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ADP3415

Analog Devices
Part Number ADP3415
Manufacturer Analog Devices
Description Dual MOSFET Driver with Bootstrapping
Published Mar 23, 2005
Detailed Description PRELIMINARY TECHNICAL DATA a Preliminary Technical Data FEATURES All-In-One Synchronous Buck Driver One PWM Signal Gene...
Datasheet PDF File ADP3415 PDF File

ADP3415
ADP3415

Overview
PRELIMINARY TECHNICAL DATA a Preliminary Technical Data FEATURES All-In-One Synchronous Buck Driver One PWM Signal Generates Both Drives Anticross-Conduction Protection Circuitry Programmable Transition Delay Zero-Crossing Synchronous Drive Control Synchronous Override Control Undervoltage Lockout Shutdown Quiescent Current < 10 mA APPLICATIONS Mobile Computing CPU Core Power Converters Multiphase Desktop CPU Supplies Single-Supply Synchronous Buck Converters Standard-to-Synchronous Converter Adaptations VCC IN SD DLY Dual MOSFET Driver with Bootstrapping ADP3415 FUNCTIONAL BLOCK DIAGRAM ADP3415 UVLO BST DRVH SW OVERLAP PROTECTION CIRCUIT VCC DRVL DRVLSD GND GENERAL DESCRIPTION 5V VDC-IN The ADP3415 is a dual MOSFET driver optimized for driving two N-channel FETs that are the two switches in the nonisolated synchronous buck power converter topology.
The driver sizes are each optimized for performance in notebook PC regulators for CPUs in the 20-amp range.
The high-side driver can be bootstrapped atop the switched node of the buck converter as needed to drive the upper switch, and is designed to accommodate the high voltage slew-rate associated with high-performance high-frequency switching.
The ADP3415 has several features: an overlapping protection circuit (OPC) undervoltage lockout (UVLO) that holds the switches off until the driver is assured of having sufficient voltage for proper operation, a programmable transition delay, and a synchronous drive disable pin.
The quiescent current, when the device is disabled, is less than 100 mA.
The ADP3415 is available in a 10-lead MSOP package.
FROM DUTY RATIO MODULATOR FROM SYSTEM ENABLE CONTROL FROM SYSTEM STATE LOGIC IN SD VCC BST DRVH VOUT ADP3415 DRVLSD SW DLY GND DRVL Figure 1.
Typical Application Circuit REV.
PrA 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 ...


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