19 November 2014
News
Power Electronics / Power Management
Linear Technology introduced the LTC3350, a supercapacitor charger and backup controller IC that includes all of the features necessary to provide a complete, standalone capacitor-based backup power solution.
Many applications require reliable, short-term uninterrupted power in the event of a mains power failure. Examples include data backup for solid state drives (SSDs) and non-volatile dual in-line memory modules (NVDIMMs), power fail alarms in medical and industrial applications, as well as a host of other ‘dying gasp’ power fail indicators.
The LTC3350 provides all PowerPath control, capacitor stack charging and balancing, and capacitor health monitoring to ensure that the backup system is capable of reliable operation. It features a wide 4,5 V to 35 V input voltage range and over 10 A of charge/backup current capability, as well as providing balancing and over-voltage protection for a series stack of one to four supercapacitors.
The IC’s synchronous step-down controller drives N-channel MOSFETs for constant current/voltage charging of the capacitor stack at up to 5 V per cell. In backup mode, the step-down converter runs in reverse as a synchronous step-up DC-DC to deliver power from the supercapacitor stack to the system supply to be backed up.
Integrated into the chip is an accurate, 14-bit analog-to-digital converter (ADC) which continuously monitors input and output voltage and current. In addition, the internal measurement system monitors parameters associated with the backup capacitors themselves, including capacitor stack voltage, capacitance and stack ESR (equivalent series resistance) to ensure adequate energy storage and power delivery during backup.
All system parameters and fault status can be monitored via a two-wire I2C interface, and alarm levels can be set to alert the system to a sudden change in any of these measured parameters.
Wi-Fi 6/BLE module enables rapid development Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Telit Cinterion has announced the WE310K6, a fully integrated, low-power module featuring dual-band, dual-stream Wi-Fi 6, and dual-mode Bluetooth/BLE.
Read more...From the editor's desk: Exciting times ahead? Technews Publishing
News
There are many subjects that excite me in this world, but two of the larger technical subjects are, firstly, renewable energy, and secondly, the idea of artificial intelligence as it continues to evolve ...
Read more...Microchip expands partnership with TSMC
News
Microchip Technology has announced it has expanded its partnership with TSMC to enable a specialised 40 nm manufacturing capacity at Japan Advanced Semiconductor Manufacturing.
Read more...Huge SA grid battery project
News
A standalone battery energy storage system (BESS) has won preferred bidder status under South Africa’s Energy Storage Capacity Independent Power Producer Procurement Programme (ESIPPPP).
Read more...Mouser sponsors NCP Cup 2024
News
The NXP Cup is an EMEA-based autonomous car competition, presented by NXP Semiconductors, which is designed to provide students with real-world experiences in autonomous vehicle programming and building.
Read more...TrinaTracker brings its smart solar tracking to SA
News
The Vanguard 1P is designed to provide customers with trackers that combine suitability for flat terrain, together with outstanding system stability and reliability, quick installation, and flexible external compatibility.
Read more...Invertek produces its three millionth drive iTek Drives
News
Invertek Drives Ltd, a global manufacturer of variable frequency drive (VFD) technology, has celebrated producing its three millionth VFD, just three years after its two-million milestone.
Read more...Analysis of switch-mode power supply: inductor violations Altron Arrow
Editor's Choice Power Electronics / Power Management
Common switch-mode power supply (SMPS) design errors are discussed, and their appropriate rectification is specified, with details on complications that arise with the power stage design of DC-DC switching regulators.
printer friendly version