.gif)
.gif)
New Products
January 19, 2012
Quantance Unveils Third Generation, Single-Chip, Envelope Tracking Solution
Quantance Inc. announced the Q845 ET power supply that enables power amplifier (PA) efficiency to reach theoretical limits and dramatically increases PA peak transmit power. This single-chip product is the third generation implementation of the company’s qBoost™ technology, which provides the response time equivalent of a 400MHz switcher for ET systems, over 100 times faster than any other mobile ET power supply solution available today. This ultra-fast performance, along with a more streamlined architecture and a tiny chip footprint, sets a new industry standard for size, cost and integration simplicity.
The Q845 plans compatibility with upcoming standards-based ET control and envelope interfaces. This compatibility enables the Q845 to be openly and seamlessly integrated into any 4G/LTE baseband and transceiver chipset platform targeted for use in tablets, smartphones, data cards and other mobile high-speed data devices. The Q845 can be used for ET in these devices to dramatically enhance PA efficiency and increase PA peak power to ensure robust 4G/LTE operation, including faster data speeds, reduced battery current and extended data coverage.
The need for effective ET solutions in chipset reference designs has grown dramatically in the past year, in direct relation to the explosive growth in high-speed data and the mass-market deployment of LTE devices. ET solutions provide the 4G/LTE PA efficiency and transmit power improvements critical to ensure LTE performance, and many chipset providers are already planning to integrate ET solutions in their latest platforms.
"When we architected the Q845, we combined Quantance’s unique patented approach to ultra-fast power supply design into a smaller, more efficient package, and made sure we focused on industry standards compatibility," said Vikas Vinayak, Quantance’s CEO and co-founder. "The new design will integrate nicely into baseband and chipset reference designs, enabling those companies to provide a proven ET solution that gives the best possible PA efficiency and highest PA transmit power output available in the industry today."
The Q845 uses a patented combination of switching and linear power supplies to efficiently deliver a precisely controlled voltage to the PA, thus optimizing its performance. For increased peak power and high power efficiency, Q845 operates in ET mode, changing the PA voltage instantaneously to track the modulation envelope of the transmitted signal. To maintain efficiency in mid- and low-power PA operation, the Q845 transitions seamlessly to its average power tracking (APT) mode, where the voltage is changed at a slower rate, yet still maintains the PA at its peak efficiency.
Opinion: Bridging the Gap between Off-Grid and Grid-Tied Systems with a Grid-Hybrid Approach
Evaluation kits are available today. Sampling begins in Q1 2012.
Share this story
Send via E-mail
Post to Twitter
On the Web:
White Papers
March 11, 2013
Power Modules for Charger Applications
Sponsored by Vincotech
February 27, 2013
The Adaptive Cell Converter Topology Enables Constant Efficiency Over Universal Input AC Line in Front-End, High-Density Power Factor Correction Applications
Sponsored by Vicor Corp.
February 27, 2013
From 48 V direct to Intel VR12.0: Saving "Big Data" $500,000 per datacenter, per year
Sponsored by Vicor Corp.
More White Papers
- Ericsson Delivers 750W Quarter-Brick using Proprietary HRR Topology
- IXYS Introduces an Anode-Gated Thyristor Technology Platform
- Dreamliner Nightmares a Factor in New UL Standards Activities for Li-ion Batteries
- Ideal Diode Bridge Controller Minimizes Rectifier Heat and Voltage Loss
- Siemens Installing Regenerative Energy Storage Unit on Light Rail Line
- Silicon Labs acquires Energy Micro for IoT, Smart Energy and Portable Electronics
- NXP Brings High Efficiency to 12V MR16 Lamps with Dimmable LED Controller
- Ultra-Compact High-Efficiency Power Supplies for Automotive Applications
- Curtis Industries Acquires California-based Tri-Mag
- Convection-Cooling Eliminates Fan Maintenance and Audible Noise in 250W Power Supplies
- Siemens Installing Regenerative Energy Storage Unit on Light Rail Line
- Single-Stage LED Drivers Deliver Dimming and Thermal Protection with Lower BOM Cost
- Convection-Cooling Eliminates Fan Maintenance and Audible Noise in 250W Power Supplies
- Ericsson Delivers 750W Quarter-Brick using Proprietary HRR Topology
- Dreamliner Nightmares a Factor in New UL Standards Activities for Li-ion Batteries
- GE Intros Megawatt UPS Global Platform with Industry-Leading Efficiency
- Dow Corning adds Thermal Management Options Optimized for Electronics Applications
- ABB Demonstrates Technology to Power Flash Charging Electric Bus in 15 Seconds
- Power-One Announces New Open-Frame Products for Industrial and Medical Applications
- VACUUMSCHMELZE Reduces Need for Rare Earth Elements in Synchronous Motors
- Green Building Power Forum 2010: Fujitsu Components America
- Darnell's Digital Power Forum 2009: CUI Incorporated
- Green Building Power Forum 2010: EMerge Alliance
- Green Building Power Forum 2010: Anderson Power Products
- Green Building Power Forum 2009: Independence Station
- Darnell's Digital Power Forum 2009: Coilcraft
- Darnell's Digital Power Forum 2009: Champs Technologies
- Darnell's Digital Power Forum 2009: EXAR Corporation
- Darnell's Digital Power Forum 2009: PMBus
- Darnell's Digital Power Forum 2009: Power Plaza
Design Features
October 22, 2012
Energy Efficiency with Class D Amplifier Modules
Class-D switching amplifiers are helping audio designers create personal multimedia devices and home audio/visual systems that demonstrate how compact and stylish equipment can also deliver high sound quality and high audio output power. The key to this breakthrough, providing freedom from the large and bulky boxes housing traditional audio products, lies in the class-D amplifier’s high energy efficiency, which is typically around 90%. This allows designers to reduce or eliminate heatsinks as well as using smaller-sized PCBs and smaller components such as transformers, connectors and power supplies.
Design Features
October 8, 2012
The Role of Hall Effect Sensors in Power Distribution Infrastructure
Power distribution units (PDUs) form an essential part of modern computing and data communications hardware. They provide multiple outputs for transferring electrical power with maximum efficiency, controlling the power capacity and safeguarding against the possible causes of supply interruption. With an ever increasing need from tech savvy consumers for higher data throughput and greater quantities of data storage capacity, as well as tough international legislation now governing CO&sub2; emissions, the demands being placed on these units are proving challenging for engineering teams to satisfy.
Product Focus
August 13, 2012
The Year in AC-DC Power Supply Technology
The past year witnessed significant new product releases, technological developments, and industry news related to the field of AC-DC Power Supply technology.