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US 2019/0103753 A1Published application
A Regulator Control Circuit
AssigneeHaldex Brake Products Aktiebolag
InventorSteven Horton
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AssigneeHaldex Brake Products Aktiebolag
InventorSteven Horton
Estimating the term…
A regulator control circuit which is configured to control a switching regulator: a feedback comparator configured to compare a signal representative of a reference voltage with a signal representative of a voltage output of the switching regulator and to output a control signal for controlling the operation of the switching regulator dependent on the signals received by the feedback comparator; and a current feedback controller connected to the feedback comparator and configured to receive a signal representative of a current output by the switching regulator and determine whether the regulator control circuit adopts a first or second mode of operation based on the signal representative of a current output, such that, in the first mode of operation, the control signal is for controlling the switching regulator in accordance with a constant voltage control scheme and, in the second mode of operation, the control signal is for controlling the switching regulator in accordance with a constant current control scheme.
A regulator control circuit which is configured to control a switching regulator:
A circuit according to any preceding claim, further including a first drive switch circuit which is configured to receive an output from the current feedback controller and selectively to control an input of the current feedback controller dependent on the output from the current feedback controller.
A circuit according to any preceding claim, further including a regulator drive circuit which is configured to receive the output from the feedback comparator and to control the operation of the switching regulator in accordance with the output from the feedback comparator.
A circuit according to any preceding claim, further configured to clamp the output of the switching regulator to a clamp voltage and to modify the control signal to disable the switching regulator when the signal representative of the voltage output of the switching regulator and the signal representative of the reference voltage indicate that the voltage output is higher than the reference voltage.
A circuit according to any preceding claim, further including an output voltage transient protection circuit configured to protect the feedback comparator from high voltage transients in the output voltage.
A circuit according to any preceding claim, wherein the current feedback controller is further configured to determine whether the regulator control circuit adopts a fourth mode of operation in which hybrid pulse width and pulse frequency modulation is used to control the operation of the switching regulator.
A sensor circuit including a regulator control circuit according to any preceding claim, the switching regulator, and at least one sensor connected to the output of the switching regulator.
Dependencies are inferred from the claim text.