Power Electronics / Power Management


Dual gate drivers simplify SiC and IGBT switching circuits

26 April 2022 Power Electronics / Power Management

Two new dual-channel, galvanically-isolated gate drivers for IGBTs and silicon-carbide (SiC) MOSFETs from STMicroelectronics promise to save space and ease circuit design in high-voltage power conversion and industrial applications.

The STGAP2HD for IGBTs and STGAP2SICD for SiC MOSFETs leverage ST’s latest galvanic isolation technology to provide 6 kV transient voltage capability in an SO-36W wide-body package.In addition, ±100 V/ns dv/dt transient immunity prevents spurious turn-on in electrically noisy operating conditions. The devices can deliver a powerful gate-control signal of up to 4 A, with dual output pins for extra flexibility in gate driving allowing for independent adjustment of turn-on and turn-off times. The active Miller clamp prevents gate spikes during fast commutation in half-bridge topologies.

Circuit protection features include thermal protection, a watchdog for safe operation and under-voltage lockout (UVLO) per channel to prevent start-up in a dangerous low-efficiency mode. The STGAP2SICD has a raised UVLO threshold voltage optimised for the needs of SiC MOSFETs.

Each device has an iLOCK pin for turning on both channels simultaneously in dual low-side and asymmetrical half-bridge applications. There is also interlocking to prevent shoot-through currents in conventional half-bridge circuits. Both drivers are rated for voltages up to 1200 V on the high-voltage rail and have an input-to-output propagation time of 75 ns with high PWM accuracy.

With dedicated shutdown and brake pins and a standby pin for power saving, these new gate drivers target applications such as power supplies, drives, inverters, welders and chargers. In addition, input pins compatible with TTL and CMOS logic down to 3,3 V simplify connection to a host microcontroller or DSP.


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

The role of bidirectional charging in the evolving energy landscape
Avnet Silica Power Electronics / Power Management
As reliance on renewable sources like wind and solar continues to grow, the need for efficient energy flow and storage solutions has become more critical than ever.

Read more...
MCU for noisy environments
EBV Electrolink DSP, Micros & Memory
The MCX?E24X is a high-performance microcontroller family from NXP, engineered for industrial, automotive-like, and energy-focused environments.

Read more...
How to calculate a buck converter’s inductance
Power Electronics / Power Management
In the buck circuit, the inductor design is a key element that is closely related to system efficiency, the output voltage ripple, and loop stability.

Read more...
High-current EMI filters
Accutronics Power Electronics / Power Management
TDK has introduced 20 and 40 A, 80 V DC board-mount EMI filters, reducing differential mode conducted emissions for switching power supplies with high input current requirements.

Read more...
Isolated SMD DC-DC converters
iCorp Technologies Power Electronics / Power Management
MinMax has launched a series of isolated SMD DC-DC converters, the MSU01 series delivering 1 W, while the MSU02 series offers 2 W output.

Read more...
Next-gen power meter
Electrocomp Express Power Electronics / Power Management
The VT-PWR-LV is a next-gen Vista Touch power meter from Trumeter for single, split, and three-phase systems.

Read more...
Advanced PMIC for high-performance AI applications
ASIC Design Services Power Electronics / Power Management
Microchip Technology has announced the MCP16701, a Power Management Integrated Circuit (PMIC) designed to meet the needs of high-performance MPU and FPGA designers.

Read more...
New SiC power MOSFET
Future Electronics Power Electronics / Power Management
STMicroelectronics’ SCT012H90G3AG is a robust, automotive-grade SiC MOSFET, engineered for demanding power electronics, featuring a 900?V drain-source voltage and exceptionally low on-resistance of 12?mO at 60?A.

Read more...
Chip provides concurrent dual connectivity
EBV Electrolink Telecoms, Datacoms, Wireless, IoT
The IW693 from NXP is a 2x2 dual-band, highly integrated device that provides concurrent dual Wi-Fi 6E + Wi-Fi 6 and Bluetooth connectivity, supporting four different modes.

Read more...
Fundamental motor control design challenges and solutions
Power Electronics / Power Management
Mouser Electronics has announced a new eBook in collaboration with Qorvo, featuring industry experts providing key insights into methods, power efficiency and integration solutions available for motor control applications.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved