8.2.2.9 Operation With IGBT's

The UCC27712-Q1 is well suited for driving IGBT's in various applications including motor drive and inverters. The design procedure is as the previous MOSFET example but the VDD voltage is typically 15-V to drive IGBT devices. Use the power transistor parameters and application specifications to determine the detail design and component values. See Figure 46 below for a typical IGBT application.

Figure 46. Typical IGBT Application Schematic

Refer to Figure 47 below for the UCC27712-Q1 driving 40-A, 650-V IGBT's in a high voltage sync buck configuration. The input voltage is 400 V, output 100 V with a 150-W output load. Channel 1 is the inductor current, Channel 2 is high-side IGBT VGE, Channel 3 is low-side IGBT VGE, and Channel 4 is the switch node or HS voltage.

Figure 47. IGBT Sync-Buck Operating at 400 V and 150 W