Systems and methods for improving transient response in H-bridge buck-boost drivers
Granted: February 4, 2025
Patent Number:
12219677
Presented are systems and methods for improving transient response in buck-boost circuits avoid circuit instabilities in both boost mode and buck mode. In embodiments, this is accomplished when, in response to determining that the circuit operates in buck mode, a compensation circuit is adjusted to operate at a first bandwidth. In response to determining that the circuit operates in boost mode, the compensation circuit may then be adjusted to decrease a boost mode crossover frequency and…
Systems and methods for improving transient response in H-bridge buck-boost drivers using integrated matrix manager
Granted: January 21, 2025
Patent Number:
12207367
Presented are systems and methods for controlling a compensation circuit. In embodiments, a detection circuit receives a set of control signals that have been generated by a control circuit to drive a set of light emitting diode (LED) switches. The switches control a set of LEDs driven by a DC-DC converter that is coupled to a feedback loop to which the compensation circuit is removably coupled. In embodiments, the detection circuit determines whether the status of an LED is about to…
Secure authentication based on physically unclonable functions
Granted: January 14, 2025
Patent Number:
12199966
The invention relates to an electronic device, and more particularly, to systems, devices and methods of authenticating the electronic device using a challenge-response process that is based on a physically unclonable function (PUF). The electronic device comprises a PUF element, a processor and a communication interface. The PUF element generates an input signal based on at least one PUF that has unique physical features affected by manufacturing variability. A challenge-response…
Digital communication systems and associated methods
Granted: January 14, 2025
Patent Number:
12199582
A digital communication station includes a coupled inductor, driver circuitry, and a digital transceiver. The coupled inductor includes (1) a first winding connected between a first digital communication node and a first power node, (2) a second winding connected between a second digital communication node and a second power node, and (3) a third winding. The driver circuitry is configured to drive the third winding to increase respective inductance values of the first and second…
Integrated inductor assemblies and associated systems and methods
Granted: January 14, 2025
Patent Number:
12198845
A switching power converter includes an integrated inductor assembly, a first switching stage, and a second switching stage. The integrated inductor assembly includes a magnetic core and first and second windings disposed at least partially in the magnetic core. The second winding is separated from the first winding by a separation portion of the magnetic core. The first switching stage is configured such that a first current flowing from the first switching stage to the first winding…
Inductors including electrically conductive standoffs
Granted: January 14, 2025
Patent Number:
12198844
An inductor includes a magnetic core, a first winding, a first electrically conductive standoff, and a second electrically conductive standoff. The magnetic core includes opposing first and second outer surfaces separated from each other in a first direction. The first winding has first and second ends, and the first winding is wound around at least a portion of the magnetic core. The first electrically conductive standoff is connected to the first end of the first winding, and the first…
Circuit assemblies including metallic bars
Granted: December 31, 2024
Patent Number:
12185454
A circuit assembly includes a first substrate including a first outer surface, a first capacitor disposed on the first outer surface, and a first metallic bar. The first capacitor has a first capacitor thickness in a first direction orthogonal to the first outer surface. The first metallic bar has a first bar thickness in the first direction, the first bar thickness being greater than the first capacitor thickness. An electrical load is optionally disposed on a second outer surface of…
Systems and methods for asymmetric image splitter clock generation
Granted: December 24, 2024
Patent Number:
12177604
Described herein are systems and methods that provide for asymmetric image splitter image stream applications. In one embodiment, a system supporting image multi-streaming comprises an asymmetric image splitter engine that splits super-frame image streams into two or more image streams and a fractional clock divider circuit. The fractional clock divider may comprise a digital feedback control loop and a one-bit sigma delta modulator. The fractional clock divider circuit may provide…
Systems and methods for fault detection and reporting through serial interface transceivers
Granted: December 17, 2024
Patent Number:
12169218
Circuitry, systems, and methods for fault detection and reporting comprise a fault detection circuit configured to detect one or more fault conditions that cause a state change in a fault pin voltage representative of a transceiver failure. Once the state of the fault pin voltage changes, a transceiver input generates a fault detection code. In embodiments, in response to the transceiver input receiving a first signal, the fault detection code is shifted to a transceiver output that may…
Time of flight sensors and sensing methods
Granted: December 10, 2024
Patent Number:
12164063
A time of flight sensor includes a time of flight (TOF) processor having a digital TOF port, a digital input port, and a digital output port, the TOF processor comprising a phase detector including cyclically rotating demultiplexer (DEMUX), a first summer coupled to a first DEMUX output, a second summer coupled to a second DEMUX output, a third summer coupled to a third DEMUX output, a fourth summer coupled to a fourth DEMUX output, and a phase estimator coupled to outputs of the first…
