A power stage configured for assigning each phase a unique address is disclosed. In particular, the disclosed power stage includes temporarily using a dedicated pulse width modulation (PWM) connection between a controller and a phase to assign a unique address to the phase. Then, after the assignment, the PWM connection may be returned to use for regulation, while the phases can communicate over a common communication bus using their assigned addresses. This addressed communication can be used to control a power state of all phases, all phases of a particular rail, or a particular phase. Controlling the power state with addressed commands communicated over a communication bus can help reduce the current consumed by the power stage during light load conditions or sleep states.

Provided are an electronic circuit, a linear regulating circuit, and a DC-DC converting circuit. An embodiment of the inventive concept includes a linear regulating circuit unit for generating, by comparing output voltages and corresponding reference voltages, a transient signal indicating that at least one of the output voltages is in a transient state, or a steady signal indicating that each of the output voltages is in a steady state, and for controlling the output voltages on the basis of the steady signal and the transient signal, an energy storing unit for storing energy used to generate the output voltages, a ground switch unit for controlling connection between the energy storing unit and a ground terminal, an input switch unit for controlling connection between at least one input terminal and the energy storing unit, and an output switch unit for controlling connection between output loads and the energy storing unit.

The present invention relates to a busbar current control circuit, a constant current drive controller and an LED light source, wherein the busbar current control circuit comprises a branch resistor, a branch capacitor and a branch current source, the branch resistor and the branch capacitor are connected in parallel to form a branch, one end of the branch is connected a position between the busbar resistor and the load, and the other end is connect to the branch current source; the branch current source outputs to the branch a current of adjustable magnitude, the sum of the voltage on the busbar resistor and the voltage on the branch resistor remains constant. Wherein the branch resistor occupies a portion of the voltage of the busbar resistor so that the magnitude of the current output by the busbar changes continuously, that is, when the current flowing into the branch increases, the voltage occupied by the branch resistor increases and the voltage on the busbar resistor decreases, so as to reduce the current on the busbar. Since the branch current is smoothly adjusted by the branch current source, the regulation of the Output current on the busbar is also smooth. This avoids the use of the SPWM wave or the dimming switch circuit in the prior art, and the stroboscopic phenomenon due to the discontinuity of the driving current.

The present invention relates to a busbar current control circuit, a constant current drive controller and an LED light source, wherein the busbar current control circuit comprises a branch resistor, a branch capacitor and a branch current source, the branch resistor and the branch capacitor are connected in parallel to form a branch, one end of the branch is connected a position between the busbar resistor and the load, and the other end is connect to the branch current source; the branch current source outputs to the branch a current of adjustable magnitude, the sum of the voltage on the busbar resistor and the voltage on the branch resistor remains constant. Wherein the branch resistor occupies a portion of the voltage of the busbar resistor so that the magnitude of the current output by the busbar changes continuously, that is, when the current flowing into the branch increases, the voltage occupied by the branch resistor increases and the voltage on the busbar resistor decreases, so as to reduce the current on the busbar. Since the branch current is smoothly adjusted by the branch current source, the regulation of the Output current on the busbar is also smooth. This avoids the use of the SPWM wave or the dimming switch circuit in the prior art, and the stroboscopic phenomenon due to the discontinuity of the driving current.

The invention provides a protection circuit applied in an inductive boost converter, the inductive boost converter includes a transmission circuit and a charging circuit, the protection circuit includes a detection circuit and a control circuit, an input terminal of the detection and an output terminal of the transmission circuit are connected, a first output terminal of the detection circuit and an input terminal of the charging circuit are connected, a second output terminal of the detection circuit and an input terminal of the control terminal are connected; the detection circuit detects whether an input current from the transmission circuit is a short-circuit current, if the circuit is shorted, the result will be sent to the control circuit, the control circuit cuts the connection of the charging circuit and ground, which can prevent charges stored in the charging circuit from flowing backward into the input terminal of the inductive boost converter.

The invention provides a protection circuit applied in an inductive boost converter, the inductive boost converter includes a transmission circuit and a charging circuit, the protection circuit includes a detection circuit and a control circuit, an input terminal of the detection and an output terminal of the transmission circuit are connected, a first output terminal of the detection circuit and an input terminal of the charging circuit are connected, a second output terminal of the detection circuit and an input terminal of the control terminal are connected; the detection circuit detects whether an input current from the transmission circuit is a short-circuit current, if the circuit is shorted, the result will be sent to the control circuit, the control circuit cuts the connection of the charging circuit and ground, which can prevent charges stored in the charging circuit from flowing backward into the input terminal of the inductive boost converter.

A switched mode power supply comprises a control signal generator arranged to generate first and second control signals via first and second outputs, respectively, which are coupled to respective first and second inputs of a switching stage, by means of respective first and second control signal paths. The switching stage is arranged to, responsive to the first and second control signals, alternately charge and discharge the reactive element by coupling it alternately to first and second supply voltages. An adjustable delay stage in one of the first and second signal paths is arranged to control an adjustable delay so that a first delay experienced by the first control signal passing from the control signal generator's first output to the switching stage's first input is substantially equal to a second delay experienced by the second control signal passing from the control signal generator's second output to the switching stage's second input.

A switched mode power supply comprises a control signal generator arranged to generate first and second control signals via first and second outputs, respectively, which are coupled to respective first and second inputs of a switching stage, by means of respective first and second control signal paths. The switching stage is arranged to, responsive to the first and second control signals, alternately charge and discharge the reactive element by coupling it alternately to first and second supply voltages. An adjustable delay stage in one of the first and second signal paths is arranged to control an adjustable delay so that a first delay experienced by the first control signal passing from the control signal generator's first output to the switching stage's first input is substantially equal to a second delay experienced by the second control signal passing from the control signal generator's second output to the switching stage's second input.

A power system for powering a load including a power converter and a control circuit coupled to the power converter. The power converter includes an input terminal for receiving an input voltage and an input current, and output terminal for outputting an output voltage and an output current to a load. The control circuit is configured to monitor the output voltage and the output current of the power converter and shut down the power converter in response to the output voltage being less than or equal to a defined voltage threshold and the output current being greater than or equal to a defined current threshold for a defined period of time. Other example power systems, control circuits, and methods of controlling power converters are also disclosed.

The invention provides a protection circuit applied in an inductive boost converter, the inductive boost converter includes a transmission circuit and a charging circuit, the protection circuit includes a detection circuit and a control circuit, an input terminal of the detection and an output terminal of the transmission circuit are connected, a first output terminal of the detection circuit and an input terminal of the charging circuit are connected, a second output terminal of the detection circuit and an input terminal of the control terminal are connected; the detection circuit detects whether an input current from the transmission circuit is a short-circuit current, if the circuit is shorted, the result will be sent to the control circuit, the control circuit cuts the connection of the charging circuit and ground, which can prevent charges stored in the charging circuit from flowing backward into the input terminal of the inductive boost converter.