A power supply circuit can include: a constant current control circuit configured to receive a first voltage and a first current from a power supply, and to generate a second voltage and a second current that are substantially constant; a shunt circuit, where when the second current is greater than the output current, the shunt current circuit is configured to shunt the second current, and when the second current is less than or equal to the output current, the shunt circuit stops operating; and an energy storage circuit, where when the second current is greater than the output current, the energy storage circuit is configured to store energy, and when the second current is less than or equal to the output current, the energy storage circuit is configured to release energy and provide power for the load together with the constant current control circuit.

An isolated DC/DC converter includes a primary stage, a transformer circuit, a secondary stage, an active clamp, a first current sense node, and a second current sense node. The primary stage includes a primary switching inverter configured to invert the source DC voltage into a high-frequency alternating current (AC) voltage. The transformer circuit adjusts an AC voltage level of the high-frequency AC voltage and outputs an adjusted AC voltage. The secondary stage includes a secondary switching converter to convert the adjusted AC voltage into a secondary voltage, and the active clamp is configured to clamp the secondary voltage to provide an output DC voltage. The first current sense node is included in the primary stage conducts a source current having a first current level, and the second current sense node is included in the secondary stage and conducts a clamp current having a second current level.

A power supply circuit can include: a constant current control circuit configured to receive a first voltage and a first current from a power supply, and to generate a second voltage and a second current that are substantially constant; a shunt circuit, where when the second current is greater than the output current, the shunt current circuit is configured to shunt the second current, and when the second current is less than or equal to the output current, the shunt circuit stops operating; and an energy storage circuit, where when the second current is greater than the output current, the energy storage circuit is configured to store energy, and when the second current is less than or equal to the output current, the energy storage circuit is configured to release energy and provide power for the load together with the constant current control circuit.

A power supply comprising a DC to DC converter coupled to a current limit controller and an accumulator. The accumulator discharges while the current limit controller limits the current draw of the DC to DC converter.

An isolated DC/DC converter includes a primary stage, a transformer circuit, a secondary stage, an active clamp, a first current sense node, and a second current sense node. The primary stage includes a primary switching inverter configured to invert the source DC voltage into a high-frequency alternating current (AC) voltage. The transformer circuit adjusts an AC voltage level of the high-frequency AC voltage and outputs an adjusted AC voltage. The secondary stage includes a secondary switching converter to convert the adjusted AC voltage into a secondary voltage, and the active clamp is configured to clamp the secondary voltage to provide an output DC voltage. The first current sense node is included in the primary stage conducts a source current having a first current level, and the second current sense node is included in the secondary stage and conducts a clamp current having a second current level.

A power supply comprising a DC to DC converter coupled to a current limited controller and an accumulator is disclosed, where the DC to DC converter may be a switch-mode DC to DC converter. The current limit controller may be configured to limit a current draw of the switch-mode DC to DC converter. The accumulator may be configured to discharge to an output terminal of the DC to DC converter while the current limit controller limits the current draw of the DC to DC converter.

An electronic converter (1) comprises a pair of input terminals (IN+, IN) particularly suitable to be connected to a power supply unit (10) with a constant electric current output, and a pair of output terminals (OUT+, OUT) particularly suitable to be connected to an electrical load (5). The electronic converter (1) further comprises an electric current conversion stage (2) connected to said input terminals (IN+, IN) and to said output terminals (OUT+, OUT), and a controller (3) connected to the electric current conversion stage (2) and particularly suitable to control the electrical energy output from the electronic converter (1).

Serial arranged circuits allow multiple different circuit nodes to receive power with a single conductor line carrying current. Data can be transmitted to the serially arranged circuit nodes by modulating the current on the single conductor line. However, switching transistors to modulate current can consume energy. To reduce the switching losses, a double ended driver circuit is disclosed. The doubled ended driver circuit includes switching capacitors and inductors at both ends of a serial string of circuit nodes.

A power supply comprising a DC to DC converter coupled to a current limit controller and an accumulator. The accumulator discharges while the current limit controller limits the current draw of the DC to DC converter.

Embodiments of the present invention relate to the battery monitoring field, and provide a load power supply circuit and a terminal. The load power supply circuit includes a charging manager and a step-up circuit. The charging manager includes a first pin, a second pin, and a third pin. The first pin of the charging manager is electrically connected to a load, and the second pin of the charging manager is electrically connected to a battery. The step-up circuit includes a first end, a second end, and a control end. The first end of the step-up circuit is electrically connected to the load, the second end of the step-up circuit is electrically connected to the battery, and the control end of the step-up circuit is electrically connected to the third pin of the charging manager.