3-Phase Inverter Reference Design Using the GD3162 with BOSCH CSL B-Sample SiC B6 Bridge

Overview

This document provides information on the RDGD3162CSL3PEVM, a three-phase inverter reference design and evaluation board. It is populated with six GD3162 single-channel IGBT/SiC MOSFET gate drive devices.

The evaluation board is designed for connectivity with a compatible BOSCH CSL B-sample module, facilitating the development and testing of full three-phase inverter applications.

Included with the board is the KITGD316xTREVB MCU/translator, which enables communication and testing using the Flex GUI software.

Note: Information herein is subject to change without notice. For additional details, please contact NXP support or your sales representative.

GD3162 Block Diagram Description

The GD3162 block diagram illustrates the architecture for controlling IGBT/SiC MOSFETs in a three-phase inverter system. The diagram is organized around two main safety power management interfaces (LV GND and HV GND), each connected to a logic block.

Logic Block 1 manages low-voltage (LV) functions, including fault configuration and reporting, configuration mode, Built-In Self-Test (BIST), safing logic, deadline control, Serial Peripheral Interface (SPI), duty cycle encoder, and fault status monitoring (INTB/Fault Status, VGE/VCE/Sev Fault Mon). It communicates via PWM (TX/RX) and DATA (TX/RX) signals.

Logic Block 2 handles high-voltage (HV) functions, encompassing fault configuration and reporting, configuration mode, BIST, gate control logic, and ASIL test control. It also communicates via PWM and DATA signals.

The Gate Driver Control section, receiving input from Logic Block 2, manages critical gate drive functions such as active Vce clamp, desaturation detection, charge and discharge control, active Miller clamp, IGBT current sensing, and SiC/IGBT temperature sensing. It interfaces with an AMUX 10-bit ADC for analog signal acquisition, including temperature (TEMP IC), general analog sensing, and power supply (VCC).

Additional Information

For more details, view additional information for the 3-Phase Inverter Reference Design Using the GD3162 with BOSCH CSL B-Sample SiC B6 Bridge.