March 18, 2014 - International Rectifier
EL SEGUNDO, Calif. — International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, today introduced its latest generation of highly versatile, PMBus™ enabled, CHiL® digital PWM controllers and integrated PowIRstage® solutions that significantly improve efficiency and reduce board space and component count in a variety of mid-range to high-end server, desktop and computing applications.
IR’s new digital controllers meet Intel VR12 and VR12.5 specifications, and support multiphase designs from 1 to 8 phases operating 1 to 2 loops. These digital controllers can be used in combination with a choice of seven new PowIRstage® products to deliver an optimized high-performance end-to-end multiphase solution for CPU and DDR memory applications.
These latest generation CHiL® controllers offer enhanced features over the previous generation including significant expansion in the PMBusTM command set, substantial reduction in quiescent current to enable higher peak efficiency, min/max telemetry recording and an improved high-speed phase balance algorithm.
“Our latest generation CHiL® digital controller family and PowIRstage® solutions offer a complete optimized, full-featured, high-performance end-to-end solution satisfying the challenging requirements of leading-edge next-generation CPU and DDR memory designs for servers, high-end motherboards and other computing systems. These new solutions incorporate our latest silicon technologies to boost in-circuit efficiencies and offer a substantial upgrade in system-level telemetry and reporting, fault protection and PMBusTM capability,” said Carl Smith, Marketing Director, IR’s Enterprise Power Business Unit.
IR’s latest PowIRstage® solutions integrate a high performance driver, control and synchronous MOSFETs with accurate, temperature compensated, on-chip current sense reporting and provide cycle-by-cycle over-current protection to self-protect against harsh circuit conditions such as inductor saturation events. Temperature sensing, reporting and over-temperature protection are also available in addition to a fault-flag output. These PowIRstage® devices are offered in 6x6mm PQFN packages, rated at 40A, 50A and 60A with over-molded and exposed top options available providing flexibility to achieve optimal thermal design.
|Part Number||Package||Pins||Vcc||# Outputs||Total # Phases||
Output 1: # Phases
|Output 2: # Phases|
|IR3580||6x6mm QFN||48 Pin||3.3V||1||8Ø||1 - 8Ø||n/a|
|IR3581||6x6mm QFN||48 Pin||3.3V||2||7Ø||1 - 6Ø||0 - 1Ø|
|IR3584||5x5mm QFN||40 Pin||3.3V||2||5Ø||1 - 4Ø||0 - 1Ø|
|Part Number||Package||Over-molded or Exposed Top||Current Rating||Input Voltage Range||Vcc Supply & Vdrv Voltage||
Pre-OVP Feature (Y/N)
|IR3555||6x6x0.9mm PQFN||Over-molded||60Amp||4.5V to 15V||4.5V to7V||Y|
|IR3555A||6x6x0.9mm PQFN||Over-molded||60Amp||4.5V to 15V||4.5V to7V||N|
|IR3579||6x6x0.65mm PQFN||Exposed Top||60Amp||4.5V to 15V||4.5V to7V||Y|
|IR3579A||6x6x0.65mm PQFN||Exposed Top||60Amp||4.5V to 15V||4.5V to7V||N|
|IR3578||6x6x0.65mm PQFN||Exposed Top||50Amp||4.5V to 15V||4.5V to7V||Y|
|IR3556||6x6x0.9mm PQFN||Over-molded||50Amp||4.5V to 15V||4.5V to7V||Y|
|IR3557||6x6x0.9mm PQFN||Over-molded||40Amp||4.5V to 15V||4.5V to7V||Y|
IR offers dedicated demo boards and fully documented reference designs. These CHiL® digital power solutions are fully supported by IR’s real-time GUI for design and development, and hardware interface tools to communicate and program the CHiL® devices.
Pricing for the controller range from US $3.81 each for the IR3584 to US $4.13 each for the IR3580 in 1,000-unit quantities. Pricing for the PowIRstage® devices range from US $3.19 each for the IR3557 to US $4.25 each for the IR3579 in 1,000-unit quantities. Prices are subject to change.