Abstract: An active inductor assembly for a data over power (DoP) system includes a first active inductor and a second active inductor. The first active inductor includes a first pass element and first control circuitry. The first control circuitry is configured to control the first pass element such that (i) the first pass element emulates a first inductor in response to changing voltage across the first pass element and (ii) the first pass element regulates a voltage drop across the first pass element during steady-state operation. The second active inductor includes a second pass element and second control circuitry. The second control circuitry is configured to control the second pass element such that (i) the second pass element emulates a second inductor in response to changing voltage across the second pass element and (ii) the second pass element regulates a voltage drop across the second pass element during steady-state operation.

Abstract: An active inductor assembly for a data over power (DoP) system includes a first active inductor and a second active inductor. The first active inductor includes a first pass element and first control circuitry. The first control circuitry is configured to control the first pass element such that (i) the first pass element emulates a first inductor in response to changing voltage across the first pass element and (ii) the first pass element regulates a voltage drop across the first pass element during steady-state operation. The second active inductor includes a second pass element and second control circuitry. The second control circuitry is configured to control the second pass element such that (i) the second pass element emulates a second inductor in response to changing voltage across the second pass element and (ii) the second pass element regulates a voltage drop across the second pass element during steady-state operation.

Abstract: An active inductor assembly for a data over power (DoP) system includes a first active inductor and a second active inductor. The first active inductor includes a first pass element and first control circuitry. The first control circuitry is configured to control the first pass element such that (i) the first pass element emulates a first inductor in response to changing voltage across the first pass element and (ii) the first pass element regulates a voltage drop across the first pass element during steady-state operation. The second active inductor includes a second pass element and second control circuitry. The second control circuitry is configured to control the second pass element such that (i) the second pass element emulates a second inductor in response to changing voltage across the second pass element and (ii) the second pass element regulates a voltage drop across the second pass element during steady-state operation.

Abstract: A driver circuit includes a primary driver sub-circuit, a comparator sub-circuit and an auxiliary driver sub-circuit. The primary driver sub-circuit is configured to (i) generate an output voltage, and (ii) supply a predetermined maximum amount of current from a power source to a load via a first switch. The comparator sub-circuit is configured to (i) detect when a high-power dissipation condition exists which could lead to overheating the primary driver sub-circuit, and (ii) based on detection of the condition, generate a first output signal. The auxiliary driver sub-circuit is configured to, based on the first output signal, transition between (i) pulling-up the output voltage to the source voltage and supplying current from the power source to the load, and (ii) decreasing an amount of current being supplied to the load.

Abstract: Embodiments of a discharge circuit are disclosed for quickly and safely discharging energy from an inductor load. The discharge circuit comprises a first switch, a second switch and a voltage regulator. The inductor load couples between the first switch and the second switch. During fast demagnetization, a high side switch is tuned off to decouple the load from a voltage source and the second switch is turned on. Voltage on one end of the load is pushed high and maintained at a predetermined level due to the voltage regulator. The predetermined voltage pulls down the current at the inductive load and causes temperature of the discharge circuit going up quickly. Once the temperature reaches a predetermined threshold, a comparing circuit outputs a signal to a driver and eventually pulls down voltage of the inductor load for low-power demagnetization.

Abstract: An integrated circuit for demagnetizing an inductive load includes a first switch to control current supplied by a voltage supply to the inductive load. A Zener diode includes an anode connected to a control terminal of the first switch and a cathode connected to the voltage supply. A second switch includes a control terminal and first and second terminals. A temperature sensing circuit is configured to sense a temperature of the first switch and to generate a sensed temperature. A comparing circuit includes inputs that receive a reference temperature and the sensed temperature and an output connected to the control terminal of the second switch.

Abstract: Embodiments of a discharge circuit are disclosed for quickly and safely discharging energy from an inductor load. The discharge circuit comprises a first switch, a second switch and a voltage regulator. The inductor load couples between the first switch and the second switch. During fast demagnetization, a high side switch is tuned off to decouple the load from a voltage source and the second switch is turned on. Voltage on one end of the load is pushed high and maintained at a predetermined level due to the voltage regulator. The predetermined voltage pulls down the current at the inductive load and causes temperature of the discharge circuit going up quickly. Once the temperature reaches a predetermined threshold, a comparing circuit outputs a signal to a driver and eventually pulls down voltage of the inductor load for low-power demagnetization.

Abstract: A discharge circuit for demagnetizing an inductive load includes a first switch comprising a control terminal and first and second terminals. The first terminal is connected to a voltage supply. A second switch includes a control terminal and first and second terminals. The second terminal of the first switch and the second terminal of the second switch are connected to the inductive load. A third switch includes a control terminal and first and second terminals. The first terminal of the third switch is connected to the first terminal of the second switch. A first Zener diode includes an anode connected to the control terminal of the second switch and a cathode connected to the voltage supply. A first temperature sensing circuit generates a first sensed temperature signal based on a temperature of at least one component of the circuit. A first comparing circuit receives a first reference temperature signal and the first sensed temperature signal and that generates a first output.

Abstract: An integrated circuit for demagnetizing an inductive load includes a first switch to control current supplied by a voltage supply to the inductive load. A Zener diode includes an anode connected to a control terminal of the first switch and a cathode connected to the voltage supply. A second switch includes a control terminal and first and second terminals. A temperature sensing circuit is configured to sense a temperature of the first switch and to generate a sensed temperature. A comparing circuit includes inputs that receive a reference temperature and the sensed temperature and an output connected to the control terminal of the second switch.

Abstract: An integrated circuit for demagnetizing an inductive load includes a first switch to control current supplied by a voltage supply to the inductive load. A Zener diode includes an anode connected to a control terminal of the first switch and a cathode connected to the voltage supply. A second switch includes a control terminal and first and second terminals. A temperature sensing circuit is configured to sense a temperature of the first switch and to generate a sensed temperature. A comparing circuit includes inputs that receive a reference temperature and the sensed temperature and an output connected to the control terminal of the second switch.

Abstract: An integrated circuit for demagnetizing an inductive load includes a first switch to control current supplied by a voltage supply to the inductive load. A Zener diode includes an anode connected to a control terminal of the first switch and a cathode connected to the voltage supply. A second switch includes a control terminal and first and second terminals. A temperature sensing circuit is configured to sense a temperature of the first switch and to generate a sensed temperature. A comparing circuit includes inputs that receive a reference temperature and the sensed temperature and an output connected to the control terminal of the second switch.