A switch controller (102, 1018, 1020) for a power converter that comprises a power switch (106, 1004, 1006), the switch controller comprising: primary-side circuitry referenced to a first potential, the first circuitry comprising signal transmission circuitry that includes a pulse generator; secondary-side circuitry referenced to a second potential and galvanically isolated from the first circuitry, the second circuitry comprising signal reception circuitry and a driver to be coupled to the power switch; and a magnetic coupling between the primary-side circuitry and the secondary-side circuitry across the galvanic isolation therebetween, the magnetic coupling comprising a transmitter-side inductor and a receiver-side inductor; wherein the pulse generator of the signal transmission circuitry is configured to apply a voltage and output current to the transmitter-side inductor to repeatedly transmit a first signal (234, 235, 334, 335, 434, 534, 535) indicating that the power switch is to be transitioned from an ON state to an OFF state during a time when the power switch is to be in the OFF state, wherein the first signal comprises a first information portion, a second signal (236, 237, 336, 337, 436, 536, 537) indicating that the power switch is to be transitioned from the OFF state to the ON state during a time when the power switch is to be in the ON state, wherein the second signal comprises a second information portion, characterized by a third signal indicating that a power switch is to transition from a) the present of either the ON state and the OFF state to b) the other of the ON state and the OFF state, wherein the third signal is an extension of an ongoing one of the first information portion and the second information portion. primary-side circuitry referenced to a first potential, the first circuitry comprising signal transmission circuitry that includes a pulse generator; secondary-side circuitry referenced to a second potential and galvanically isolated from the first circuitry, the second circuitry comprising signal reception circuitry and a driver to be coupled to the power switch; and a magnetic coupling between the primary-side circuitry and the secondary-side circuitry across the galvanic isolation therebetween, the magnetic coupling comprising a transmitter-side inductor and a receiver-side inductor; wherein the pulse generator of the signal transmission circuitry is configured to apply a voltage and output current to the transmitter-side inductor to repeatedly transmit a first signal (234, 235, 334, 335, 434, 534, 535) indicating that the power switch is to be transitioned from an ON state to an OFF state during a time when the power switch is to be in the OFF state, wherein the first signal comprises a first information portion, a second signal (236, 237, 336, 337, 436, 536, 537) indicating that the power switch is to be transitioned from the OFF state to the ON state during a time when the power switch is to be in the ON state, wherein the second signal comprises a second information portion, characterized by a third signal indicating that a power switch is to transition from a) the present of either the ON state and the OFF state to b) the other of the ON state and the OFF state, a first signal (234, 235, 334, 335, 434, 534, 535) indicating that the power switch is to be transitioned from an ON state to an OFF state during a time when the power switch is to be in the OFF state, wherein the first signal comprises a first information portion, a second signal (236, 237, 336, 337, 436, 536, 537) indicating that the power switch is to be transitioned from the OFF state to the ON state during a time when the power switch is to be in the ON state, wherein the second signal comprises a second information portion, characterized by a third signal indicating that a power switch is to transition from a) the present of either the ON state and the OFF state to b) the other of the ON state and the OFF state, a) the present of either the ON state and the OFF state to b) the other of the ON state and the OFF state, wherein the third signal is an extension of an ongoing one of the first information portion and the second information portion.