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公开(公告)号：US12249911B2
公开(公告)日：2025-03-11
申请号：US18156766
申请日：2023-01-19
Applicant: Renesas Electronics America Inc.
Inventor： Barry John Concklin
Abstract: Apparatuses, devices, and methods for operating a multi-level voltage converter are described. A semiconductor device can include a circuit, where the circuit can include a plurality of current sources. The circuit can be configured to measure a flying capacitor voltage across a flying capacitor of a multi-level voltage converter. The circuit can be further configured to compare the flying capacitor voltage with a voltage level equivalent to an intermediate voltage that is between ground and an input voltage being provided to the multi-level voltage converter. The circuit can be further configured to, based on a result of the comparison, switch a current source among the plurality of current sources to maintain the flying capacitor voltage at the intermediate voltage.
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公开(公告)号：US12204356B2
公开(公告)日：2025-01-21
申请号：US17567066
申请日：2021-12-31
Applicant: Renesas Electronics America Inc.
Inventor： Travis John Guthrie , Timothy William Nutt , Aaron Michael Shreeve , Narendra Babu Kayathi , Robert Thomas Grisamore , Kiran Gonsalves
Abstract: Methods and systems for operating a voltage regulator are described. An apparatus may receive a feedback signal from a power stage. The feedback signal may be one of a sensed signal measured from an output of the power stage and a calibration signal representing a fixed voltage. The apparatus may convert the feedback signal into a correction signal. The apparatus may further adjust a synthetic current using the correction signal, the synthetic current being associated with the power stage.
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公开(公告)号：US20240429010A1
公开(公告)日：2024-12-26
申请号：US18337505
申请日：2023-06-20
Applicant: Renesas Electronics America Inc.
Inventor： Joshua LAWTON
Abstract: A driver for driving an electromechanical device having a solenoid and a mechanical switch. The driver includes an input port, a ground port, first and second output ports connectable to the electromechanical device; and two power switches. A controller operates in a first mode to charge the solenoid and close the mechanical switch, a second mode to maintain the mechanical switch closed, and a third mode to discharge the solenoid and open the mechanical switch. In the first and second modes, the low-side power switch is on and the high-side power switch is controlled to switch between an on-state and an off-state by the controller. In the on-state a path is formed between the input port and ground via the high-side and low-side power switches, and the solenoid. In the off-state a path is formed between ground and ground via a ground diode, the solenoid and the low-side power switch.
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公开(公告)号：US12164904B2
公开(公告)日：2024-12-10
申请号：US18160303
申请日：2023-01-26
Applicant: Renesas Electronics America Inc.
Inventor： Alberto Troia , Gentjan Qama , Syed Khurram Zaka Bukhari
Abstract: A sensor system and an update server perform a method for updating the sensor system. The update server performs steps of retrieving a pre-shared sensor key associated with the sensor system, calculating a server signature based on update data and the retrieved sensor key, and transmitting the update data and the calculated server signature to the sensor system. On the other hand, the sensor system performs steps of receiving the update data and the calculated server signature, retrieving the pre-shared sensor key stored in a register, calculating a sensor system signature based on the update data and the pre-shared sensor key, comparing the sensor system signature with the server signature and processing the update data if the sensor system signature and the server signature are identical.
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公开(公告)号：US20240396451A1
公开(公告)日：2024-11-28
申请号：US18324396
申请日：2023-05-26
Applicant: Renesas Electronics America Inc.
Inventor： Fei JI , Shea Lynn PETRICEK
Abstract: A DC-DC power converter has a ground terminal, an input terminal for receiving an input voltage and an output terminal for providing an output voltage with a target conversion ratio. The power converter includes a coupled inductor having a first winding and a second winding coupled to the output terminal; a first flying capacitor coupled to a first inductor and to the second winding; a second flying capacitor coupled to a second inductor and to the first winding; an input capacitor coupling the input terminal to the ground terminal; an output capacitor coupling the output terminal to the ground terminal; a network of switches; and a driver adapted to drive the network of switches with a sequence of states during a drive period, wherein the sequence of states forms a switching cycle.
