Analog Devices Inc. EVAL-LT8418-BZ Evaluation Board

Analog Devices Inc. EVAL-LT8418-BZ Evaluation Board features the LT8418 driving two 100V enhanced Gallium Nitride (eGaN) FETs in a half-bridge configuration. The circuit is optimized as a buck converter but can be used as a boost converter or other converter topologies consisting of a half-bridge. The evaluation circuit delivers up to 10A with good thermal management. Depending on the configuration, an external single or two PWM signals are required to drive the board. In the single-input setup, the dead time circuitry on the board generates the complement signal and sets the dead time. The dead time circuitry is bypassed in the dual-input setup. The Analog Devices Inc. LT8418 driver has powerful 0.2Ω pull-down and 0.6Ω pull-up drivers driving two 100V GaN FETs. It also integrates a smart integrated bootstrap switch to generate a balanced bootstrap voltage from V_CC with a minimum dropout voltage. The LT8418 provides split gate drivers to adjust the turn-on and turn-off slew rates of GaN FETs to suppress ringing and optimize EMI performance.