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公开(公告)号：US20240195300A1
公开(公告)日：2024-06-13
申请号：US18442596
申请日：2024-02-15
CPC分类号： H02M3/158 , H02M1/0054 , H02M1/32
摘要： 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.
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公开(公告)号：US20220037988A1
公开(公告)日：2022-02-03
申请号：US16945666
申请日：2020-07-31
发明人： Juha Olavi HAURU , Ari Kalevi VÄÄNÄNEN , Antti Juhani KORHONEN , Janne Matias Pahkala , Jussi Matti Aleksi SÄRKKÄ
摘要： 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.
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公开(公告)号：US20230208297A1
公开(公告)日：2023-06-29
申请号：US17564334
申请日：2021-12-29
CPC分类号： H02M3/158 , H02M1/0009
摘要： 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.
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