ADP3650 Datasheet | Analog Devices

FEATURES All-in-one synchronous buck driver Bootstrapped high-side drive One PWM signal generates both drives Anti-crossconduction protection circuitry OD for disabling the driver outputs GENERAL DESCRIPTION The ADP3650 is a dual, high voltage MOSFET driver optimized for driving two N-channel MOSFETs, the two switches in a nonisolated synchronous buck power converter. Each driver is capable of driving a 3000 p F load with a 45 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 ADP3650 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 ADP3650 is specified over the temperature range of - 40°C to +85°C and is available in 8-lead SOIC_N and 8-lead LFCSP_VD packages. APPLICATIONS Tele and data networking Industrial and medical systems Point of load conversion: memory, DSP, FPGA, ASIC FUNCTIONAL BLOCK DIAGRAM 12V D1 LATCH R1 R2 Q S DELAY CBST2 CBST1 DRVH RG IN 2 Q1 TO INDUCTOR RBST SW VCC 6 DRVL CMP 1V CONTROL LOGIC Q2 Figure 1. Rev. A 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 02062-9106, U.S.A. Tel: 781.329.4700 .analog. Fax: 781.461.3113 ©2008- 2010 Analog Devices, Inc. All rights reserved. 07826-001 OD...