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Dual Bootstrapped, High Voltage MOSFET Driver with Output Disable ADP3419
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All-in-one synchronous buck driver One PWM signal generates both drives Anticross-conduction protection circuitry Output disable function Crowbar control Synchronous override control Undervoltage lockout
SIMPLIFIED FUNCTIONAL BLOCK DIAGRAM
VCC
5
BST
10
IN 1 SD 2 UVLO, OVERLAP PROTECTION, SHUTDOWN AND CROWBAR CIRCUITS
9
DRVH SW
8
DRVLSD 3
APPLICATIONS
Mobile computing CPU core power converters Multiphase desk-note CPU supplies Single-supply synchronous buck converters Nonsynchronous-to-synchronous drive conversion
CROWBAR 4
6
DRVL
04620-0-001
ADP3419
7
GND
Figure 1.