Analog Devices: 35V hot swappable supercapacitor backup power controller

first_imgAnalog Devices announces the Power by Linear LTC3351, a supercapacitor charger and backup power controller IC that includes hot swap front-end protection and all the features necessary to provide a complete, standalone capacitor-based backup power solution. The LTC3351’s integrated hot swap controller and circuit breaker use N-channel MOSFETS to provide a low loss power path from the input to the output, plus foldback current limiting to reduce inrush current. The device enables reliable short term uninterrupted power in the event of a main power failure for applications such as solid-state drives and nonvolatile dual in-line memory modules (NVDIMMs) data backup, power fail alarms in medical and industrial applications and “dying gasp” power fail indicators. The LTC3351 provides PowerPath control, capacitor stack charging and balancing, protection and capacitor health monitoring. Other applications include high current 12V ride-through supplies and short term uninterruptible power supplies for servers, mass storage and high availability systems.The LTC3351 features a 4.5 to 35V input voltage range and over 10A of charge/backup current capability.  The device also provides balancing and overvoltage protection for a series stack of one to four supercapacitors. The LTC3351’s synchronous step-down controller enables constant current/constant voltage charging of the capacitor stack at up to 5V 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. The hot swap controller provides programmable UV/OV thresholds, PCIe compatible start-up timing and a precision threshold /RETRY input.The LTC3351 includes an accurate 16-bit 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.  By monitoring the actual capacitance of the backup supercapacitors, the LTC3351 provides longer capacitor life by enabling the system to set the capacitor voltage to a minimum value while ensuring the required backup energy is maintained.  All system parameters and fault status can be monitored via a 2-wire I2C interface, and alarm levels can be set to alert the system to a sudden change in any of these measured parameters.The LTC3351 is available in a thermally enhanced 44-lead, low profile (0.75mm) 4 x 7mm QFN package. The device operates over a –40 to 125°C junction temperature range and is available from stock.Share this:TwitterFacebookLinkedInMoreRedditTumblrPinterestWhatsAppSkypePocketTelegram Tags: Chips & Components Continue Reading Previous Wibu-Systems and Winbond to highlight trusted computing at Embedded WorldNext TI introduces educational robot TI-Innovator Roverlast_img read more

World T20: Harmanpreet happy with semifinal berth but demands more from Team India

first_imgIndia have registered three convincing wins out of three matches in the ICC Women’s World T20 but captain Harmanpreet Kaur still wants her team to keep improving in every aspect.India crushed Ireland by 52 runs on Thursday to qualify for the World T20 semi-finals for the first time in eight years.After posting a decent total of 145 for 6, India’s spinners maintained tight leash on Irish women restricting them to 93 for 8 in 20 overs.ICC Women’s World T20: Clinical India thrash Ireland to reach semi-finalsCourtesy their third win, India now have six points and are assured of a last-four spot along with Australia (6 points from 3 games) with New Zealand, Pakistan and Ireland already even before their campaign could officially end.”Happy to qualify into the semis. But a lot of areas to improve. It’a a short format, so sometimes when your main bowler doesn’t bowl according to plan, so you need other bowlers to bowl. That’s why Jemmy and I bowled today,” Harmanpreet said at the post-match presentation.India Women vs Ireland Women: Match HighlightsThe spinners Radha Yadav (3/25), Deepti Sharma (2/15), Poonam Yadav (1/14) and skipper Harmanpreet Kaur (1/10 in 4 overs) picked wickets at regular intervals although India’s batting performance left a lot to be desired.Ireland were never in the chase conceding as many as 65 dot balls (nearly 11 overs).Once Deepti got the wicket of Gaby Lewis (9) with an off-break and Poonam’s leg-break saw the end of Clare Shillington (23) stumped by Taniya Bhatia, Ireland had no chance whatsoever.A comfortable win for India set up by a Mithali Raj fifty ensured they will progress to the #WT20 semi-finals in Antigua.#INDvIRE report and highlights https://t.co/L4ruo5hzwm pic.twitter.com/69NMYgXK9aadvertisementICC World Twenty20 (@WorldT20) November 16, 2018″To win the WT20, we need to be aggressive in the field. And today, we didn’t bat according to our plans. Same with the bowlers, so need to improve in those areas,” Harmanpreet added.Earlier, India rode on player-of-the-match Mithali Raj’s painstaking 17th half-century to post a below par total but that proved to be much for the Ireland women’s team.Promoted to open the batting, veteran Mithali (51 off 56 balls) added 67 runs in 10 overs with Smriti Mandhana (33, 29 balls) but the innings never gained required momentum on a track that remained a bit damp due to overnight showers.The rest of the batters found it hard to keep the scoreboard ticking and fell cheaply in the quest for quick runs. Barring Mithali and Mandhana, the other batters managed a combined total of just 50 runs with 11 runs coming from extras but that proved to be enough against a clueless Irish side.India will next face Australia in a dead-rubber game as both teams have qualified for the semis but Harmanpreet is not someone to drop the ball in such a scenario and wants her team to play aggressive cricket against the Southern Stars.”Against Australia, we need to be aggressive. If you want to win against them, you need to be aggressive,” Harmanpreet concluded.Also Watch: It’s one of weakest teams vs one of strongest, says Harbhajan Singhlast_img read more