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IR3502MPBF Datasheet(PDF) 1 Page - International Rectifier |
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IR3502MPBF Datasheet(HTML) 1 Page - International Rectifier |
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1 / 39 page  IR3502 Page 1 of 39 July 28, 2009 DATA SHEET XPHASE3TM CONTROL IC DESCRIPTION The IR3502 control IC combined with an XPHASE3 TM Phase IC provides a full featured and flexible way to implement a complete VR11.0 and VR11.1 power solution. The IR3502 provides overall system control and interfaces with any number of Phase ICs, each driving and monitoring a single phase. The XPhase3 TM architecture results in a power supply that is smaller, less expensive, and easier to design while providing higher efficiency than conventional approaches. FEATURES • 1 to X phase operation with matching Phase IC • 0.5% overall system set point accuracy • Daisy-chain digital phase timing provides accurate phase interleaving without external components • Programmable 250kHz to 9MHz clock oscillator frequency provides per phase switching frequency of 250kHz to 1.5MHz • Programmable Dynamic VID Slew Rate • Programmable VID Offset or No Offset • Programmable Load Line Output Impedance • High speed error amplifier with wide bandwidth of 30MHz and fast slew rate of 10V/us • Programmable constant converter output current limit during soft start • Hiccup over current protection with delay during normal operation • Central over voltage detection and latch with programmable threshold and communication to phase ICs • Over voltage signal output to system with overvoltage detection during powerup and normal operation • Load current reporting • Single NTC thermistor compensation for correct current reporting, OC Threshold, and Droop • Detection and protection of open remote sense line • Open control loop protection • IC bias linear regulator controller • Programmable VRHOT function monitors temperature of power stage through a NTC thermistor • Remote sense amplifier with true converter voltage sensing • Simplified VR Ready (VRRDY) output provides indication of proper operation • Small thermally enhanced 32L 5mm x 5mm MLPQ package • RoHS compliant ORDERING INFORMATION Device Package Order Quantity IR3502MTRPBF 32 Lead MLPQ (5 x 5 mm body) 3000 per reel * IR3502MPBF 32 Lead MLPQ (5 x 5 mm body) 100 piece strips • Samples only |
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