Texas Instruments LMG342XEVM-04X User Manual

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User's Guide
LMG342XEVM-04X User Guide
The LMG342XEVM-04X features two LMG342XR0X0 600-V GaN FETs with an integrated driver and protection
in a half-bridge configuration with all the required bias circuit and logic/power level shifting. Essential power
stage and gate-driving, high-frequency current loops are fully enclosed on the board to minimize power loop
parasitic inductance for reducing voltage overshoots and improving performance. The LMG342XEVM-04X is
configured for a socket style external connection for easy interface with external power stages to run the
LMG342XR0X0 in various applications. Refer to the LMG342XR0X0 data sheet before using this EVM.
1 General TI High Voltage Evaluation User Safety Guidelines .............................................................................................
1.1 Safety and Precautions......................................................................................................................................................
2 Introduction.............................................................................................................................................................................5
2.1 LMG342XEVM-04X Daughter Card...................................................................................................................................
2.2 Mother Boards....................................................................................................................................................................9
2.3 Typical Applications............................................................................................................................................................9
2.4 Features.............................................................................................................................................................................
3 LMG342XEVM-04X Schematic.............................................................................................................................................
4 Mother Board Schematic......................................................................................................................................................12
5 Recommended Footprint.....................................................................................................................................................
6 Test Equipment.....................................................................................................................................................................
7 Test Procedure When Paired With
7.1 Setup................................................................................................................................................................................16
7.2 Start-Up and Operating Procedure..................................................................................................................................
7.3 Test Results......................................................................................................................................................................18
7.4 Shutdown Procedure........................................................................................................................................................19
7.5 Additional Operating Notes..............................................................................................................................................
8 Test Procedure When Paired With LMG34XX-BB-EVM.....................................................................................................
8.1 Setup................................................................................................................................................................................20
8.2 Start-Up and Operating Procedure..................................................................................................................................
8.3 Shutdown Procedure........................................................................................................................................................23
8.4 Additional Operation Notes..............................................................................................................................................
9 Bill of Materials.....................................................................................................................................................................
10 Revision History.................................................................................................................................................................
Figure 2-1. LMG342XEVM-04X Block Diagram..........................................................................................................................
Figure 2-2. Front Side View of the EVM......................................................................................................................................
Figure 2-3. Back Side View of the
Figure 3-1. LMG342XEVM-04X Schematic...............................................................................................................................
Figure 4-1. LMG342X-BB-EVM Schematic...............................................................................................................................
Figure 4-2. LMG34XX-BB-EVM Schematic...............................................................................................................................
Figure 5-1. Recommended Footprint for LMG342XEVM-04X ..................................................................................................
Figure 7-1. LMG342X-BB-EVM Motherboard With LMG342XEVM-04X ..................................................................................
Figure 7-2. Connector and LEDs on the
Figure 7-3. Switch-Node Voltage Measurement with High-Bandwidth Probe and Pigtail Ground
Figure 7-4. 85 V/ns at 400 V/20 A.............................................................................................................................................
Figure 7-5. 100 V/ns at 400 V/20 A...........................................................................................................................................
Figure 7-6. 30 V/ns at 400 V/20 A.............................................................................................................................................
Figure 7-7. 150 V/ns at 400 V/5 A.............................................................................................................................................
SNOU176B - OCTOBER 2020 - REVISED MARCH 2022
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ABSTRACT

Table of Contents

LMG342X-BB-EVM......................................................................................................16
List of Figures
EVM.......................................................................................................................................8
LMG342X-BB-EVM....................................................................................................17
Copyright © 2022 Texas Instruments Incorporated
Table of Contents
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