Patent ID: 9608508
Date: 2017-03-28
CPC Classifications: G05F,H02M,H03H

Claim:
1. An integrated limiter and active filter comprising: an input node; an output node; a transistor coupled between said input node and said output node; a first control circuit coupled to a control terminal of said transistor, said first control circuit arranged to limit an amount of current flowing through said output node to a first predetermined value, the first predetermined value responsive to a first reference signal; a second control circuit coupled to the control terminal of said transistor, said second control circuit arranged to limit the voltage appearing at said output node to a second predetermined value, the second predetermined value responsive to a second reference signal; and a third control circuit coupled to said input node and arranged to provide said second reference signal, said third control circuit arranged to set said second reference signal to a value equal to the minimum of: a function of the input voltage at said input node, said input voltage determined over a predetermined period, plus a predetermined offset; and a predetermined maximum value.