A current-mode switch-mode power supply controller includes a switch controller, a falling edge detector, and leading edge blanking (LEB) time logic. The switch controller is arranged to control regulation of an output signal via current-mode regulation by turning a primary switch on and off based on a current sense (CS) signal and an LEB signal, such that the switch controller is arranged to cause the primary switch to remain on while the LEB time signal is asserted. The falling edge detector is arranged to detect a falling edge in the CS signal. The LEB time logic is arranged to provide the LEB time signal such that the assertion of the LEB time signal begins when a gate signal is asserted, and such that the assertion of the LEB time signal ends when the falling edge detector detects the falling edge in the CS signal.