Another consideration for gate drive transformers is transients on the gate driver IC. There are multiple factors that can make gate driver transformer topologies more stressful on the gate driver IC. One factor is the EMI generated by the transformer. The magnetic field generated by the transformer can couple into different traces on the PCB. This coupling can cause ringing on pins such as the input or enable pins which do not usually experience much ringing. This is one reason why gate drivers such as UCC27624 are designed to tolerate negative voltages and the input and output pins. Negative transient tolerance in the gate driver IC can reduce the need for external clamp diodes and save on system cost and size.

Another factor is the capacitive coupling to the high-voltage switch node. Push-pull type transformers tend to have relatively high inter-winding capacitance compared to LLC transformers. The inter-winding capacitance allows current to couple from the switch node to the primary. This current can also cause ringing and transients on the gate drive IC, which can lead to damage in some cases. This factor is why some designers use two primary-side resistors, as the resistors protect the gate driver IC from the injected current on both OUTA and OUTB, rather than just one.