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EVM User's Guide: LMG3100EVM-089
LMG3100EVM-089 Evaluation Module
Description
The LMG3100 evaluation module is a compact, easy-
to-use power stage with an external PWM signal. The
board can be configured as a buck converter, boost
converter, or other converter topology using a half
bridge. Because this is an open-loop board with an
external PWM signal, do not use to evaluate transient
response. The device can be used to evaluate the
performance of the LMG3100 as a hard-switched
converter to sample measurements such as efficiency,
switching speed and dv/dt (slew rate). The EVM
features two LMG3100 power modules, each with
one 100 V, 1.7-mΩ GaN FET driven by a GaN FET
gate driver. The evaluation module can deliver up
to 40 A of current (limited by saturation current of
inductor) if the application includes adequate thermal
management (monitor case temperature and verify
adequate airflow is present if required). The thermal
management considerations include forced air, heat
sink, and lower operating frequency to minimize the
power dissipation in the module.
SNVU890 – JANUARY 2024
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LMG3100EVM-089 Evaluation Module with Heat Sink
Copyright © 2024 Texas Instruments Incorporated
Features
•
Input voltage operates up to 80 V DC
•
Two integrated 100-V, 1.7-mΩ GaN FETs with
drivers in half-bridge configuration
•
Open loop control with single or dual PWM signals
•
Configurable onboard dead-time adjustment by
simple resistance change
•
Onboard LDO for generating 5-V VCC supply from
an unregulated supply between 5.5 V and 10 V
•
Kelvin sense capability for efficiency
measurements for input and output voltage
•
Slew rate adjustment using series resistors along
with C
and C
boot
vcc
Applications
•
Buck, Boost, Buck-Boost converters
•
LLC converters
•
Solar power
optimizer,
•
Class D amplifiers for audio
•
48-V point-of-load converters for industrial
•
Motor drives
•
Power tools
•
Telecom and server power
LMG3100EVM-089 Evaluation Module
Description
Micro-inverter
1
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Related Manuals for Texas Instruments LMG3100
Summary of Contents for Texas Instruments LMG3100
- Page 1 Description EVM User's Guide: LMG3100EVM-089 LMG3100EVM-089 Evaluation Module Description Features The LMG3100 evaluation module is a compact, easy- • Input voltage operates up to 80 V DC to-use power stage with an external PWM signal. The • Two integrated 100-V, 1.7-mΩ GaN FETs with...
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Page 2: Kit Contents
The LMG3100 is available in a 6.5 mm x 4.0 mm x 0.89 mm lead-free QFN package with exposed die on the top side for cooling. Power pins of the device are optimized to accommodate easy PCB layout to achieve smaller power loop. - Page 3 Evaluation Module Overview General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines WARNING Always follow TI's set-up and application instructions, including use of all interface components within the recommended electrical rated voltage and power limits. Always use electrical safety precautions to help ensure your personal safety and those working around you.
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Page 4: Test Points
There is the bias supply EXTVCC (between 5.5 V and 10 V) for the LMG3100 driver. This driver supply is regulated to 5 V by the series LDO U2 (LP3869). This regulation verifies that the bias supply for the LMG3100 is accurate and is not exceeded beyond the gate voltage specifications. -
Page 5: Power-Up Procedure
Load the output with an appropriate electronic load. Note The PWM duty cycle must be adjusted to compensate for the losses when the supply is loaded SNVU890 – JANUARY 2024 LMG3100EVM-089 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... -
Page 6: Power-Down Procedure
2. Next, turn off the input supply. 3. The PWM signal must be turned off next. 4. Finally, turn off the driver bias supply. LMG3100EVM-089 Evaluation Module SNVU890 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... -
Page 7: Electrical Performance Specifications
(TIM) is used. TIM of GR80A-0H-50GY (thermal conductivity of 8 W/mK and thickness of 0.5 mm) has been placed between the device and the heat sink. Please make sure the TIM is making contact with both the heat sink and LMG3100 devices when heat sink is installed. WARNING High voltages that can cause injury exist on this evaluation module (EVM). - Page 8 Figure 3-5. SW Node Low-Side Turn-Off Figure 3-6. SW Node Low-Side Turn-On Note Visit the E2E forum Gallium Nitride Solutions for more information regarding LMG3100 or LMG3100 hard-switched EVM. LMG3100EVM-089 Evaluation Module SNVU890 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 9 The schematic and other design files are also available for download in the design files tab of the EVM product page (LMG3100EVM-089). Figure 4-1. LMG3100EVM-089 Schematic SNVU890 – JANUARY 2024 LMG3100EVM-089 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
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Page 10: Pcb Layouts
Hardware Design Files www.ti.com 4.2 PCB Layouts Figure 4-2. Top Layer of the PCB Figure 4-3. Mid Layer-1 LMG3100EVM-089 Evaluation Module SNVU890 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... - Page 11 Hardware Design Files Figure 4-4. Mid Layer-2 Figure 4-5. Bottom Layer SNVU890 – JANUARY 2024 LMG3100EVM-089 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 12 Heat Sink, Black Anodized, 35 x 50 mm, 20 S05MZZ37 Alpha Novatech mm high, with Push Pin and Spring Thermal Interface Material GR80A-0H-50GY Fuji Polymer Industries LMG3100EVM-089 Evaluation Module SNVU890 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 13 Texas Instruments Dual Schmitt-Trigger Inverter, YZP0006ADBD YZP0006ADBD SN74LVC2G14YZPR Texas Instruments (DSBGA-6) No alternate component manufacturer. Unless otherwise noted, all parts can be substituted with equivalents. SNVU890 – JANUARY 2024 LMG3100EVM-089 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
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Page 14: Additional Information
Additional Information www.ti.com 5 Additional Information 5.1 Trademarks All trademarks are the property of their respective owners. LMG3100EVM-089 Evaluation Module SNVU890 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... - Page 15 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
- Page 16 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
- Page 17 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
- Page 18 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
- Page 19 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2023, Texas Instruments Incorporated...
- Page 20 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2024, Texas Instruments Incorporated...
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