Page 38 - EE Times Europe Magazine | June2020

38 EE|Times EUROPE

Gate Driver Solutions Proliferate for Motor Control

Block diagram of the 2SC0435T (Image: Power Integrations)

components by up to 85% compared with of current required for each motor phase. It drives typical IGBT modules up to
conventional solutions, increasing reliabil- The motor feedback returns to the drive and, 600 A, 1,200 V or 450 A, 1,700 V. The
ity and reducing costs. The device offers a if necessary, to the controller. The drive uses 2SC0108T combines a complete two-channel
complete two-channel driver core with all this information to switch the rotor correctly driver core with all of the elements required
the required drive elements, including an and send reliable data about the position for driving, such as an isolated DC/DC con-
isolated DC/DC converter and short-circuit of the moving shaft. For this reason, servo verter and short-circuit protection as well as
protection as well as supply voltage moni- motors are considered “closed loop” and supply voltage monitoring. Each of the two
toring. Each of the two output channels is incorporate an encoder (feedback) that con- output channels is electrically isolated from
electrically isolated from the primary and tinually sends the position to the controller. the primary side and the other secondary
the other secondary channel. Power Integrations’ 2SC0106T dual- channel.
channel gate driver core, equipped with the Power Integrations’ broad portfolio of
SERVO MOTORS new SCALE-2+ chipset, is a high- highly reliable gate driver products, from ICs
The operating principle of servo motors is performance two-channel IGBT/MOSFET and driver cores to plug-and-play drivers,
similar to that of stepper motors, but there gate driver core for 1,200-V IGBTs in the provides a high level of integration along
are some fundamental differences to take 37- to 110-kW power range. The 2SC0106T with enhanced safety features and certified
into account. In conventional servo systems, drives 600- to 1,200-V IGBTs with collector isolation capabilities. ■
the controller sends signals to the motor currents up to 450 A and switches at fre-
drive via pulse/direction or analog position, quencies up to 50 kHz. Maurizio Di Paolo Emilio is a staff
speed, or torque commands. Next- The 2SC0108T is a new SCALE-2 dual- correspondent at AspenCore, editor of Power
generation controllers use a fieldbus struc- driver core that combines compact design Electronics News, and editor-in-chief of
ture. The drive then sends the right amount and high reliability with broad applicability. EEWeb.

JUNE 2020 | www.eetimes.eu