25A/35A DrMOS Module with Diode Emulation and PS4

The ISL99125B and ISL99135B are high-performance DrMOS power modules designed for high-frequency power conversion. By combining a high-performance FET driver and MOSFETs in an advanced package, high-density DC/DC converters may be created. Combined with an Intersil PWM controller, a complete voltage regulator solution can be created with reduced external components and minimum overall PCB real estate.

The ISL99125B and ISL99135B feature a three-state PWM input that, working together with Intersil’s 5V PWM controllers (such as ISL6398, ISL9585x, ISL637x, ISL633x, ISL636x, and ISL68201), will provide a robust solution in the event of abnormal operating conditions.

Features

• VIN range: 0V to 25V

• Current capability: 25A (ISL99125B), 35A (ISL99135B)

• Supports three-state 5.0V PWM input

• 0.5Ω ON-resistance and 4A sink current capability

• Diode emulation for enhanced light-load efficiency

• Ultra low shutdown supply current (3µA) for PS4 operation

• Low three-state hold-off time

• Adaptive shoot-through protection

• Integrated high-side gate-to-source resistor to prevent self

   turn-on due to high input bus dv/dt

• VCC undervoltage lockout

• Switching frequencies up to 2MHz

• Pb-free (RoHS compliant)

• 3.5x5 QFN 24 Ld package

Applications

• High-efficiency and high-density 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