The LMG2610 turn-on slew rates are programmed as discussed in Turn-On Slew-Rate Control. In normal active-clamp flyback (ACF) operation the high-side power switch operates at zero-voltage switching (ZVS), so the high-side turn-on time does not affect the switch node slew rate. Therefore, the high-side GaN power FET is programmed to turn on as fast as possible to minimize high-side GaN power-FET third-quadrant losses. The fastest high-side turn-on time is programmed by setting

In normal ACF operation, the low-side power switch operates at both ZVS and non-ZVS valley switching depending on the load condition. The valley switching occurs at zero transformer current. Therefore, the low-side is programmed to turn on as slow as possible to minimize EMI and circuit ringing with no additional switching loss penalty. The slowest low-side turn-on time is programmed by setting