Power Electronics / Power Management


Rugged high voltage gate driver ICs feature sophisticated functions

27 July 2005 Power Electronics / Power Management

International Rectifier has introduced a series of high voltage IGBT control ICs with a sophisticated set of protection functions. In addition to these advanced functions, the company says that these devices feature high noise immunity with up to 30% fewer components in half the footprint compared to discrete opto-coupler or transformer-based solutions.

The series consists of 1200 V and 600 V gate driver ICs and current sense interface ICs for a variety of applications including inverter motor drives, general-purpose inverter circuits, switch-mode power supplies (SMPS) and UPS.

Power stages using IGBTs or MOSFETs must be protected from failures such as short circuits, over-current conditions and ground faults. In addition to protection circuits, the fault conditions must be detected, or sensed, in order to enable the protection functions. IR has designed its new line of driver ICs and sensor ICs to fill this requirement, while reducing component count and simplifying circuits.

There are five 1200 V gate drivers for industrial applications. For appliance motor drives and a wide range of general-purpose inverter circuits, these 1200 V HVICs are also available in 600 V versions.

Product range

The IR22381 is an analog, three-phase IGBT gate driver. With a (programmable) deadtime of 0,5 μs, the device is 10 times faster than comparable opto-coupler-based drivers. Also, it minimises temperature drift and changes in performance over time. An integrated de-saturation feature provides for all modes of over-current protection, including ground fault, shoot-through and short to supply rails protection. Soft shutdown is initiated in the event of an over-current condition followed by the turn-off of all six outputs. The output drivers have separate turn-on/turn-off pins with a two-stage turn-on output to achieve the desired IGBT dv/dt switching level. Voltage feedback provides accurate measurements.

The IR2277 and IR22771 are high speed, single-phase current sense interface ICs with synchronous sampling for motor drive applications. The current is sensed through an external shunt resistor which converts the analog voltage into a time interval through a precise dual ramp system. A digital PWM output is provided for DSP and ADC interfaces without additional logic. Maximum throughput is 40 kSa/s - suitable for up to 20 kHz asymmetrical PWM modulation, while a noise immune bi-directional level-shifting circuit is used to avoid false common-mode dV/dt noise up to 50 V/ns. The IR2277 provides both analog and PWM output, while the IR22771 provides PWM output.

The IR2214 and IR22141 are designed to drive single half-bridge circuits in power switching applications as well as three-phase 380 V a.c. circuits at up to 50 A@ 80°C. Unlike solutions using opto-couplers, these gate drivers deliver stability during their lifetime and include parameter matching, such as propagation delay for high- and low-side channels as well as deadtime insertion. Their low quiescent current on the high-side enables economical bootstrap supply topology. Fault feedback on IGBT de-saturation is included. Desaturation detection for both sides as well as an internal biasing resistor are included in the IR2214, while an active de-saturation diode bias is included in the IR22141. Input and output pins are 3,3 V CMOS-compatible to simplify microprocessor interfacing. Separate power and signal ground pins enable emitter shunt configurations to simplify low-side IGBT current sensing.





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...
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...
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...
Power management IC for battery products
Power Electronics / Power Management
The nPM1304 PMIC complements Nordic’s nPM1300 PMIC with a highly integrated, ultra-low power solution and precision fuel gauging for small size battery applications.

Read more...
Powering Innovation eBook: Changing what’s possible
Power Electronics / Power Management
This exclusive read, entitled ‘Changing what’s Possible,’ delves into how power dense Vicor modules enable many world-changing innovations across various sectors.

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