IR3555
Infineon Technologies
60A Integrated PowIRstage
Package Type: PQFN, 6mm x 6mm x 0.9mm
The IR3555 integrated PowIRstage® contains a synchronous buck gate driver IC which is co-packed with control and synchronous MOSFETs and a Schottky diode to further improve efficiency. The package is optimized for PCB layout, heat transfer, driver/MOSFET control timing, and minimal switch node ringing when layout guidelines are followed. The paired gate driver and MOSFET combination enables higher efficiency at lower output voltages required by cutting edge CPU, GPU, ASIC and DDR memory designs. The IR3555 PowIRstage® internal MOSFET current sense algorithm with integrated temperature compensation achieves superior current sense accuracy vs. best-in-class controller based Inductor DCR sense methods. Other features include preliminary overvoltage protection and flag, internal cycle-by-cycle self-preservation over current protection and flag, phase fault flag, over temperature protection and flag, and internal package temperature reporting. Up to 1.0MHz switching frequency enables high performance transient response, allowing miniaturization of output inductors, as well as input and output capacitors while maintaining industry leading efficiency. When combined with IR’s digital controllers, the IR3555 incorporates the Body-Braking™ feature through PWM tri-state which enables reduction of output capacitors. Synchronous diode-emulation mode is also supported through a built-in ZCD_EN# enabled zero-cross detect circuit in the IR3555 which increases system light-load efficiency. The IR3555 is optimized for CPU core power delivery in server applications. The ability to meet the stringent requirements of the server market also makes the IR3555 ideally suited for powering GPU, ASIC, DDR memory, and other high current designs.
Data sheet