Offset voltage compensation
Granted: December 3, 2024
Patent Number:
12160212
A sensor offset voltage compensation circuit includes a programmable gain amplifier (PGA) having an input loop configured to receive the signal output by a sensor (e.g., a voltage generated a sensor resistive bridge of a pressure sensor) and an output loop configured to furnish an output signal having a voltage that is greater than the input voltage. An offset compensation voltage is applied to at least one of the input loop or the output loop of the PGA to at least substantially cancel…
Dynamic error quantizer tuning systems and methods
Granted: November 19, 2024
Patent Number:
12149280
Dynamic error-quantizer tuning systems and methods prevent misconvergence to local minima by using a dynamic quantizer circuit that controls reference voltages of three or more comparators that are independently adjusted to modify the transfer function of the dynamic quantizer circuit. A weighted sum of the comparator outputs is subtracted from the input to form an error signal in a control loop. The ratio of the reference voltages is chosen to reduce or eliminate local minima during a…
Systems and methods for improving transient response in slew-rate limited H-bridge buck-boost drivers
Granted: November 5, 2024
Patent Number:
12137503
Presented are average current mode control systems and methods for driving a load with a constant current. In embodiments, this is accomplished when, in response to a zero-current detection circuit detecting a zero current condition in the load current, a compensation circuit is disconnected from a first error amplifier to enable that error amplifier to provide a first voltage to a second error amplifier. The second error amplifier increases a charging current in a capacitor to reduce a…
Ultra-low power instant lock phase lock loop (PLL)
Granted: October 15, 2024
Patent Number:
12119831
Systems and methods reduce a locking time of a type-II all-digital phase-locked loop (ADPLL) circuit by performing steps that comprise receiving a reference signal having a reference frequency and setting a digitally controlled oscillator (DCO) to a target frequency greater than the reference frequency. The DCO generates an output signal that is used to generate a feedback signal. A time-to-digital converter is used to determine an initial phase difference between the reference signal…
Method and circuit arrangement for controlling a stepper motor
Granted: October 15, 2024
Patent Number:
12119776
Described is a method and a circuit arrangement for controlling a stepper motor in a voltage-controlled or voltage-regulated operating mode, having a bridge circuit provided for a motor coil (A) with semiconductor switches (HS1, HS2, LS1, LS2) for applying a first and a second PWM voltage (U(LA1), U(LA2)) having opposite polarity to the motor coil (A) and having a charge pump for switching at least the high-side semiconductor switch (HS1, HS2) of the bridge circuit. Because the charge…
Angle-of-arrival antenna system
Granted: October 15, 2024
Patent Number:
12119555
An angle-of-arrival antenna system uses two orthogonal arrays of patch antenna elements to measure the angle of arrival of a wireless signal irrespective of its polarization. Each antenna element has an antenna patch located over a corresponding ground patch. A shorting wall directly electrically connects one edge of the antenna patch to a corresponding edge of the underlying ground patch. The edge of the ground patch is also directly connected to a system ground plane. No other edges of…
Systems and methods to cable shield fault detection and protection
Granted: October 8, 2024
Patent Number:
12113353
Described are system and method embodiments for establishing a weak ground path, comprising: disabling a first ground path for a shield pin of a cable connection interface, the first ground path including a first switch; enabling a second ground path for the shield pin, the second ground path comprises a second switch, and the second ground path having a higher resistance than the first ground path; determining a connection of a device to the cable connection interface with the second…
Systems and methods for real-time fault detection
Granted: September 24, 2024
Patent Number:
12099084
Described herein are systems and methods for real-time fault detection in electrical circuits. Various embodiments provide a fault detection circuit that uses a resistor network that is controlled to detect an internal current leak in multiple directions, e.g., to ground or to a power supply. The magnitude of the leakage current may be estimated from voltage measurements at voltage pins. In addition, as part of circuit diagnostics, open and short circuit fault conditions may be…
Power control systems and methods for machine learning computing resources
Granted: September 3, 2024
Patent Number:
12079063
Described are context-aware low-power systems and methods that reduce power consumption in compute circuits such as commonly available machine learning hardware accelerators that carry out a large number of arithmetic operations when performing convolution operations and related computations. Various embodiments exploit the fact that power demand for a series of computation steps and many other functions a hardware accelerator performs is highly deterministic, thus, allowing for energy…
Method and circuit assembly for sensorless load detection in stepper motors
Granted: August 20, 2024
Patent Number:
12068714
A method and a circuit assembly are described with which, in a stepper motor, a mechanical load applied to the motor shaft of which can be detected without a sensor in a voltage-based operating mode in which a nominal coil current is generated by applying a predetermined coil voltage (Us) to the coil. The coil is connected in a bridge branch of a bridge circuit formed from a first to fourth semiconductor switch (S1, . . . S4), wherein the predetermined coil voltage (Us) is applied to the…
