EPC LM5018 | Demoboard EPC9173

Description

The EPC9173 demonstration board is a 3-phase motor drive inverter board featuring the EPC23101 eGaN IC with embedded gate driver function and a floating power GaN FET with 3.3 mΩ maximum RDS(on), 100 V maximum voltage. Its application can be extended to a Buck, Boost, Half-Bridge, Full Bridge,or LLC Converters. The EPC9173 uses two integrated circuits for each switch position and can deliver up to 50 Apk (35 ARMS) maximum output current. The switching cell can operate up to 250 kHz PWM switching frequency given appropriate cooling. The EPC9173 contains all the necessary critical functions circuits to support a complete motor drive inverter including gate drivers, regulated auxiliary power rails for housekeeping supplies, voltage,and temperature sense, accurate current sense, and protection functions. The various functional blocks are shown in Figure 1. The EPC9173 mates with an assortment of compatible controllers, supported by various manufacturers leveraging existing resources for quick development purposes, that canquickly be configured as a motor drive inverter or DC–DC converter.

Features

• Dimensions: L x W = 130 x 100 mm (including connector)
• Low distortion switching that keeps motor audio emission low and reduces torque ripple
• dv/dt optimized for motor drives less than 10 V/ns with option to increase dv/dt for DC–DC applications
• All current sense with high accuracy and bandwidth (option to choose between in- line and leg shunt current sensors)
• All phases voltage sense
• Voltage sense for the DC supply to the drive
• Housekeeping power for the various circuits and external controller derived from the main power supply to the EPC9173
• Temperature monitoring circuit
• Protection features including: over-current and input supply under voltage lockout
• Shaft encoder/Hall sensors interface connector for motor drive application with two voltage levels selection option
• The board can also be configured to operate as a synchronous buck DC–DC converter.

Typical applications

• BLDC motor drives, Robotics, Drones, Synchronous buck DC-DC converters

More information

• Datasheet
• IC product information