Tandem Motion-Power 48 V Board Reference Manual

ID 683164
Date 11/05/2020

About the Tandem Motion-Power 48 V Board

The Tandem Motion-Power 48 V Board demonstrates control of DC-DC conversion and high-speed 12 to 48 V motors by a single FPGA. These applications are important in the automotive, medical, and industrial markets.

The Tandem Motion-Power 48 V Board contains a bidirectional DC-DC boost-buck converter to generate the DC link voltage and six half-bridge inverter outputs. The board sends three half-bridge outputs to each output connector to create two three-phase motor inverters. You can use the half bridges in alternative arrangements for motors with different numbers of phases. The board provides MOSFET power electronics for DC-DC conversion and DC Link inversion, current and voltage sensing for DC-DC and motor control feedback, and connections for motor position feedback. You can use the Tandem Motion-Power 48 V Board to develop a single or dual-axis motor control application that supports multiple motor types and multiple position feedback interfaces. The Tandem Motion-Power 48 V Board includes an HSMC interface connector for connection to a variety of Intel® FPGA and SoC-FPGA development kits.

Figure 1. Tandem Motion-Power 48 V Board

About Motor Control

Efficient control of torque and speed of AC motors requires corresponding control of voltage and current that you supply to the motor. In a typical motor control system, you generate a DC voltage known as the DC link or DC bus voltage. You then invert the DC voltage through switching of power electronics, such as insulated-gate bipolar transistors (IGBTs) or MOSFETs to create the appropriate variable AC voltages for the motor. Control algorithms such as field oriented control (FOC) require you to measure motor current and voltages, to provide the required feedback to the controller.

Multiaxis drives achieve either a high degree of coordination of control across motors or, in some applications, integrate control of multiple independent motors to reduce overall system cost. In servo drives, high-precision position feedback sensors, such as optical encoders, enable accurate position and speed control.

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