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International Rectifier Enables 1.6VOUT, 80A Multiphase DC-DC Conversion with Up to 88.5% Full Load Efficiency using iPOWIRTM Technology
EL SEGUNDO, CA. September 2001 - International Rectifier IRŪ (NYSE: IRF) introduces three new multiphase, high current DC-DC converter reference designs. The reference designs use the iP2001 device, a building block for 5V to 12V input, 1V to 2V output synchronous buck converter circuits. The new reference designs offer high efficiency in a compact footprint. For example, the IRDCiP2001-C four-phase converter reference design offers up to 88.5% efficiency at 80A full load, 1.6VOUT and 500kHz in still air. This represents an efficiency improvement of up to 10% over a discrete solution.
The iP2001 is based on IR's innovative iPOWIRTM technology International Rectifier's iPOWIR technology is a flexible platform designed to simplify power conversion circuit design. Layout-critical passive components and optimized power semiconductors are arranged in a compact ball-grid array (BGA) package.
One iP2001 device replaces up to 11 discrete components or more, significantly reducing parts count and footprint and eliminating the need to specify, qualify, procure and assemble critical discrete components. The iP2001 device only requires a multiphase controller, input and output capacitors and output inductors to enable a fully-functional multiphase synchronous buck converter. iPOWIR devices enable a "building block approach" to power supply development.
The iP2001 device is now rated at 20A, an upgrade from the original 15A rating. The IRDCiP2001-A reference design is a two-phase DC-DC converter capable of up to 40A, the IRDCiP2001-B is a three-phase buck converter capable of 60A, and the IRDCiP2001-C is a four-phase 80A buck converter. The reference designs use one iP2001 device per phase.
The reference designs simplify high current DC-DC converter circuit development used to power CPUs in servers as well as network processing units (NPUs) and application-specific ICs (ASICs) in networking, telecom switchers and routers.
"Innovative ICs, MOSFETs and IR's power management expertise are all combined in the iP2001 building block. Designing with iPOWIR technology devices simplify design and ensures extremely high efficiency. The new reference designs demonstrate this innovative technology for the high current and fast transient response times required by today's power-hungry CPUs, NPUs and ASICs," said Chris Bull, Senior Product Marketing Manager.
| Reference Design Number |
Number of Phases |
Switching Frequency |
Input Voltage |
Output Voltage |
Output Current |
| IRDCiP2001-A |
2 |
500kHz /phase |
5-12V |
1-2V |
40A |
| IRDCiP2001-B |
3 |
500kHz /phase |
5-12V |
1-2V |
60A |
| IRDCiP2001-C |
4 |
500kHz /phase |
5-12V |
1-2V |
80A |
| The iP2001 reference designs are fully assembled, tested and documented. |
Pricing and Availability
All three reference designs are fully assembled, tested and documented and will be available in October 2001. Pricing is US $335 for the two-phase IRDCiP2001-A, US $365 for the three phase IRDCiP2001-B and US $395 for the four phase IRDCiP2001-C.
The 20A iP2001 devices are available now. Pricing is US $11.01 each in 1,000-unit quantities.
For more information:
Contact the Technical Assistance Center or
your local Sales Rep.
High Resolution JPEGs are available in the Press Room.
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