SiP41101

Vishay Siliconix

New Product

Document Number: 72377

S-31578—Rev. A, 11-Aug-03

www.vishay.com

1

Half-Bridge N-Channel MOSFET Driver With Break-Before-Make

FEATURES

APPLICATIONS

D 5-V Gate Drive

D Undervoltage Lockout

D Sub 1-W Gate Drivers

D Internal Bootstrap Diode

D Drive MOSFETs In 4.5- to 30-V Systems

D Switching Frequency: 250 kHz to 1 MHz

D Synchronous Enable/Disable Option

D Multi-Phase DC/DC

D High Current Synchronous Buck Converters

D High Frequency Synchronous Buck Converters

D Asynchronous-to-Synchronous Adaptations

D Mobile Computer DC/DC Converters

D Desktop Computer DC/DC Converters

DESCRIPTION

The SiP41101 is a high speed half-bridge driver, with

make-before-break, for use in high frequency, high current

multiphase dc-to-dc power supplies for supply voltages as

high as 30 V. It is designed to operate at frequencies up to

1 MHz. The high-side driver is bootstrapped to allow driving an

n-channel high-side MOSFET. The bootstrap diode is internal.

The output drivers provide currents up to 4 A, allowing use of

The SiP41101 comes with internal break-before-make

circuitry to prevent shoot-through current in the external

MOSFETs. The SD control pin is provided to enable the

drivers. A Synchronous Enable control pin is provided to

disable the

the low-side or synchronous MOSFET to

maximize efficiency under low output current conditions.

The SiP41101 is available in a 16-pin TSSOP package for

operation over the industrial temperature range of -40 to 85_C.

TYPICAL APPLICATION DIAGRAM

Controller

IN

SYNC_EN

SD

GND

GND

GND

+5 V

+5 to 30 V

BOOT

SiP41101