Patent ID: 7772821

Claim:
A digital current share bus interface, comprising: a digital controller arranged to provide an interface between a first power module and a current share bus, said first power module arranged to provide an output signal representative of its output current and to adjust its output current in response to a signal received at a control input, said digital controller comprising: a data formatting module which receives said output signal representative of said first power module's output current and generates a first digital word which represents said first power module's output current, the bits of said digital word coupled to said bus; and a comparator module having a first input connectable to a current share bus for receiving a second digital word which represents the output current of a power module coupled to said bus, and a second input which receives a digital signal representative of said first power module's output current from said data formatting module, said comparator module arranged to provide said signal to the control input of said first power module so as to adjust said first power module's output current to approximately match the current value represented by said second digital word.