Clocked electronic energy converter comprising - an electronic switching element , - at least two electrical energy stores , - a first connection for connecting an electrical energy source, - a second connection for connecting an electrical energy sink, - a clock generator for generating a control signal for the electronic switching element in switching operation with a switch-on time and a switch-off time, - wherein, in the case of an AC voltage energy source, the energy converter is operated as a power factor correction circuit, characterized in that the clocked electronic energy converter also has: - a switch-on time unit for generating a first signal for the clock generator , which switch-on time unit is designed to set a power to be transmitted of the energy converter in a first power range by means of the first signal and to generate, in a second power range, in which the power can be set to be less than in the first power range, a first signal for the clock generator , said first signal representing a fixedly predefined switch-on time, and - a switch-off time unit which is designed to generate a second signal for the clock generator in the second power range, said second signal representing a supplementary switch-off time (t off_add ) depending on the power to be transmitted, wherein, during operation, the switch-off time unit is designed either to average the supplementary switch-off time (t off_add ) over a network half-cycle in the second power range depending on the power to be transmitted or to carry out the determination of the supplementary switch-off time (t off_add ) in the second power range taking account of an electrical voltage (U in ) present at the first connection and/or an electrical voltage (U out ) present at the second connection , wherein the electronic energy converter is designed to control the first signal for the switch-on time (t on ) and the second signal for the supplementary switch-off time (t off_add ) in the second power range depending on a single third signal . - an electronic switching element , - at least two electrical energy stores , - a first connection for connecting an electrical energy source, - a second connection for connecting an electrical energy sink, - a clock generator for generating a control signal for the electronic switching element in switching operation with a switch-on time and a switch-off time, - wherein, in the case of an AC voltage energy source, the energy converter is operated as a power factor correction circuit, - a switch-on time unit for generating a first signal for the clock generator , which switch-on time unit is designed to set a power to be transmitted of the energy converter in a first power range by means of the first signal and to generate, in a second power range, in which the power can be set to be less than in the first power range, a first signal for the clock generator , said first signal representing a fixedly predefined switch-on time, and - a switch-off time unit which is designed to generate a second signal for the clock generator in the second power range, said second signal representing a supplementary switch-off time (t off_add ) depending on the power to be transmitted, <EOS>