Description

The DIODES DGD0579U, High-side/Low-side gate driver with Integrated Bootstrap Diode is used to optimally drive the gate of MOSFETs. Below is an example application using DGD0579U with MOSFETs to make three Half-bridge circuits used to drive a BLDC motor. The DGD0579U is also well-suited to low voltage power supplies due to its high-speed performance. In this document, the important parameters needed to design in the DGD0579U are discussed. Main sections are bootstrap capacitor selection, gate driver component selection, decoupling capacitor discussion, and PCB layout suggestions.