Robust 1200 V control ICs

14 July 2004 Power Electronics / Power Management

International Rectifier's new IR2214 and IR22141 devices are 1200 V-rated high voltage integrated circuits (HVICs) for industrial motor drive control. They can be used as a single-part solution in high voltage industrial systems for protection circuits as well as high- and low-side switching. Other devices rated at lower voltages typically use several components and bulky opto-couplers to accomplish the same switching and protection functions, says IR.

These half-bridge gate driver ICs are designed specifically for 400 V a.c., three-phase AC induction motor drives using a 550 V bus as well as brushless DC motors both from 10-20 hp. They simplify motor control design by integrating protection circuitry and eliminating the need for customised programming of protection algorithms. Both devices are the same, but the IR22141 includes a built-in active bias circuit that reduces external filtering. Output capability is 3 A for high voltage, high current IGBTs, MOSFETs and integrated power modules.

Both ICs include full soft-shutdown motor drive protection, detecting any de-saturation condition or under-voltage supply and sending fault feedback to the controller. Soft over-current shutdown avoids power node over- and under-shooting, protecting switching devices from damage. Special features include dedicated pins to trim turn-on, turn-off and soft shutdown switching time and synchronisation of the fault when used in three phase bridge circuits.

Other benefits include a full range rail-to-rail output stage that allows up to 20 V gate drive, which provides a larger safe operating area (SOA), compared to usual devices with 18 V gate drive capability. In addition, the under voltage lockout with hysteresis minimises the effects of power supply ripple and transients for safe gate drive and prevents IGBT overheating. Separate signal and output stage ground pins are included for emitter/source current sensing, matched delay outputs enable accurate switching control and the 3,3 V CMOS logic interfaces are compatible with most microcontrollers.

Further reading:

ABB’s Mission to Zero drives South Africa’s energy transition
ABB Electrification Products Power Electronics / Power Management
ABB Electrification is charting a bold path towards a net-zero future with its Mission to Zero programme, a blueprint that combines energy efficiency, electrification, and digital innovation to accelerate the transition to clean energy.

Read more...

---

Energy harvesting using a battery-less IoT system
NuVision Electronics Editor's Choice Power Electronics / Power Management
Energy Harvesting plays an essential role in the foundation of ambient IoT, a new generation of ultra-low power connected devices that operate by drawing energy from their environment instead of relying on traditional batteries.

Read more...

---

Driving power, defining performance
Future Electronics Power Electronics / Power Management
Vishay’s portfolio of inductors, current sense resistors, and MOSFETs provides a comprehensive solution for intelligent power management.

Read more...

---

Battery simulator module simplifies BMS testing
Test Dynamics Power Electronics / Power Management
The PXI/PXIe solution from Pickering Interfaces offers a scalable, modular design for faster development cycles, lower total cost of ownership, and improved safety.

Read more...

---

DC PSU: The cornerstone for efficient solar-storage systems
Vepac Electronics Power Electronics / Power Management
PV energy storage systems are evolving and DC power supplies, with their technical characteristics that are naturally compatible with new energy, have become a key carrier for improving system energy efficiency.

Read more...

---

Why local manufacturing, maintenance and support are key to the success of South Africa’s energy future
Power Electronics / Power Management
Although new renewable generation capacity is being developed, the current transmission infrastructure may not fully support the connection of these sources to the national grid or adequately deliver power to areas of high demand.

Read more...

---

Converter power modules for 48 V networks
Altron Arrow Power Electronics / Power Management
The economic and quality-of-life benefits of electrification is driving the adoption of HV to 48 V DC-DC conversion across many markets with 48 V power modules becoming more common.

Read more...

---

The importance of power integrity
Spectrum Concepts Power Electronics / Power Management
[Sponsored] Behind every high-speed system lies the need for power integrity. Without it, even the cleanest signal paths become compromised.

Read more...

---

Precise multi-vital sign monitoring
Future Electronics Power Electronics / Power Management
The AS7058 by ams OSRAM is an integrated multi-vital sign monitoring device, which provides a complete photoplethysmogram, electrocardiogram, body impedance sensor, and electrodermal activity sensor.

Read more...

---

Automotive battery diagnostics tester
Comtest Power Electronics / Power Management
Midtronics’ MVT handheld battery tester is a revolutionary tool, powered by MDX-AI, which is set to redefine the standards of battery diagnostics and testing in the automotive industry.

Read more...

---