Go to GlobalSpec.com Home
Toolbar   The Engineering Toolbar
The Ultimate Resource for Engineering and Technical Research. (Learn More)

Determining MOSFET Driver Needs for Motor Drive Applications

From Microchip Technology, Inc.
 

 
Electronic motor control for various types of motors represents one of the main applications for MOSFET drivers today. This application note discusses some of the fundamental concepts needed to obtain the proper MOSFET driver for your application. The bridging element between the motor and MOSFET driver is normally in the form of a power transistor. This can be a bipolar transistor, MOSFET or an Insulated Gate Bipolar Transistor (IGBT). In some small Brushless DC motor or stepper motor applications, the MOSFET driver can be used to directly drive the motor. For this application note, though, we are going to assume that a little more voltage and power capability is needed than what the MOSFET drivers can handle. The purpose of motor speed control is to control the speed, direction of rotation or position of the motor shaft. This requires that the voltage applied to the motor is modulated in some manner. This is where the power-switching element (bipolar transistor, MOSFET, IGBT) is used.
Product Announcements
Teledyne Relays - Commerical DC Solid-State Relay
Teledyne Relays introduced the Series S60DC40 commercial DC solid-state relay for switching high-power DC loads. This device features the latest-generation MOSFET technology as well as an innovative... (read more)
Radyne - An Inductotherm Group Company - Induction Power Supplies
Radyne delivers the very best induction in induction power supplies in the industry. From 20Hz SCR to 200 kHz IGBT units, from 100kHz to 450KHz, 800kHz MOSFET Systems through to 27mHz Transistor RF... (read more)
ROHM Semiconductor, USA LLC - High-efficiency DC Input H-bridge PWM Drivers
ROHM Co., Ltd. completed the development of the BD6221 H-bridge driver LSI for brush-commutated motors featuring low power consumption for high-efficiency motor driving. ROHM's new H-bridge driver LSI... (read more)
PERFORMANCE CONTROLS, INC.® - DCD Servo Drive for Battery Operated Applications
PERFORMANCE CONTROLS, INC. ® announces the DCD Series, a family of digital servo drives that can be customized to optimize the performance of DC motors. The utilization of a high performance Digital... (read more)
Ever Elettronica Group - ASIC EEA001 Enhanced micro-stepping controller
The ASIC EEA001 is a complete controller of enhanced, high performance, drives for stepping motors integrating the functions of sequencer and power stages control and protection against overcurrent,... (read more)
PERFORMANCE CONTROLS, INC.® - ACD Servo Drive for Battery Operated Applications
PERFORMANCE CONTROLS, INC. ® announces the ACD Series, a family of digital servo drives that can be customized to optimize the performance of Induction and BLDC motors. The use of a high performance... (read more)
Topics of Interest
There are many MOSFET technologies and silicon processes in existence today, with new advances being made every day. To make a generalized statement about matching a MOSFET driver to a MOSFET based on... (Read More)
S. Yuvarajan, Ph.D. Department of Electrical Engineering, North Dakota State University, P.O. Box 5285, Fargo, , North Dakota , USA 8.1 Introduction The efficiency, capacity, and ease... (Read More)
Reviews the characteristics and technical requirements of using an NEC high speed optocoupler to gate drive an IGBT or Power MOSFET. (Read More)
As described in Chapter 3, all DC/AC pulse-width-modulation (PWM) inverters are treated as a first-order-hold (FOH) element in digital control systems. We will discuss this model in various circuits... (Read More)
Inverter systems have advanced over the years and are the major area contributing to advances in system reliability and efficiency. The basic design is a simple bridge switching circuit (see Fig. (Read More)