Abstract: Oscillator circuitry and methods of operation thereof are provided in which the oscillator circuitry includes at least a first oscillator, a second oscillator, and a lock detector. The first oscillator is configured to generate a first clock signal. The second oscillator is configured to generate a second clock signal. The lock detector is configured to detect a stable phase lock between the first clock signal and the second clock signal and to switch an output of the oscillator circuitry from the first clock signal to the second clock signal in response to detecting the stable phase lock.

Abstract: The present invention relates to a circuit comprising a self-conducting transistor referred to as power transistor, a further transistor referred to as control transistor, a further transistor referred to as first protection transistor, and a string referred to as a Zener string, which comprises at least one Zener diode, wherein the power transistor is coupled between a first terminal of the circuit and a first node of the circuit, wherein the control transistor is coupled between the first node and a second terminal of the circuit, wherein a gate terminal of the control transistor is coupled to a third terminal of the circuit, wherein the first protection transistor is coupled between the first node and the second terminal, and wherein the Zener string is coupled between the first terminal and a gate terminal of the first protection transistor.

Abstract: A self-biased, closed loop, low current free running oscillator clock generator method and apparatus are provided with a current mode comparator connected to a trimming resistor and configured to compare an internally generated voltage reference VREF signal to a voltage feedback signal VFB, where the current mode comparator comprises a common gate amplifier connected to a current mirror circuit in a negative self-biased closed loop to generate a control current signal for controlling a current controlled oscillator to produce an output clock signal having a clock frequency based on the control current signal, where a frequency-to-voltage converter is connected in a feedback path to receive the output clock signal and is configured to produce the voltage feedback signal VFB for input to the current mode comparator, wherein the clock frequency of the output clock signal is tuned to a nominal locked output frequency fOUT by the trimming resistor.

Abstract: Oscillator circuitry and methods of operation thereof are provided in which the oscillator circuitry includes at least a first oscillator, a second oscillator, and a lock detector. The first oscillator is configured to generate a first clock signal. The second oscillator is configured to generate a second clock signal. The lock detector is configured to detect a stable phase lock between the first clock signal and the second clock signal and to switch an output of the oscillator circuitry from the first clock signal to the second clock signal in response to detecting the stable phase lock.

Abstract: Embodiments of a power stage for a direct current (DC)-DC converter and a DC-DC converter are disclosed. In an embodiment, a power stage for a DC-DC converter includes an input terminal from which input power of the DC-DC converter with an input DC voltage is received, a high-side segment connected between the input DC voltage and an output signal of the power stage, and a low-side segment connected between the output signal of the power stage and ground. At least one of the high-side segment and the low-side segment includes stacked transistors having isolation terminals that are biased to reduce substrate injection.

Abstract: System and methods for suggesting insurance eligible genetic tests to a healthcare provider are disclosed. An EMR system is queried to retrieve insurance information, active medications, and diagnoses associated with a particular patient. An eligibility database is queried to retrieve insurance eligibly rules for a particular policy of a particular insurance providers based on the retrieved insurance information. A laboratory information system (“LIS”) applies the retrieved insurance eligibility rules to the retrieved active medications and diagnoses to determine eligible genetic tests. An electronic notification comprising an order form for each of the eligible genetic tests is transmitted from the LIS to the EMR.

Abstract: A semiconductor device has first and second current terminals and a control terminal that can be biased to form an electrically conductive path from the first current terminal to the second current terminal through a channel region is provided with a temperature-sensitive current limiting device. The current-limiting device is integrally formed from semiconductor material of the control terminal and is configured to cause a reduction in electrical current flowing through the channel region when the temperature of the device in the channel region exceeds a predetermined threshold temperature.

Abstract: Embodiments of a multi-mode transition circuit for a DC-DC converter and a DC-DC converter are disclosed. In an embodiment, a multi-mode transition circuit for a DC-DC converter includes a transconductance amplifier operably connected to a first resistor-capacitor (RC) network and switches, a comparator operably connected to a second RC network, where the first and second RC networks are operably connected to a reference voltage, a multiplexer operably connected to the transconductance amplifier and the comparator, and an operation mode selector configured to enable or disable the transconductance amplifier and turn on or off the switches in a sequence when transitioning between a pulse-frequency modulation (PFM) mode and a pulse-width modulation (PWM) mode.

Abstract: A semiconductor device has first and second current terminals and a control terminal that can be biased to form an electrically conductive path from the first current terminal to the second current terminal through a channel region is provided with a temperature-sensitive current limiting device. The current-limiting device is integrally formed from semiconductor material of the control terminal and is configured to cause a reduction in electrical current flowing through the channel region when the temperature of the device in the channel region exceeds a predetermined threshold temperature.

Abstract: System and methods for alerting a healthcare provider to prescribed treatments having reduced or no effectiveness due to genetic composition is provided. A database containing treatments known to have reduced or no efficacy in persons having particular genetic markers is queried to determine whether any treatments prescribed by, or likely to be prescribed by, a healthcare provider to the patient are known to have reduced or no efficacy in persons having the same certain genetic markers as the patient. An alert indicating such information is displayed at a healthcare provider system.

