person_outline
Social Media

search

Power Management

Battery Safety: Do We Need New Regulations? stars

Even months later there's been no official report from Samsung on what caused the issues they were having with the Galaxy Note 7 batteries catching fire and exploding. However, a company by the name of Instrumental, which is a manufacturing tech company, has suggested that the reason for the very dangerous flaw was that there was no space allowed for swelling in the design of the battery. This suggestion has led some to consider whether or not safer standards and regulations on cell phones and battery designs need to be put into place.

Suspicious of the reported reason for the flaw, which was that there was an issue with one of the parts of the battery, Instrumental entirely deconstructed a Galaxy Note 7. In doing so, they were able to conclude that the phone’s rather aggressive design led to the battery explosions. As noted in a blog entry, Anna Shedletsky had this to say, “What we found was surprising: The design can compress the battery even during normal operation,” Shedletsky is Instrumental’s CEO, and founder.

40A µModule Regulator with 3D Stacked-Inductor Packaging Enhances Thermal Conduction for Cooler Operation

Linear Technology Corporation introduces the LTM4636, a 40A step-down µModule® switching regulator with 3D construction for quicker heat dissipation and cooler operation in a small package. By stacking its inductor on top of a 16mm x 16mm BGA package, the LTM4636 benefits from the exposed inductor as a heat sink, permitting direct contact with airflow from any direction to cool the device. The LTM4636 delivers 40W (12VIN, 1VOUT, 40A, 200LFM) with only 40°C rise over ambient temperature. Full-power 40W is delivered up to 83°C ambient and half-power 20W is supported at 110°C ambient.

KEMET Advances Capacitor Solutions for Wide Band Gap Semiconductor Power Systems

KEMET Corporation (NYSE: KEM), a leading global supplier of electronic components, announced today that it is introducing expanded versions of its commercial and automotive grade High Voltage C0G Ceramic capacitors to meet the needs of the growing Wide Band Gap semiconductor trend. KEMET is now offering case sizes 2824, 3040, 3640, and 4540 to increase capacitance up to 150 nF with voltages up to 2,000 V. With a low profile and aspect ratio, these devices exhibit low inductance and ESR versus frequency allowing for very high ripple current capability.

Intersil Expands Single-Chip USB-C Buck-Boost Battery Charger Family stars

Intersil Corporation (NASDAQ: ISIL), a leading provider of innovative power management and precision analog solutions, today introduced two new USB-C™ buck-boost battery chargers that support bidirectional power delivery in ultrabooks, tablets, power banks and other mobile products. The single-chip ISL9238 and ISL9238A battery chargers replace competitive two-chip solutions to reduce customer bill of materials (BOM) costs by up to 40%. Both ICs employ Intersil's patented R3™ modulation technology to extend battery life and deliver acoustic noise-free operation, superior light-load efficiency and ultra-fast transient response.

Fairchild Launches SuperFET III MOSFET Family with Best-in-Class Efficiency and Reliability

Better Efficiency, EMI and Ruggedness Make SuperFET III MOSFETs Ideal for High-Performance Products with Demanding Robustness and Reliability Requirements

Fairchild Semiconductor, now part of ON Semiconductor), today introduced its SuperFET® III family of 650V N-channel MOSFETs, the company’s new generation of MOSFETs that meet the higher power density, system efficiency and exceptional reliability requirements of the latest telecom, server, electric vehicle (EV) charger and solar products.

The SuperFET III MOSFET family combines best-in-class reliability, low EMI, excellent efficiency and superior thermal performance to make it an ideal choice for high-performance applications. Complementing its performance characteristics, its broad range of package options gives product designers greater flexibility, particularly with size constrained designs.

Quasi-Resonant PWM Controller from Diodes Incorporated Optimizes Efficiency in Power Adapter Applications

Diodes Incorporated (Nasdaq: DIOD), a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic, analog and mixed-signal semiconductor markets, today introduced the AP3301. This quasi-resonant (QR) PWM controller enables the implementation of high-performance, cost-effective power supplies that are capable of meeting DOE6/COC Tier 2 efficiency requirements at all load levels. Targeting the key market of AC-DC adapters for set-top box and gaming console applications, this controller also meets the auxiliary power requirements of ATX/BTX computer motherboards and is suited for use in open-frame switching power supplies.

Allegro Microsystems, LLC Introduces New Dual Full-Bridge PWM Motor Driver IC

Two Drivers in One Package Share Charge Pump Components to Save PCB Space

Allegro MicroSystems, LLC announces a new 40 V dual full-bridge driver capable of driving two DC motors with outputs rated up to 3.2 A. Allegro’s A5995 device includes fixed off-time pulse-width modulation (PWM) regulators for current control. Each DC motor can be controlled in forward, reverse, coast and brake modes with industry standard PHASE, ENABLE inputs. Fast or slow PWM current decay is selected via the MODE input. This new device is targeted at the consumer, industrial and office automation markets with end applications that include, laser, inkjet and label printers, copiers, vending, robot vacuums, and ATM machines.

Wide input Range 15W DC-DC Converters Have Six-Sided Shielding

TDK Corporation announces the introduction of the TDK-Lambda 15W CCG15S series of DC-DC converters, further extending the CCG product family. Operating over a 4:1 input range, these highly efficiency products are enclosed in a 1 inch by 1 inch six-sided shielded metal case. Applications include telecommunications, process control, broadcast, battery powered and test and measurement equipment.

STMicroelectronics Reveals High-Efficiency Wireless Battery-Charging Chipset for Smaller, Simpler, Sealed Wearables

A miniaturized wireless battery-charging chipset from STMicroelectronics saves space, simplifies enclosure design and sealing, and accelerates time to market for ultra-compact sports wearables, wellness monitors, medical sensors, and remote controllers. The combination of ST’s STWBC-WA charging-transmitter controller and STWLC04 wireless battery-charger receiver enables power transfers up to 1W with smaller coils than any other chipsets in the market: just 11mm diameter coils on the receive side and 20mm for the transmitter allow tinier, slimmer form factors. Power-transfer capability can be increased to 3W by using larger coils and a full-bridge circuit on the transmitter side. Eliminating any need for a conventional charging connector simplifies enclosure design and eases sealing to prevent contamination by dirt or moisture.

ROHM's Isolated Power Supply Control ICs for Industrial Inverters

No optocoupler or auxiliary winding contributes to greater miniaturization, power savings, and reliability

ROHM has recently announced the availability of isolated flyback-type DC/DC converter control ICs for inverters in high power industrial equipment such as FA/solar inverters and power storage systems.

Isolation is almost always built into electronic equipment to provide protection against shock and damage. High voltage, high power industrial applications (including power storage systems and solar inverters which are seeing increased adoption) are no exception, requiring even more stringent reliability demands due to the harsher temperature conditions and the need for continuous, long-term operation.

Subscribe to this RSS feed