部落格:氮化鎵技術如何擊敗矽技術
Term: Motor Drive
4 post(s) found

四月 13, 2023

基於氮化鎵元件的音頻放大器 - 音頻功放的最新技術

Renee Yawger, Director of Marketing

傳統上,發燒友一直看不起D類音頻放大器,因為開關電晶體從未實現具備足够開環綫性度的放大器以滿足最挑剔的聽衆的需求。隨著氮化鎵電晶體和積體電路的普及,設計人員現在可以用行銷標題為“達到THD+N性能目標和減少瞬態互調失真,實現微妙的溫暖感和添加色彩,享受最佳的聆聽體驗”。

三月 04, 2022

Efficient Motor Drive Performance at Low Cost for e-bikes, Drones, and Robotics with GaN FETs

Marco Palma, Director of Motor Drives Systems and Applications

Mobility is a driving factor in all economies. Electro mobility (or e-Mobility) is a clean and impactful way of keeping the gears of commerce grinding without contributing to the environmental stresses of inefficient motors or fossil fuel burning engines that cause damage to our planet. There is an ever-increasing demand for highly efficient and compact motor drive designs. EPC’s GaN-based motor drive reference designs for eMobility applications are in development to jump-start the competitive and environmentally friendly alternatives that support this trend.

九月 12, 2019

Harnessing the Power of GaN for Motor Drives – Servo drives, robotics, drones

Renee Yawger, Director of Marketing

With advancements in motor technology, power densities have increased; motors are built in smaller form factors and designed for higher speeds, and higher precision, which requires higher electrical frequencies.

3-phase brushless DC (BLDC) motors are compact for their power ratings, can be precisely controlled, offer high electro-mechanical efficiency, and can operate with minimal vibration when properly controlled. These motors are increasingly or exclusively used in precision applications like servo drives, robotics, such as surgical robots, and drones, such as quadcopters. To keep current ripple within a reasonable range, these motors – given their low inductance – require switching frequencies up to 100kHz. A FET that can operate efficiently at high frequency is required to minimize losses and offset the torque ripple in the motor which creates vibrations, reduces drive precision and decreases efficiency.

十一月 14, 2018

eGaN FETs and ICs Bring Precision Control to Surgical Robots

Michael de Rooij, Ph.D., Vice President, Applications Engineering

Minimal invasive surgery using surgical robots gives unprecedented control to surgeons looking to achieve the next level of precision, thereby reducing risk and trauma to the patient and speeding recovery. Many motors are required to control the various robotic appendages, such as arms, joints, and tool control, that give the surgical robot the required degrees of freedom (DOF) and dexterity to perform extremely delicate tasks. Weight and size of motor control circuitry are thus important factors in the design of such robots as they directly impact the size of the motor that manipulates the robot’s appendages during surgery.

The motor of choice for robotic surgery is the 3-phase brushless DC (BLDC) motor These motors are compact for their power rating, can be precisely controlled, offer high electro-mechanical efficiency, and can operate with minimal vibration when properly controlled. The choice of motor voltage lies in the range of 24 V to 48 V with balancing power conductor thickness and weight with insulation thickness and stiffness for optimum performance and dexterity being the determining factors.