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Patent Agency Ranking
公开(公告)号：US20240388202A1
公开(公告)日：2024-11-21
申请号：US18320014
申请日：2023-05-18
Applicant: Renesas Electronics America Inc.
Inventor： Barry John CONCKLIN
Abstract: Apparatuses, devices, and methods for operating a multi-level voltage converter are described. A circuit can, in response to a completion of a state of the multi-level voltage converter, output an indication that indicates whether a voltage of a flying capacitor in a multi-level voltage converter reaches a reference voltage or fails to reach the reference voltage. The completed state can be one of a charge state and a discharge state. A controller can, in response to the indication indicating the voltage of the flying capacitor fails to reach the reference voltage, repeat the completed state to operate the multi-level voltage converter.
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167.发明授权公开(公告)号：US12149105B2
公开(公告)日：2024-11-19
申请号：US17502613
申请日：2021-10-15
Applicant: Renesas Electronics America Inc.
Inventor： Shahriar Jalal Nibir , Yen-Mo Chen , Sungkeun Lim
IPC: H02J7/00
Abstract: A method, apparatus and non-transitory computer-readable medium of regulating current within a battery charging circuit. The apparatus including a first current sense resistor configured to sense a first current value at a first port, a second current sensor resistor configured to sense a battery discharge current value output from a battery, and a processor configured to, in response to a short circuit or malfunction at the first current sense resistor, use the battery discharge current value to determine an output current limit and to limit the current at the first port according to the output current limit.
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168.发明公开公开(公告)号：US20240322590A1
公开(公告)日：2024-09-26
申请号：US18188672
申请日：2023-03-23
Applicant: Renesas Electronics America Inc.
Inventor： Shahriar Jalal NIBIR , Sungkeun LIM , Yen-Mo Chen , Chong HAN , Heonyoung KIM
IPC: H02J7/02
CPC classification number: H02J7/02 , H02J2207/20 , H02J2207/30 , H02M1/4225 , H02M1/4291
Abstract: A method may include receiving power from a power adapter having a power adapter current limit, providing power from the power adapter to a load having a load current at a first load current level that is less than or equal to the power adapter current limit; generating a first periodic current through an inductor in a forward direction; detecting the load having the load current at a second load current level that may be greater than the adapter power current limit; decreasing the forward current level of the first periodic current; and generating a second periodic current through the inductor in a reverse direction to provide power from the battery module to the load. The second periodic current may be initiated in the reverse direction when the first periodic current in the forward direction reaches the zero current level.
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公开(公告)号：US20240297575A1
公开(公告)日：2024-09-05
申请号：US18593434
申请日：2024-03-01
Applicant: Renesas Electronics America Inc.
Inventor： Ryan Patrick FORAN , Yashovardhan Rao POTLAPALLI
IPC: H02M1/32 , G01R19/165 , H02M3/158
CPC classification number: H02M1/32 , G01R19/16552 , H02M3/158
Abstract: Systems and methods for over current protection are described. A controller can receive a differential feedback voltage signal from a power stage. The differential feedback voltage signal can be proportional to an inductor current through an inductor in the power stage. The controller can amplify the differential feedback voltage signal to generate a differential threshold that includes an upper bound and a lower bound. The controller can compare the amplified differential feedback voltage signal with the differential threshold. The controller can, based on a result of the comparison of the amplified differential feedback voltage signal with the differential threshold, determine whether to adjust at least one of a modulator on-time and a modulator off-time of a control signal to limit the inductor current, wherein the control signal is for driving the power stage.
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公开(公告)号：US20240297565A1
公开(公告)日：2024-09-05
申请号：US18592072
申请日：2024-02-29
Applicant: Renesas Electronics America Inc.
Inventor： Michael Jason HOUSTON , Brian Lee ALLEN
CPC classification number: H02M1/0009 , G06F1/04 , H02M1/32
Abstract: Systems and methods for a cycle-by-cycle current limit event indicator is described. A circuit can include receiving a plurality of signals indicating occurrences of a plurality of overcurrent events over a plurality of clock cycles in a voltage regulator. The circuit can further include generating a latch signal to indicate the occurrences of the plurality of overcurrent events over the plurality of clock cycles. The latch signal can remain latched at high voltage for a number of clock cycles.
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