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AN709 - Designing with the Si9976DY N-Channel Half-Bridge Driver and LITTLE FOOT Dual MOSFETs

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Part number AN709
Manufacturer Vishay
File Size 86.96 KB
Description Designing with the Si9976DY N-Channel Half-Bridge Driver and LITTLE FOOT Dual MOSFETs
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AN709 Vishay Siliconix Designing with the Si9976DY N-Channel Half-Bridge Driver and LITTLE FOOTR Dual MOSFETs Wharton McDaniel INTRODUCTION The Si9976DY is a fully integrated half-bridge driver IC which was designed to work with the LITTLE FOOT family of power MOSFET products in 20- to 40-V systems. The Si9976DY provides the gate drive for both the low- and high-side MOSFETs while the Si9945 (SO-8, 3.3 A) or Si4946EY (SO-8, 4.5 A) dual n-channel LITTLE FOOT MOSFETs provide power handling capability without the need of a heatsink. All of these devices are supplied in surface-mount packages. The combination of the Si9976DY and one of the dual n-channel MOSFETs creates a powerful and flexible solution for power switching in dc motor drives.