Patent ID: 8659278

Claim:
A controller for a switching regulator, comprising: a hysteretic comparator ( 12 , 30 ) for controlling a switch ( 15 ) for switching current into an inductor ( 3 ), a first circuit ( 6 , 9 ) including a first voltage to current converter ( 6 ) for supplying a first signal representing instantaneous current in the inductor ( 3 ), when the switch is in an on state and when the switch is in an off state, to the comparator ( 12 , 30 ), a second circuit ( 36 , 37 , 41 , 42 ) including a second voltage to current converter ( 36 ) for supplying a second signal to the comparator, the second signal representing an error between a desired regulator output and a representation of an actual regulator output, and the comparator having a first input terminal arranged to receive the first signal and the second signal.