LMG3410-HB-EVM

The LMG34XX-BB-EVM is an easy to use breakout board to configure any LMG34XX half bridge board, such as the LMG3410-HB-EVM, as a synchronous buck converter.  By providing a power stage, bias power and logic circuitry this EVM allows for quick measurements of the GaN device switching.  This EVM is capable of delivering up to 8 A of output current with adequate thermal management (forced air, low frequency operation, etc) to insure the maximum operating temperature is not exceeded.  This EVM is not suitable for transient measurements since it is an open loop board.

Only a single pulse width modulated input is required, with complementary pulse width modulated signals and corresponding dead time generated on board.  Probe points are provided to allow for key logic and power stage waveforms to be measured with oscilloscope probes that have short ground springs.

 

The LMG3410-HB-EVM configures two LMG3410R070 GaN FETs in a half bridge with all the necessary auxiliary peripheral circuitry.  This EVM is designed to work in conjunction with larger systems, such as the LMG34XX-BB-EVM or a custom designed power stage.  By providing the LMG3410R070 on a high performance layout with convenient connection points, operation and in circuit measurements can quickly and easily be achieved.

No level shifting or isolation is required since all necessary circuitry is included.  The auxiliary bias can be generated in two ways, default with isolated power supplies that require only a single 5V input and configurable to operate in bootstrap mode off 12V.  Exposed copper pads are provided for heatsink assembly to allow for higher power dissipation.