A power switching circuit including a first DC/DC converter having a first input configured to receive a first input DC voltage, a second DC/DC converter having a first input configured to receive a second input DC voltage, a DC/AC inverter having a first input coupled to the output of the first DC/DC converter and a second input coupled to the output of the second DC/DC converter, the DC/AC inverter including n (n>2) switching legs, and at least one controller coupled to the first DC/DC converter, the second DC/DC converter, and the DC/AC inverter, the at least one controller configured to operate the DC/AC inverter to provide n AC signals to at least one load coupled to the DC/AC inverter by operating two of the n switching legs in a static state and n−2 of the n switching legs in a transition state.

Methods and apparatuses for controlling an apparatus comprising a controller integrated in a first slave device. In an example, the controller can detect a sensed current of the first slave device. The controller can receive a voltage signal associated with a second slave device connected to the first slave device. The controller can generate a correction current based on the sensed current of the first slave device and the voltage signal. The controller can modulate a pulse width modulation (PWM) signal received by the first slave device using the correction current. The controller can control a power converter using the modulated PWM signal.

A reactor includes a plurality of windings, a coupling core, and an inductor core. A coupling core configured to form a coupling closed magnetic circuit that magnetically couples the plurality of windings, the plurality of windings being wound around the coupling core; and. An inductor core, which includes a main part, a first projection part projecting from one end of the main part, and a second projection part projecting from another end of the main part, and each of the first projection part and the second projection part is magnetically connected to the coupling core. The inductor core forms an inductor closed magnetic circuit together with a part of the coupling core around which one winding of the plurality of windings is wound.

Pulse width modulation (PWM) controllers for hybrid converters are provided herein. In certain embodiments, a PWM controller for a hybrid converter includes a threshold generation circuit for generating a threshold signal based on an output voltage of the hybrid converter, a threshold adjustment circuit for generating an adjusted threshold signal based on sensing a voltage of a flying capacitor of the hybrid converter, and a comparator that generates a comparison signal based on comparing the adjusted threshold signal to an indication of an inductor current of the hybrid converter. The output of the comparator is used for generating PWM control signals used for turning on and off the switches (for instance, power transistors) of the hybrid converter.

A pre-charge control circuit includes a control unit, a conversion unit, and a pre-charge switch. The control unit provides a control signal according to a PWM signal, and the conversion unit provides a control voltage according to the control signal. The pre-charge switch adjusts a magnitude of the current flowing through the input path of the electronic circuit according to the control voltage.

A pre-charge control circuit includes a control unit, a conversion unit, and a pre-charge switch. The control unit provides a control signal according to a PWM signal, and the conversion unit provides a control voltage according to the control signal. The pre-charge switch adjusts a magnitude of the current flowing through the input path of the electronic circuit according to the control voltage.

A voltage regulation circuit includes a switching output terminal, a high-side output transistor, a low-side output transistor, a high-side replica transistor, a low-side replica transistor, and a comparator circuit. The high-side output transistor is configured to drive the switching output terminal. The low-side output transistor is configured to drive the switching output terminal. The high-side replica transistor is coupled to the high-side output transistor. The low-side replica transistor is coupled to the high-side replica transistor and the low-side output transistor. The comparator circuit is coupled to the high-side replica transistor and the low-side replica transistor, and is configured to compare a signal received from both the high-side replica transistor and the low-side replica transistor to a ramp signal.

A voltage regulation circuit includes a switching output terminal, a high-side output transistor, a low-side output transistor, a high-side replica transistor, a low-side replica transistor, and a comparator circuit. The high-side output transistor is configured to drive the switching output terminal. The low-side output transistor is configured to drive the switching output terminal. The high-side replica transistor is coupled to the high-side output transistor. The low-side replica transistor is coupled to the high-side replica transistor and the low-side output transistor. The comparator circuit is coupled to the high-side replica transistor and the low-side replica transistor, and is configured to compare a signal received from both the high-side replica transistor and the low-side replica transistor to a ramp signal.

A voltage regulator circuit included in a computer system may include multiple phase circuits each coupled to a regulated power supply node via a corresponding inductor. The phase circuits may modify a voltage level of the regulated power supply node using respective control signals generated by a digital control circuit that processes multiple data bits. An analog-to-digital converter circuit may compare the voltage level of the regulated power supply node to multiple reference voltage levels and sample the resultant comparisons to generate the multiple data bits.

A method of controlling a multi-phase power converter having a plurality of power stage circuits coupled in parallel, can include: obtaining a load current of the multi-phase power converter; enabling corresponding power stage circuits to operate in accordance with the load current, such that a switching frequency is maintained within a predetermined range when the load current changes; and controlling the power stage circuits to operate under different modes in accordance with the load current, such that the switching frequency is maintained within the predetermined range when the load current changes.