AOZ5273QI Datasheet | Alpha & Omega Semiconductors

Description The AOZ5273QI is a general-purpose Smart Power Stage (SPS) consisting of two asymmetrical MOSFETs and an integrated driver for high current, high frequency DC-DC converters. The AOZ5273QI provides an output voltage signal (IMON), which represents the real-time module current with a gain of 5m V/A. The IMON signal can be directly used to replace inductor DCR sensing or resistor sensing in multiphase voltage regulator systems without the need for temperature pensation. The AOZ5273QI also includes an accurate module temperature monitor (TMON). TMON is a voltage sourced signal with a gain of 8m V/°C. The MOSFETs are individually optimized for operation in the synchronous buck configuration. The High-Side (HS) MOSFET is optimized to achieve low capacitance and gate charge for fast switching with low duty cycle operation. The Low-Side (LS) MOSFET has ultra-low ON resistance to minimize conduction loss. The standard 5mm x 6mm QFN package is optimally designed to minimize parasitic inductance for minimal EMI signature. Features - 3V to 20V power supply range - 30V HS MOSFET provides better system ruggedness - 70A continuous output current - Up to 100A for 10ms on pulse - Up to 150A for 10µs on pulse - Optimized for switching frequency up to 1MHz - Integrated current monitor (5m V/A) with 5% accuracy over temperature - Integrated temperature monitor (8m V/°C) with 2% accuracy - Fault Indicator - Under-Voltage Lock Out (UVLO) on VCC - Under-Voltage Lock Out (UVLO) on VIN - High-Side MOSFET Over-Current and Short-Circuit Protection - Zero Current Detect Function (ZCD) - Over Temperature Protection (OTP) - Standard QFN5x6-39L package Applications - Server systems - High end CPU/GPU power stage - munications Infrastructure Typical Application Circuit TMON/FLT PWM Controller IMON REFIN AGND OCSET/ZCD Driver Logic and Delay HS Driver LS Driver VIN BOOT CBOOT PHASE...