SI9912DY ,Half-Bridge MOSFET Driver for Switching Power SuppliesAbsolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, ..
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SI9912DY
Half-Bridge MOSFET Driver for Switching Power Supplies
VDC
OUTPUT
VDD
Si9912
Vishay Siliconix
Half-Bridge MOSFET Driver for Switching Power SuppliesFEATURES APPLICATIONS 4.5- to 5.5-V Operation Undervoltage Lockout 250-kHz to 1-MHz Switching Frequency Shutdown Quiescent Current <5 �A One Input PWM Signal Generates Both Drive Bootstrapped High-Side Drive Operates from 4.5- to 30-V Supply TTL/CMOS Compatible Input Levels 1-A Peak Drive Current Break-Before-Make Circuit Multiphase Desktop CPU Supplies Single-Supply Synchronous Buck Converters Mobile Computing CPU Core Power Converters Standard-Synchronous Converters High Frequency Switching Converters
DESCRIPTION
The Si9912 is a dual MOSFET high-speed driver withbreak-before-make. It is designed to operate in high frequencydc-dc switchmode power supplies. The high-side driver is
bootstrapped to handle the high voltage slew rate associatedwith “floating” high-side gate drivers. Each driver is capable of
switching a 3000-pF load with 60-ns propogation delay and25-ns transition time. The Si9912 comes with an internal
break-before-make feature to prevent shoot-through current inthe external MOSFETs. A shutdown pin is used to enable the
driver. When disabled, the quiescent current of the driver isless than 5 �A.
The Si9912 is available in both standard and lead (Pb)-free, 8-pin
SOIC packages for operation over the industrial operation range(−40�C to 85�C).
