integrated power MOSFETs and a Hall-effect sensor. The device drives single-phase brushless DC fan motors with ...

Read more...
4-switch buck-boost controller
29 January 2020, Altron Arrow , Power Electronics / Power Management
A common DC-DC converter problem is generating a regulated voltage when the input voltage can be above, below, or equal to the output - that is, the converter must perform both step-up and step-down functions. ...

Read more...
CCM/DCM flyback ideal diode
29 January 2020, NuVision Electronics , Power Electronics / Power Management
The MP9989, made by Monolothic Power Systems, is a fast turn-off, intelligent rectifier for flyback converters that integrates a 100 V MOSFET. It can replace a diode rectifier for higher efficiency and ...

Read more...
Low-noise electronic circuitry enables low-intensity light detection
29 January 2020, Vepac Electronics , Editor's Choice, Power Electronics / Power Management
When it comes to low-intensity light detection, performance requirements often lead to selecting devices with greater sensitivity than common photodiodes or even charge coupled devices (CCDs).

Read more...