SIP41110

SiP41109/41110 New Product Vishay Siliconix Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion FEATURES D D D D D D D D D PWM With Tri-State Enable 12-V Low-Side Gate Drive (SiP41109) 8-V Low-Side Gate Drive (SiP41110) Undervoltage Lockout Internal Bootstrap Diode Switching Frequency Up to 1 MHz 30-ns Max Propagation Delay Drive MOSFETs In 5- to 48-V Systems Adaptive Shoot-Through Protection APPLICATIONS D D D D D Multi-Phase DC/DC Conversion High Current Low Voltage DC/DC Converters High Frequency DC/DC Converters Mobile and Desktop Computer DC/DC Converters Core Voltage Supplies for PC Micro-Processors DESCRIPTION The SiP41109 and SiP41110 are high-speed half-bridge MOSFET drivers for use in high frequency, high current, multiphase dc-to-dc synchronous rectifier buck power supplies. They are designed to operate at switching frequencies up to 1 MHz. The high-side driver is bootstrapped to allow driving n-channel MOSFETs. They feature adaptive shoot-through protection to prevent simultaneous conduction of the external MOSFETs. There are two options available for the voltage of the high-side and low-side drivers. In the SiP41109, the regulator supplies gate drive voltage to the high-side driver and VCC supplies the low-side driver. in the SiP41110, the regulator supplies the high- and low-side gate drive voltage. The SiP41109 and SiP41110 are assembled in a lead (Pb)-free 8-pin SOIC package for operation over the industrial operating range (−40 _C to 85 _C). TYPICAL...