Texas Instruments LMG2640EVM-090 Manual

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EVM User's Guide: LMG2640EVM-090
LMG2640 Half-Bridge Daughter Card Evaluation Module
Description
The LMG2640EVM-090 is designed to provide a
quick and easy platform to evaluate TI integrated
GaN devices in any half-bridge topology. The board
is designed to be interfaced with a larger system
using the 6 power pins and 10 digital pins on the
bottom edge of the board in a socket style external
connection. Power pins form the main switching loop
consisting of a high voltage DC bus, switch node, and
power ground. The digital pins control the LMG2640
device with PWM gate inputs, provide auxiliary power
with low voltage supplies, and report faults as a
digital output. 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. Evaluating the LMG2640EVM
performance is most easily demonstrated using
a synchronous buck/boost motherboard from TI
(LMG342X-BB-EVM). The daughtercard easily plugs
into the motherboard and interfaces all power and
digital control in an open-loop configuration for full
system control. Additionally, a recommended footprint
SNOU206 – OCTOBER 2024
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is provided to interface the daughtercard with a
custom system for further testing. Refer to the
LMG2640 data sheet before using this EVM.
Features
• High-side gate-drive level shifter
• Smart-switched bootstrap diode function: 0 QRR
• Integrated lossless current sensing output
measurement
• Low-side and high-side cycle-by-cycle overcurrent
protection and overtemperature protection
connected to output FAULT signal
• Absolute maximum voltage rating of 650V
Applications
• LLC or TPPFC for gaming, PoE, monitor PSU, PD
adapter
• ACF, AHB for PD adapter, server aux
• Motor drive inverter
motor
• Inverter or
energy
• Buck or boost converters
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for hair dryer, vacuum, servo
micro-inverter for solar, renewable
LMG2640 Half-Bridge Daughter Card Evaluation Module
Description
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