Texas Instruments LMG2656 User Manual

www.ti.com
EVM User's Guide: LMG2656EVM-102
LMG2656 Half-Bridge Daughtercard Evaluation Module
Description
The LMG2656EVM-102 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 12 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 LMG2656
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 LMG2656EVM-102
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
SNOU209 – DECEMBER 2024
Submit Document Feedback
is provided to interface the daughtercard with a
custom system for further testing. Refer to the
LMG2656 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
Copyright © 2024 Texas Instruments Incorporated
for hair dryer, vacuum, servo
micro-inverter for solar, renewable
LMG2656 Half-Bridge Daughtercard Evaluation Module
Description
1