Product category: Power Supply ICs and Controllers
News Release from: International Rectifier | Subject: IR2214 and IR22141
Edited by the Electronicstalk Editorial Team on 14 June 2004
Control ICs simplify
industrial motor drive design
The IR2214 and IR22141 are 1200V-rated HVICs for industrial motor drive control
IR's 1200V-rated high-voltage ICs can be safely used as a single-part solution in high voltage industrial systems for protection circuits as well as high- and low-side switching. Competing devices rated at lower voltages typically use several components and bulky optocouplers to accomplish the same switching and protection functions.
This article was originally published on Electronicstalk on 14 June 2004 at 8.00am (UK)
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The new half-bridge gate driver ICs are designed specifically for 400V AC, three-phase AC induction motor drives using a 550V bus as well as brushless DC motors both from 10 to 20hp.
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 3A for high voltage, high current IGBTs, MOSFETs and integrated power modules.
Typical applications include industrial automation systems, compressors, pumps and forklifts.
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Both ICs include full soft-shutdown motor drive protection, detecting any de-saturation condition or undervoltage supply and sending fault feedback to the controller.
Soft overcurrent shutdown avoids power node over- and undershooting, 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.
"IR's exclusive high voltage integrated circuit (HVIC) technology increases functionality while decreasing external component count".
"For example, built-in de-saturation detect (diode biasing) enables short-circuit protection in single-phase applications and phase-to-phase short-circuit protection in multiphase circuits with no need for additional circuitry, eliminating short-circuit protection microcode".
"All functions fit into a compact 24-pin package, simplifying integration into system boards", said David Tam, International Rectifier Vice President, Consumer and Industrial Sector Business.
Other benefits include a full range rail-to-rail output stage that allows up to 20V gate drive, which provides a larger safe operating area (SOA), compared to competing devices with 18V 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 3.3V CMOS logic interfaces are compatible with most microcontrollers.
The IR2214SS and IR22141SS half-bridge IGBT driver ICs are available immediately.
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