ADP3118 Datasheet | Analog Devices

FEATURES Optimized for low gate charge MOSFETs All-in-one synchronous buck driver Bootstrapped high-side drive One PWM signal generates both drives Anticross-conduction protection circuitry Output disable control turns off both MOSFETs to float output per Intel® VRM 10 specification GENERAL DESCRIPTION The ADP3118 is a dual high voltage MOSFET driver optimized for driving two N-channel MOSFETs, which are the two switches in a nonisolated synchronous buck power converter. Each of the drivers is capable of driving a 3000 p F load with a 25 ns propagation delay and a 25 ns transition time. One of the drivers can be bootstrapped and is designed to handle the high voltage slew rate associated with floating high-side gate drivers. The ADP3118 includes overlapping drive protection to prevent shoot-through current in the external MOSFETs. The OD pin shuts off both the high-side and the low-side MOSFETs to prevent rapid output capacitor discharge during system shutdown. The ADP3118 is specified over the mercial temperature range of 0°C to 85°C and is available in 8-lead SOIC package. APPLICATIONS Multiphase desktop CPU supplies Single-supply synchronous buck converters SIMPLIFIED FUNCTIONAL BLOCK DIAGRAM VIN 12V D1 CBST2 CBST1 IN 2 DRVH RG Q1 RBST DELAY TO INDUCTOR VCC 6 CMP 1V CONTROL LOGIC DRVL Q2 DELAY OD 3 PGND 05452-001 Figure 1. Flex-Mode™ is Protected by U.S. Patent 6683441 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA...