Description：

The ISL99227 and ISL99227B are Smart Power Stage (SPS)compatible with the ISL68xxx/69xxx Digital Multiphase (DMP)controllers and phase doubler (ISL6617A), respectively. TheISL99227 and ISL99227B have integrated high accuracycurrent and temperature monitors that can be fed back to thecontroller and doubler to complete a multiphase DC/DCsystem. They simplify design and increase performance byeliminating the DCR sensing network and associated thermalcompensation. Light-load efficiency is supported through adedicated LFET control pin. An industry leading thermallyenhanced 5x5 PQFN package allows minimal overall PCB realestate.The ISL99227 and ISL99227B feature a 3.3V compatible, 5.0Vcompatible tri-state PWM input that, working together withRenesas multiphase PWM controllers, provide a robustsolution in the event of abnormal operating conditions. TheISL99227 and ISL99227B also improve system performanceand reliability with integrated fault protection of UVLO,over-temperature, and overcurrent. An open-drain faultreporting pin simplifies the handshake between SPS andRenesas controllers and can be used to disable the controllerduring start-up and fault conditions.

Features：

• Input range: +4.5V to +18V

• Supports 60A DC current

• ISL99227 with 3.3V compatible tri-state PWM input

• ISL99227B with 5.0V compatible tri-state PWM input

• Downslope current sensing

• ±3% accuracy current monitor (IMON) with REFIN input

• 8mV/°C temperature monitor with OT flag

• Dedicated low-side FET control input

• Comprehensive fault protection for high system reliability

- High-side FET short and overcurrent protection

- Over-temperature protection

- VCC and VIN Undervoltage Lockout (UVLO)

• Open-drain fault reporting output

• Up to 2MHz switching frequency

• RoHS compliant with Exemption 7a, 32 Ld 5x5 PQFN 

Applications：

• High frequency and high efficiency VRM and VRD

• Core, graphic, and memory regulators for microprocessors

• High density VR for server, networking, and cloud computing

• POL DC/DC converters and video gaming consoles