(editor’s note: Intrigued by these power electronics problems? Have a question or another solution? Then click the “Read more” link and follow the conversation on EDAboard.com or log in to EDAboard and participate in the power electronics forum threads. Build a constant current circuit – I am building a circuit which will provide me a […]
Amplifier
Gate-driver ICs target 480-690 Vac apps
SCALE-iDriver galvanically isolated single-channel gate driver ICs now support IGBT blocking voltages up to 1700 V, which are typically used in 480 to 690 VAC line applications. They are ideal for industrial drives, 3-level power supplies/UPS and photovoltaic inverters, commercial EV and traction auxiliary equipment. 1700 V SCALE-iDriver ICs deliver a gate current of up […]
BLDC gate drivers, power MOSFETs take up little PCB space
Today Texas Instruments (TI) introduced two new device families that help reduce size and weight in motor drive applications. When used together, DRV832x brushless DC (BLDC) gate drivers and CSD88584/99 NexFET™ Power Blocks require as little as 511 mm2, half the board space of competing solutions. The DRV832x BLDC gate drivers feature a smart gate-drive architecture that […]
Small form factor isolated gate drivers enable higher switching speeds of new inverter architectures
Analog Devices, Inc. (ADI) today 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 (Silicon Carbide) and GaN (Gallium Nitride), while still providing reliable control over switching characteristics for IGBT (insulated gate bipolar transistor) and MOSFET (metal oxide semiconductor […]
GaN power amplifiers target applications operating between 2 GHz and 6 GHz
Analog Devices, Inc. today announced a pair of high-performance gallium nitride (GaN) power amplifier (PA) modules which offer one of the highest power-density levels in their class, thus minimizing size and weight of the subsystem. The HMC7885 and HMC7748 broadband modules target applications operating between 2 GHz and 6 GHz, including test and measurement, communications, […]
What are amplifier classes and their relation to power efficiency (Part 2)?
In Part 1, we looked at Class A, B, AB, C, and D amplifiers. These designations are standardized, fully defined, and widely recognized. Now we’ll look at a few other topologies which are less well known but also used. The Class G amplifier is similar to the Class AB amplifier except that is uses two […]
What are amplifier classes and their power efficiencies?
Amplifiers which must produce significant output power face challenges of performance and efficiency. The industry has some long-established designations for classes of amplifiers as well as some relatively new classes. First a look at the older but still widely used classes commonly known as A, B, AB, C, and D. The Class A amplifier provides […]
Top power electronics threads on EDAboard.com – November
(editor’s note: Intrigued by these power electronics problems? Have a question or optional solution? Then click the “Read more” link and follow the conversation on EDAboard.com or log in to EDAboard and participate in the power electronics forum thread.) Core (Inductor) selection for PFC – I am designing a PFC for my application and need […]
Reference boards help evaluate high-voltage fan motor drivers
ROHM has recently announced the availability of reference boards designed to evaluate its high voltage fan motor drivers that achieve greater efficiency and simplify inverter configuration in home appliances such as ceiling fans and ACs. Of the total power consumed worldwide, it has been noted that close to 50% is used to drive motors, and […]
Half-bridge drivers work with three-phase motor controllers
Infineon Technologies AG adds two power boards to the family of iMOTION™ Modular Application Design Kits (MADK). The two half bridge boards complement the compact and flexible evaluation system providing a scalable design platform for 3-phase motor drives in the range from 20 W to 300 W. The MADK aims at applications in the field […]