A current mode switching controller contains at least one controllable semiconductor
switch, an impedance, a voltage divider, an external control circuit for regulating
the voltage, and an internal control circuit coupled to the external control circuit
and used to regulate the load current. The circuits controlling the controllable
semiconductor switch according to the load current and the output potential. An
integrator is provided for producing a control signal representing the load current
as a result of time integration of the voltage. A signal is supplied to the internal
control circuit as a control variable. Means for adapting the amplitude of the
integrator contains at least one transconductance whose value in a transient state
is inversely proportional to the output potential.
