This reference design realizes a 3 phase inverter subsystem for variable frequency AC inverter drives and servo drives. This design is particularly suited for drive architectures in which the microcontroller and inverter ground are non-isolated. The basic isolated gate driver UCC5320S is used for driving the high side inverter switches, and the compact, six pin UCC27531 low side gate driver is used for driving the bottom switches. The result is for reinforced isolation to move to the UART communication channel. Inverter half bridge leg current sensing is done in two phases using shunt resistors and the dual operational amplifier TLV9062. This drive architecture results in a reduced number of reinforced isolated channels and enables a cost optimized, compact solution. This design is controlled by a C2000 microcontroller.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
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Design file that contains information on physical board layer of design PCB
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Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Compact, Non-Isolated, Three-Phase Inverter Ref Design for 200 to 480-VAC Drives | Oct. 09, 2017 | |
| Application brief | Implementing a Bipolar Gate Drive for Low-Side IGBTs and SiC FETs in Motor Drive | Oct. 10, 2019 |
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