Power
Small isolated gate drivers enable next-gen power switches
Analog Devices has announced small form factor isolated gate drivers designed for the higher switching speeds and system size constraints required by power switch technologies such as SiC and GaN, while still providing reliable control over switching characteristics for IGBT and MOSFET configurations.
Servo drives for DC powered applications
Available from Mclennan, Applied Motion Products (AMP) have launched a new SV2Dx series servo drives, which are available in a comprehensive choice of control modes to suit use across a wide range of demanding motion control applications. With power output from 60-550W and up to 4.5Nm torque output when used with AMP´s matching J-series motors, these competitively priced servo drives combine performance and functionality for single- or...
GaN MMICs designed for S-band radar applications
Wide bandgap semiconductor technology company, Wolfspeed, has introduced two new GaN MMICs, the first 50V GaN devices specifically designed for S-band radar (2.7-3.5GHz) applications. These new 50V GaN MMICs enable radar systems designers to reduce time to market with a less costly, less complex, 50V power amplifier line-up, while delivering what it claims to be the most efficiency possible.
Packaged amplifiers offer high performance from DC to 27GHz
A new family of wideband plastic packaged and chip monolithic microwave integrated circuit (MMIC) devices has been announced by Microsemi. The products add to a growing portfolio of high performance wideband MMICs and include four plastic packaged low noise amplifiers (LNAs), MMA040PP5, MMA041PP5, MMA043PP4 and MMA044PP3; a wideband power amplifier (PA) chip, MMA053AA; and two plastic packaged switches, MMS006PP3 and MMS008PP3.
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.