Abstract: A controller for a voltage converter, such as a buck converter, includes: a switching regulator circuit having high side and low side switches; comparators configured to compare a voltage of an output circuit to reference voltages; and a control circuit coupled to the current comparators, configured to receive outputs from the comparators, and configured to generate a control signal for alternatingly switching the high side and low side switches off and on, such that the low side switch is off when the high side switch is on, and the high side switch is off when the low side switch is on, and wherein the control circuit includes a latching circuit configured to latch a signal corresponding to at least one of the outputs from the comparators. A method of operating a buck converter in connection with a fixed high-frequency automotive radar system, with reliable over-current detection, is also disclosed.

Abstract: A feedback network has a feedback output terminal. A digital to analog converter has an analog output terminal. An amplifier includes an input differential pair having an inverting input terminal, a non-inverting input terminal, a first output current terminal and a second output current terminal. The inverting input terminal is coupled to the feedback output terminal, and the non-inverting input terminal is coupled to the analog output terminal. The amplifier includes a feedback differential pair having a third output current terminal, a fourth output current terminal, a first input terminal and a second input terminal. The third output current terminal is coupled to the first output current terminal, and the fourth output current terminal is coupled to the second output current terminal. The amplifier includes an amplifier output terminal coupled to the first input terminal and the second input terminal.

Abstract: A feedback network has a feedback output terminal. A digital to analog converter has an analog output terminal. An amplifier includes an input differential pair having an inverting input terminal, a non-inverting input terminal, a first output current terminal and a second output current terminal. The inverting input terminal is coupled to the feedback output terminal, and the non-inverting input terminal is coupled to the analog output terminal. The amplifier includes a feedback differential pair having a third output current terminal, a fourth output current terminal, a first input terminal and a second input terminal. The third output current terminal is coupled to the first output current terminal, and the fourth output current terminal is coupled to the second output current terminal. The amplifier includes an amplifier output terminal coupled to the first input terminal and the second input terminal.

Abstract: A controller for a voltage converter, such as a buck converter, includes: a switching regulator circuit having high side and low side switches; comparators configured to compare a voltage of an output circuit to reference voltages; and a control circuit coupled to the current comparators, configured to receive outputs from the comparators, and configured to generate a control signal for alternatingly switching the high side and low side switches off and on, such that the low side switch is off when the high side switch is on, and the high side switch is off when the low side switch is on, and wherein the control circuit includes a latching circuit configured to latch a signal corresponding to at least one of the outputs from the comparators. A method of operating a buck converter in connection with a fixed high-frequency automotive radar system, with reliable over-current detection, is also disclosed.

Abstract: In some examples, an apparatus comprises a switching regulator circuit, an output circuit, a duty cycle comparison circuit, a current comparison circuit, and a switching regulator control circuit. The switching regulator circuit switches between first and second voltages. The output circuit has a voltage input and a voltage output and generates a signal based on the first and second voltages. The duty cycle comparison circuit asserts a first signal responsive to a voltage at the voltage output exceeding a product of a multiplier and a reference signal. The current comparison circuit asserts a second signal responsive to a voltage at the voltage input exceeding a first reference voltage and to assert a third signal responsive to the voltage at the voltage input being below a second reference voltage. The switching regulator control circuit controls the switching regulator circuit based on the first, the second, and the third signals.

Abstract: In some examples, an apparatus comprises a switching regulator circuit, an output circuit, a duty cycle comparison circuit, a current comparison circuit, and a switching regulator control circuit. The switching regulator circuit switches between first and second voltages. The output circuit has a voltage input and a voltage output and generates a signal based on the first and second voltages. The duty cycle comparison circuit asserts a first signal responsive to a voltage at the voltage output exceeding a product of a multiplier and a reference signal. The current comparison circuit asserts a second signal responsive to a voltage at the voltage input exceeding a first reference voltage and to assert a third signal responsive to the voltage at the voltage input being below a second reference voltage. The switching regulator control circuit controls the switching regulator circuit based on the first, the second, and the third signals.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to bypass sensed signals in power converters. The disclosed methods, apparatus, systems and articles of manufacture provide an apparatus to bypass sensed signals in power converters, the apparatus comprising: a first single shot circuit to, during runtime of a power converter, generate a clock signal based on an adaptive delay, the adaptive delay based on a count value of a counter; a pulse comparator coupled to an adaptation pulse generator, the pulse comparator to, during runtime of the power converter: compare a first duration of the adaptation pulse to a second duration of a reference pulse; and adjust the count value of the counter; and a ready detector coupled to the pulse comparator, the ready detector to, in response to a trigger event, transmit, during runtime of the power converter, the count value to a second single shot circuit.

Abstract: A feedback network has a feedback output terminal. A digital to analog converter has an analog output terminal. An amplifier includes an input differential pair having an inverting input terminal, a non-inverting input terminal, a first output current terminal and a second output current terminal. The inverting input terminal is coupled to the feedback output terminal, and the non-inverting input terminal is coupled to the analog output terminal. The amplifier includes a feedback differential pair having a third output current terminal, a fourth output current terminal, a first input terminal and a second input terminal. The third output current terminal is coupled to the first output current terminal, and the fourth output current terminal is coupled to the second output current terminal. The amplifier includes an amplifier output terminal coupled to the first input terminal and the second input terminal.

Abstract: A power converter includes a power conversion circuit, an adaptive compensator coupled to a first output of the power conversion circuit, the adaptive compensator including, a voltage receiving circuit to generate a first current and a second current, a current mirror circuit coupled to the voltage receiving circuit, wherein the current mirror circuit replicates at least one of the first current or the second current, and a second output of the adaptive compensator, and a comparator to receive an input that is related to the second output of the adaptive compensator.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to bypass sensed signals in power converters. The disclosed methods, apparatus, systems and articles of manufacture provide an apparatus to bypass sensed signals in power converters, the apparatus comprising: a first single shot circuit to, during runtime of a power converter, generate a clock signal based on an adaptive delay, the adaptive delay based on a count value of a counter; a pulse comparator coupled to an adaptation pulse generator, the pulse comparator to, during runtime of the power converter: compare a first duration of the adaptation pulse to a second duration of a reference pulse; and adjust the count value of the counter; and a ready detector coupled to the pulse comparator, the ready detector to, in response to a trigger event, transmit, during runtime of the power converter, the count value to a second single shot circuit.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to provide adaptive current compensation in buck converters or other switched mode power supplies. In some examples, improvements result in an accuracy of current limits and/or current regulation in switched converters. An example apparatus includes a power conversion circuit, an adaptive compensator coupled to a first output of the power conversion circuit, the adaptive compensator including, a voltage receiving circuit to generate a first current and a second current, a current mirror circuit coupled to the voltage receiving circuit, wherein the current mirror circuit replicates at least one of the first current or the second current, and a second output of the adaptive compensator, and a comparator to receive an input that is related to the second output of the adaptive compensator.

Abstract: A buck converter includes a high side transistor, a low side transistor, and a controller. The high side transistor is configured to, when ON, connect an inductor to an input signal. The low side transistor is configured to, when ON, connect the inductor to ground. The controller is configured to control the high side transistor and the low side transistor. The controller has a comparator that includes a first input pair that includes a first transistor, a second transistor, a third transistor, a fourth transistor, a first switch, and a second switch connected such that, when the first switch is closed and the second switch is open, a total gain of the first input pair is one relative to other input pairs and, when the second switch is closed and the first switch is open, the total gain of the first input pair is two relative to other input pairs.