Texas Instruments LMG352 EVM-04 Series, Руководство пользователя

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User’s Guide
LMG352XEVM-04X User Guide
ABSTRACT
The LMG352XEVM-04X features two LMG352XR0X0 650-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 LMG352XEVM-04X is
configured for a socket style external connection for easy interface with external power stages to run the
LMG352XR0X0 in various applications. Refer to the LMG352XR0X0 data sheet before using this EVM.
Table of Contents
1 General TI High Voltage Evaluation User Safety Guidelines ............................................................................................. 3
1.1 Safety and Precautions...................................................................................................................................................... 4
2 Introduction ............................................................................................................................................................................. 5
2.1 LMG352XEVM-04X Daughter Card................................................................................................................................... 5
2.2 Mother Boards.................................................................................................................................................................... 9
2.3 Typical Applications............................................................................................................................................................ 9
2.4 Features............................................................................................................................................................................. 9
3 LMG352XEVM-04X Schematic ............................................................................................................................................. 10
4 Mother Board Schematic ...................................................................................................................................................... 11
5 Recommended Footprint ..................................................................................................................................................... 13
6 Test Equipment ..................................................................................................................................................................... 14
7 Test Procedure When Paired With LMG342X-BB-EVM ...................................................................................................... 15
7.1 Setup................................................................................................................................................................................ 15
7.2 Start-Up and Operating Procedure.................................................................................................................................. 16
7.3 Test Results...................................................................................................................................................................... 17
7.4 Shutdown Procedure........................................................................................................................................................ 18
7.5 Additional Operating Notes.............................................................................................................................................. 18
8 Test Procedure When Paired With LMG34XX-BB-EVM ..................................................................................................... 19
8.1 Setup................................................................................................................................................................................ 19
8.2 Start-Up and Operating Procedure.................................................................................................................................. 21
8.3 Shutdown Procedure........................................................................................................................................................ 22
8.4 Additional Operation Notes.............................................................................................................................................. 22
9 Bill of Materials ..................................................................................................................................................................... 23
10 Revision History ................................................................................................................................................................. 26
List of Figures
Figure 2-1. LMG352XEVM-04X Block Diagram.......................................................................................................................... 6
Figure 2-2. Front Side View of the EVM...................................................................................................................................... 7
Figure 2-3. Back Side View of the EVM....................................................................................................................................... 7
Figure 2-4. EVM on Coldplate..................................................................................................................................................... 8
Figure 3-1. LMG352XEVM-04X Schematic............................................................................................................................... 10
Figure 4-1. LMG342X-BB-EVM Schematic................................................................................................................................ 11
Figure 4-2. LMG34XX-BB-EVM Schematic............................................................................................................................... 12
Figure 5-1. Recommended Footprint for LMG352XEVM-04X .................................................................................................. 13
Figure 7-1. LMG342X-BB-EVM Motherboard With LMG352XEVM-04X .................................................................................. 15
Figure 7-2. Connector and LEDs on the LMG342X-BB-EVM.................................................................................................... 16
Figure 7-3. Switch-Node Voltage Measurement with High-Bandwidth Probe and Pigtail Ground Connection.......................... 16
Figure 7-4. Continuous Buck Operation at 4 kW....................................................................................................................... 17
Figure 7-5. Fast Slew Rate at 400V/20A Switching Conditions................................................................................................. 17
Figure 8-1. LMG352XEVM-04X Connected to the LMG34XX-BB-EVM.................................................................................... 19
www.ti.com Table of Contents
SNOU178A – OCTOBER 2020 – REVISED FEBRUARY 2021
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