Power
Devices use Gen9HV 50V base station optimised process
Ampleon has announced the launch of a series of LDMOS RF power transistors using its Gen9HV 50V LDMOS process. These devices are the first to use Ampleon’s latest 50V process, a node that has been optimised for use in cellular infrastructure applications up to 1GHz and delivers greatly increased efficiency and gain. These devices, enabling more than 57% efficiency and 18 dB power gain, and their 50V operation, make for a significantly ...
Battery simulation models for testing and calibration of BMS
A Hardware-in-the-Loop (HIL) Battery Cell Simulator package has been released by ETAS and Maplesoft which satisfies the highest demands for the test and calibration of Battery Management Systems. The solution is based on Maplesoft’s efficient, high-fidelity MapleSim battery model and ETAS’ high-precision Battery Cell Simulator (BCS) BCS-LABCAR. Suppliers of Battery Management Systems (BMS) face a number of challenges with regard to te...
Mixer offers 23.9dBm IIP3 in a tiny 3mm x 2mm package
Analog Devices, which recently acquired Linear Technology, has announced the LTC5553, a double balanced mixer providing best-in-class matched bandwidth capability from 3GHz to 20GHz. The mixer can be used either as an up- or downconverter. In addition, the LTC5553 delivers outstanding linearity of 23.9dBm IIP3 at 14GHz, and 21.5dBm at 17GHz. The device integrates an LO buffer requiring only 0dBm input drive, effectively eliminating an external hi...
Battery-less pacemaker harvests energy wirelessly
A wireless, battery-less pacemaker that can be implanted directly into a patient’s heart is being introduced by researchers from Rice University and their colleagues at the Texas Heart Institute (THI) at the IEEE’s International Microwave Symposium (IMS) in Honolulu. The internal components of a battery-free pacemaker introduced this week by Rice University and the Texas Heart Institute.
Silicon Carbide power modules break through long standing barriers
There’s a special, satisfying glow of accomplishment which designers feel when signing off on a high performance, high current (>100A) power module such as used in PWM inverters. There are so many competing factors to be balanced and tradeoffs to be made, starting with the choice of switching frequency.
Selecting DC-link capacitors in power converters
In applications from the simplest cell-phone charger to grid-tied inverters operating at hundreds of kW, power conversion schemes are used which incorporate an intermediate stage where energy is processed at DC. A ‘DC-link’ capacitor is fitted at this point to provide a low impedance path for high frequency switching currents and to provide energy storage.
IEEE 802.3bt PD controller achieves 99% efficiency
Analog Devices, which recently acquired Linear, has announced the LT4294 IEEE 802.3bt Powered Device (PD) interface controller for applications requiring up to 71W of delivered power. This new Power over Ethernet (PoE) standard – IEEE 802.3bt – increases the power budget to enable new applications and features, while supporting 10 Gigabit Ethernet (10GBASE-T) and maintaining backward compatibility with older IEEE 802.3af and...
Research alliance builds transistor for 5nm technology
IBM, its Research Alliance partners Globalfoundries and Samsung, and equipment suppliers have developed an industry-first process to build silicon nanosheet transistors that will enable 5nm chips. The details of the process will be presented at the 2017 Symposia on VLSI Technology and Circuits conference in Kyoto, Japan. In less than two years since developing a 7nm test node chip with 20 billion transistors, scientists have paved the way for 30 ...
Modular AC/DC power supplies meet medical and broadcast certifications
Modular AC/DC power supplies in the QM series by TDK-Lambda, are low acoustic noise 700 to 1200W supplies carry both medical and industrial safety certifications, and can be used in applications such as BF-rated medical equipment, test and measurement, broadcast, communications and renewable energy.
60V Low IQ synchronous step-down controller operates at 2.25MHz
Recently acquiring Linear Technology Corporation, Analog Devices has now announced the LTC7800, a synchronous step-down DC/DC controller that operates at up to 2.25MHz for reduced circuit size and increased power density. Its low 45ns minimum on-time enables 24VIN to 3.3VOUT conversions while switching at a fixed 2MHz, avoiding critical noise-sensitive frequency bands including AM radio.