Dual Bootstrapped MOSFET Driver
a
FEATURES All-In-One Synchronous Buck Driver Bootstrapped High-Side Drive One PWM Signal Generates Both Drives Anticros...
Description
a
FEATURES All-In-One Synchronous Buck Driver Bootstrapped High-Side Drive One PWM Signal Generates Both Drives Anticross-Conduction Protection Circuitry Pulse-by-Pulse Disable Control
IN VCC
Dual Bootstrapped MOSFET Driver ADP3414
FUNCTIONAL BLOCK DIAGRAM
BST
DRVH OVERLAP PROTECTION CIRCUIT
APPLICATIONS Mobile Computing CPU Core Power Converters Multiphase Desktop CPU Supplies Single-Supply Synchronous Buck Converters Standard-to-Synchronous Converter Adaptations
SW
DRVL
ADP3414
PGND
GENERAL DESCRIPTION
The ADP3414 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 ADP3414 includes overlapping drive protection (ODP) to prevent shoot-through current in the external MOSFETs. The ADP3414 is specified over the commercial temperature range of 0°C to 70°C and is available in an 8-lead SOIC package.
7V D1 12V
VCC
ADP3414
BST
CBST DRVH
IN
Q1
SW
DELAY +1V DRVL 1V PGND Q2
Figure 1. General Application Circuit
REV. 0
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