Patent ID: 8860385

Claim:
A voltage controlled current source for bus regulation comprising: an inductor operable to couple to a current source; and a synchronous rectifier switch coupled to the inductor at a node and operable to couple the inductor to an electrical bus according to a first pulse width modulation (PWM) duty cycle to deliver a bus current to the electrical bus; and a PWM controller coupled to the synchronous rectifier switch, and operable to produce and control the first PWM duty cycle such that the bus current is proportional to a source current from the current source and the first PWM duty cycle based on a peak current feedback signal from the node and on feedback of the first PWM duty cycle from the PWM controller to the PWM controller, the feedback comprising an error signal differencing a bus voltage of the electrical bus and a low pass filter output of a first duty cycle signal of the first PWM duty cycle directly from the PWM controller, and the low pass filter output comprising an average voltage of the first PWM duty cycle.