Patent ID: 7915871

Claim:
A DC to DC converter device including an electronic circuit, the electronic circuit comprising: a first comparator having an inverting terminal coupled to receive a first reference signal, a non-inverting terminal, and an output terminal; a second comparator having an inverting terminal, a non-inverting terminal coupled to receive the first reference signal, and an output terminal; a first switch having a first terminal coupled to a first voltage source, a second terminal coupled to an output load, and a control terminal; a first latch having a set terminal coupled to the output of the second comparator, a reset terminal coupled to the output of the first comparator, and an output coupled to the control terminal of the first switch; and a current sensor coupled to sense an inductor current flowing through the output load, and coupled to provide a sense voltage to the non-inverting terminal of the first comparator and the inverting terminal of the second comparator, the sense voltage corresponding to the inductor current; wherein the inductor current includes a peak current value and a valley current value, the peak current value being higher than the valley current value, wherein the first comparator detects the peak current value and provides a first component of a first comparator output signal which resets the first latch, the first latch provides a first component of a first latch output signal to open the first switch in response to said first component of said first comparator output signal, wherein the second comparator detects the valley current value and provides a first component of a second comparator output signal which sets the first latch, the first latch provides a second component of the first latch output signal to close the first switch in response to said first component of said second comparator output signal.