Advanced IR Point-of-Load Chipset Delivers 80A with Three Active Devices.EL SEGUNDO El Segundo (ĕl sēgŭn`dō), industrial city (1990 pop. 15,223), Los Angeles co., S Calif., on Santa Monica Bay; inc. 1917. Its products include navigation and computer systems, aircraft parts, office machines, telephone apparatus, and , Calif. -- International Rectifier, IR(r) (NYSE NYSE See: New York Stock Exchange :IRF IRF Interferon Regulatory Factor IRF International Religious Freedom IRF Institut for Rationel Farmakoterapi (German) IRF Inherited Rights Filter (Novell) IRF Inherited Rights Filter ), a world leader in power management technology, today introduced the IR3623, a high performance dual synchronous buck PWM (Pulse Width Modulation) A modulation technique that generates variable-width pulses to represent the amplitude of an analog input signal. Like its fixed-width pulse density modulation (PDM) cousin, the output switching transistor is on more of the time for a control IC. Designed to be used with iP2003A iPOWIR(tm) integrated driver-MOSFET power building blocks, the chipset reduces component count and footprint in non-isolated, DC-to-DC buck converters delivering up to 80A in embedded networking and communications systems, point-of-load (POL) regulator modules and high-density blade servers. The chipset can be configured to operate either as a high current (80A), single output converter, or as two independent 40A converters, switching 180 degrees out of phase. For example, in a 12V input, 1.75V output application with 500kHz switching frequency and a dual-channel configuration, the IR3623/iP2003A chipset achieves greater than 90 percent efficiency at 25A per channel without a heatsink. Compared to a similar converter made with a discrete power stage, the chipset requires 32% less board area as component count shrinks from eleven active devices to only three. "Compared to standard discrete solutions, the IR3623/iP2003A chipset offers several benefits, including ease of design, reduced component count and space savings. In addition, the chipset is fully rated for switching frequencies up to 1MHz (MegaHertZ) One million cycles per second. It is used to measure the transmission speed of electronic devices, including channels, buses and the computer's internal clock. A one-megahertz clock (1 MHz) means some number of bits (16, 32, 64, etc. , enabling the highest levels of power density through the use of smaller output inductors and reduced number of output capacitors," said Faisal Ahmad, marketing manager for DC-DC DC-DC Direct Current to Direct Current (power conversion) Computing Products at International Rectifier. The new PWM control IC offers a full array of protection features. For start-up, the IR3623 features a dedicated enable pin, an input under-voltage lockout lockout, intentional closing up of a company, factory, or shop by an employer to prevent employees from working during a strike or labor dispute. The term lockout circuit, and the ability to start-up into a pre-biased output voltage. In addition, the device features hiccup hiccup or hiccough, involuntary spasmodic contraction of the diaphragm followed by a sharp intake of air, which is abruptly stopped by a sudden, involuntary closing of the glottis (opening between the vocal cords); the consequent blocking of air mode over-current protection, output over-voltage protection and thermal shutdown. For true dual-channel operation, the chipset offers two independent programmable soft starts, and two independent power-good outputs. The IR3623 offers full support for output voltage tracking and power sequencing for multi-rail applications. Flexibility is included to allow for sequential, ratio metric or simultaneous voltage tracking of both channels without the need for any external components. The iP2003A power stage block integrates a synchronous gate driver, high- and low-side power MOSFETs, a synchronous Schottky diode and passive components required for each converter phase, simplifying design and layout. More information is posted on the International Rectifier Web site: http://www.irf.com/whats-new/nr060330.html Availability and Pricing Pricing for the IR3623MPbF in 100-piece tubes and the IR3623MTRPbF in 3,000-piece Tape & Reel is US $1.80 for each device in 10,000-unit quantities. Pricing for the iP2003ATR ATR Achilles tendon reflex, see Ankle reflex begins at US $7.95 each in 10,000-unit quantities. Prices are subject to change. The devices are lead-free and are compliant with the Restriction of Hazardous Substances Directive The Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment 2002/95/EC[1] (commonly referred to as the Restriction of Hazardous Substances Directive or RoHS (RoHS). About International Rectifier International Rectifier (NYSE:IRF) is a world leader in power management technology. IR's analog and mixed signal ICs, advanced circuit devices, integrated power systems and components enable high performance computing and reduce energy waste from motors, the world's single largest consumer of electricity. Leading manufacturers of computers, energy efficient appliances, lighting, automobiles, satellites, aircraft and defense systems rely on IR's power management benchmarks to power their next generation products. For more information, go to www.irf.com. Patent and Trademark Notice IR's proprietary DirectFET(r) technology is covered by US Patents 6624522, 6784540 and multiple other US and foreign pending patent applications. DirectFET(r), IR(r) and HEXFET HEXFET Hexagonal Field Effect Transistor (r) are registered trademarks of International Rectifier Corporation. iPOWIR(tm) is a trademark of International Rectifier. All other product names noted herein may be trademarks of their respective holders. |
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