Battery Power - Summer 2015 - (Page 25)

ICs & Semiconductors Intersil Announces Integrated Power Management ICs for Ultrabooks and Tablets Intersil Corp. has introduced a pair of highly integrated power management ICs (PMICs) that enable the credit cardsize motherboards for high-end ultrabook and tablet computers powered by two-cell Li-ion batteries. The single-chip ISL95908 PMIC delivers eight voltage rails optimized to support subsystem peripheral power requirements for new Intel IMVP8 platforms, and the single-chip ISL95906 provides eight power rails for VR12.6-compliant systems. The devices measure 5.5 mm by 5.5 mm, enabling PC motherboards that are 75 percent smaller than previously possible using discrete switchers, inductors and capacitors. The ISL9590x PMICs address the trend toward slimmer ultrabooks, tablets and 2-in-1 computers that offer more features and longer battery life. Both PMICs integrate a controller, power and driver MOSFETS, VTT LDO regulator, independent enable and power-good indicators, I2C interfaces, and fault protection/ monitoring for eight synchronous buck regulators. They deliver 90 percent efficiency and integrate more functionality, allowing designers to use fewer external components including smaller, low-profile inductors and capacitors. Now mobile computing OEMs only need three devices: PMIC, core voltage regulator and battery charger, to power up the CPU/GPU, battery and subsystem peripherals. The ISL9590x support the Intel and Microsoft Connected Standby standard, which provides an instant-on, alwaysconnected experience similar to smartphones. The Connected Standby low-power mode maintains Internet connectivity, email and applications while the system is asleep. Both PMICs employ Intersil's proprietary R4 modulation technology, which delivers high light-load efficiency, ultra-fast transient response, and seamless continuous-conduction mode (CCM) and discontinuous-conduction mode (DCM) transitions. TE Connectivity's MHP-TAM Series Offers Compact Thermal Protection for Lithium Batteries Used in Ultra-Thin Portable Consumer Electronics Battery applications designers are tasked with meeting increasingly stringent safety standards for ultra-thin notebooks and other portable consumer electronics powered by highcapacity lithium polymer and prismatic cells. In response, TE Connectivity's business unit, TE Circuit Protection, introduces the MHP-TAM series. The MHP-TAM device features a lowprofile (5.8 mm by 3.85 mm by 1.15 mm max.) package and a high (9 VDC) rating. The devices in the series offer a choice of two different levels of current-carrying capacity and multiple www.BatteryPowerOnline.com * New Products cut-off temperature ratings. The device provides a space-efficient thermal cutoff (TCO) solution that helps designers meet the demanding peak-current requirements of consumer products. Utilizing innovative MHP (metal hybrid PPTC) technology, the MHP-TAM device combines a bimetal protector in parallel with a PPTC (polymeric positive temperature coefficient) device. In battery applications, the MHP-TAM device helps provide resettable over-temperature protection to shut down the battery when a fault is detected. The device rests when the fault is removed. The devices in the MHP-TAM series feature different open temperatures, ranging from 72°C to 90°C (typical), which are appropriate for the battery market. They also offer two levels of hold currents: low-current (approximately 6 A at 25°C) and high-current (approximately 15 A at 25°C). The MHP-TAM series complies with the regulatory agency requirements of the most rigorous international quality and safety standards: UL, cUL and CB. Vishay Intertechnology 20 V Chipscale MOSFET Saves Space, Extends Battery Usage in Ultraportable Applications Vishay Intertechnology, Inc. has introduced a TrenchFET 20 V n-channel MOSFET designed to save space, decrease power consumption and extend battery usage in wearable devices, smartphones, tablets and solid-state drives. Offered in a chipscale MICRO FOOT package with a 0.54 mm maximum height, the Vishay Siliconix Si8410DB provides a low on-resistance for a 20 V device in a 1 mm square footprint. Optimized for use as a load switch, small-signal switch, and high-speed switch in power management applications, the Si8410DB features low on-resistance of 37 mΩ at 4.5 V, 41 mΩ at 2.5 V, 47 mΩ at 1.8 V, and 68 mΩ at 1.5 V. Compared with the closest competing devices in the CSP 1 mm square package, these ratings represent an improvement of 26 percent at 4.5 V, 32 percent at 2.5 V, 35 percent at 1.8 V and 27 percent at 1.5 V. Compared with devices in the DFN 1 mm square package, on-resistance is 32 percent lower at 4.5 V, 40 percent lower at 2.5 V, 48 percent lower at 1.8 V, and 43 percent lower at 1.5 V. The device's low on-resistance, ratings down to 1.5 V, and ± 8 V VGS provide a combination of safety margin, gate drive design flexibility and high performance for lithium ion battery-powered applications. The Si8410DB offers a low on-resistance per area of 30 mΩ-mm square, 28 percent lower than the closest competing 20 V MOSFET in a 1 mm square plastic package, to save space and reduce battery power consumption in mobile applications. The device's low on-resistance means a very low voltage drop at DC and pulse peak currents, so less power is wasted as heat. The combination of lower on-resistance and lower thermal resistance results in up to 45 percent and 144 percent lower temperature rise than the next-best devices in CSP and 1 mm square packages, respectively. Samples and production quantities of the Si8410DB are available now, with lead times of 13 weeks for larger orders. Summer 2015 * Battery Power 25 http://www.BatteryPowerOnline.com

Table of Contents for the Digital Edition of Battery Power - Summer 2015

Battery Power - Summer 2015
Table of Contents
Wearable Medical Devices Embrace Lithium Polymer Cells
Five Building Blocks of Self-Powered Wireless Sensor Nodes
Conference Preview: Battery Power 2015
Protecting Batteries that Protect Your Power System
Batteries
ICs & Semiconductors
Components
Chargers
Industry News
Conference Review: Battery Japan 2015
Calendar of Events
Marketplace

Battery Power - Summer 2015