Buck Gate Driver 32-Pin PQFN T/R

The IR3575 exposed-top integrated PowIRstage is a synchronous buck gate driver co-packed with a control MOSFET and a synchronous MOSFET with integrated Schottky diode. It is optimized internally for PCB layout, heat transfer and driver/MOSFET timing. Custom designed gate driver and MOSFET combination enables higher efficiency at lower output voltages required by cutting edge CPU, GPU and DDR memory designs. 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. The IR3575’s superior efficiency enables smallest size and lower solution cost. The IR3575 PCB footprint is compatible with the IR3550 (60A), IR3551 (50A) and IR3553 (40A). Integrated current sense amplifier achieves superior current sense accuracy and signal to noise ratio vs. best-inclass controller based Inductor DCR sense methods. The IR3575 incorporates the Body-Braking feature which enables reduction of output capacitors. Synchronous diode emulation mode in the IR3575 removes the zero-current detection burden from the PWM controller and increases system light-load efficiency. The IR3575 is optimized specifically for CPU core power delivery in server applications. The ability to meet the stringent requirements of the server market also makes the IR3575 ideally suited to powering GPU and DDR memory designs and other high current applications.

• Peak efficiency up to 95% at 1.2V
• Integrated driver, control MOSFET, synchronous MOSFET and Schottky diode
• Input voltage (VIN) operating range up to 15V
• Output voltage range from 0.25V to Vcc-2.5V, or to 5.5V if internal current sense amplifier is not used
• Output current capability of 60A DC
• Operation up to 1.0MHz
• Integrated current sense amplifier
• VCC under voltage lockout
• Thermal flag
• Body-Braking® load transient support
• Diode-emulation high efficiency mode
• Compatible with 3.3V PWM logic and VCC tolerant
• Compliant with Intel DrMOS V4.0
• PCB footprint compatible with IR3550 and IR3551
• Enhanced top side cooling through exposed pad
• Small 6mm x 6mm x 0.9mm PQFN package
• Lead free RoHS compliant package