AECM is a topology based on a fixed frequency modulator with emulated current information for the loop control. It combines the fixed frequency of PCM control and the fast load-transient response of the D-CAP control topology. The integrated oscillator generates the fixed clocks, and the emulated ramp generator with the smart loop-bandwidth control circuit can adjust the DC gain to achieve high bandwidth overall output rails. And even though there is an integrator, unlike PCM control, the integrator in AECM control can improve output-voltage accuracy with no direct impact on loop response speed. More details about AECM are in Achieving Fast Load-Transient Response and Low EMI with the AECM DC/DC Control Topology