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ADP3412

Analog Devices
Part Number ADP3412
Manufacturer Analog Devices
Description Dual MOSFET Driver with Bootstrapping
Published Mar 23, 2005
Detailed Description a FEATURES All-In-One Synchronous Buck Driver Bootstrapped High-Side Drive One PWM Signal Generates Both Drives Programm...
Datasheet PDF File ADP3412 PDF File

ADP3412
ADP3412

Overview
a FEATURES All-In-One Synchronous Buck Driver Bootstrapped High-Side Drive One PWM Signal Generates Both Drives Programmable Transition Delay Anticross-Conduction Protection Circuitry APPLICATIONS Multiphase Desktop CPU Supplies Mobile Computing CPU Core Power Converters Single-Supply Synchronous Buck Converters Standard-to-Synchronous Converter Adaptations IN Dual MOSFET Driver with Bootstrapping ADP3412 FUNCTIONAL BLOCK DIAGRAM VCC BST ADP3412 DRVH DLY OVERLAP PROTECTION CIRCUIT SW DRVL PGND GENERAL DESCRIPTION The ADP3412 is a dual 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 pF load with a 20 ns propagation delay and a 30 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 ADP3412 includes overlapping drive protection (ODP) to prevent shoot-through current in the external MOSFETs.
5V D1 VCC BST 12V ADP3412 CBST IN DRVH Q1 SW DLY CDLY DELAY 1V DRVL Q2 1V PGND Figure 1.
General Application Circuit REV.
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, 2000 ADP3412–SPECIFICATIONS1 (T = 0؇C to 70؇C, VCC = 5 V, BST = 4 V to 26 V, unless otherwise noted.
) A Parameter SUPPLY Supply Voltage Range Quiescent Current PWM INPUT Input Voltage High2 Input Voltage Low2 HIGH-SIDE DRIVER Output Resistance, Sourcing Current Output Resistance, Si...


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