Abstract: Embodiments of a power stage for a direct current (DC)-DC converter and a DC-DC converter are disclosed. In an embodiment, a power stage for a DC-DC converter includes an input terminal from which input power of the DC-DC converter with an input DC voltage is received, a high-side segment connected between the input DC voltage and an output signal of the power stage, and a low-side segment connected between the output signal of the power stage and ground. At least one of the high-side segment and the low-side segment includes stacked transistors having isolation terminals that are biased to reduce substrate injection.

Abstract: Systems and methods monitoring progress of procedures by radiation exposure are provided. Position data is received for an equipment item used for the procedure and configured to produce radiation (“radiation device”). Position data is received from the tracking device during the procedure. An estimated exposure level is determined by a controller for the individual based, at least in part, on the position data from the tracking device relative to the position data from the radiation device and compared to a benchmark. If the estimated exposure level for the individual exceeds the benchmark, an electronic notification is generated.

Abstract: A method, power converter and controller are disclosed for controlling a power converter having a main converter connected between a first input voltage and a ground and having a main output at an output terminal, an auxiliary converter connected between a second input voltage and the ground and having an auxiliary output, an output capacitor connected between the main output terminal and a ground, and an auxiliary capacitor connected between the auxiliary output and the main output terminal; and a controller; the method comprising: operating the main converter at a first frequency, operating the auxiliary converter at a second frequency; controlling the main converter to control the voltage at the auxiliary output; and controlling the auxiliary converter to control the voltage at the main output.

Abstract: Disclosed are a controller and power converter having a main buck converter connected between a first input voltage and ground and having a main output, a bidirectional auxiliary converter connected between a second terminal and ground and having an auxiliary output connected to the main output, an output capacitor, and an auxiliary capacitor connected between the second terminal and the ground for providing a second terminal voltage at the second terminal; the controller comprising: first control circuit configured to operate the main converter at a first frequency; and second control circuit configured to operate the auxiliary converter at a higher frequency; the first control circuit being further configured to operate the main converter in dependence on the second terminal voltage; and the second control circuit being further configured to operate the auxiliary converter to control the voltage at the main output terminal.

Abstract: Embodiments of a multi-mode transition circuit for a DC-DC converter and a DC-DC converter are disclosed. In an embodiment, a multi-mode transition circuit for a DC-DC converter includes a transconductance amplifier operably connected to a first resistor-capacitor (RC) network and switches, a comparator operably connected to a second RC network, where the first and second RC networks are operably connected to a reference voltage, a multiplexer operably connected to the transconductance amplifier and the comparator, and an operation mode selector configured to enable or disable the transconductance amplifier and turn on or off the switches in a sequence when transitioning between a pulse-frequency modulation (PFM) mode and a pulse-width modulation (PWM) mode.

Abstract: An amplifier including a P-channel transistor having current terminals coupled between a first node and a second node and having a control terminal coupled to a third node receiving an input voltage, an N-channel transistor having current terminals coupled between a fourth node developing an output voltage and a supply voltage reference and having a control terminal coupled to the second node, a first resistor coupled between the first node and a supply voltage, a second resistor coupled between the first and fourth nodes, and a current sink sinking current from the second node to the supply reference node. The amplifier may be converted to differential form for amplifying a differential input voltage. Current devices may be adjusted for common mode, and may be moved or added to improve headroom or to improve power supply rejection. Chopper circuits may be added to reduce 1/f noise.

Abstract: Systems and methods for providing a real time visualization of scattered radiation in a medical facility are provided. A number of visualization devices such as augmented reality (“AR”) tracking devices, electronic displays, or projection devices are in electronic communication with a controller and configured to generate a visualization of scattered radiation. Position data is received from the position sensors associated with individuals in the medical facility, the AR tracking devices, radiation producing medical equipment, or radiation scattering medical equipment, and the visualization is adjusted accordingly.

Abstract: An amplifier including a P-channel transistor having current terminals coupled between a first node and a second node and having a control terminal coupled to a third node receiving an input voltage, an N-channel transistor having current terminals coupled between a fourth node developing an output voltage and a supply voltage reference and having a control terminal coupled to the second node, a first resistor coupled between the first node and a supply voltage, a second resistor coupled between the first and fourth nodes, and a current sink sinking current from the second node to the supply reference node. The amplifier may be converted to differential form for amplifying a differential input voltage. Current devices may be adjusted for common mode, and may be moved or added to improve headroom or to improve power supply rejection. Chopper circuits may be added to reduce 1/f noise.

Abstract: A bandgap reference correction circuit comprising a bandgap reference circuit comprising a first resistor; a first oscillator comprising a second resistor, wherein a frequency of a first oscillator output signal of the first oscillator depends on a resistance of the second resistor; and a compensation module configured to: receive the first oscillator output signal from the first oscillator and a reference frequency signal from a reference oscillator; determine the frequency of the first oscillator output signal using the reference frequency signal; and set a resistance of the first resistor based on the frequency of the first oscillator output signal.

Abstract: A system and method for alerting a healthcare provider to ineffective prescribed medications is provided. A laboratory system receives test results with genetic markers for a patient, queries a database containing medications known to be ineffective in persons having particular genetic markers to determine whether any medications prescribed by, or likely to be prescribed by, a healthcare provider to the patient are known to be ineffective in persons having the same genetic markers as the patient, and transmits an alert containing such information to a healthcare provider system for the healthcare provider.