| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 323267000 | Including plural loads commonly controlled | 19 |
| 20080278124 | METHOD AND CIRCUIT FOR GENERATING OUTPUT VOLTAGES FROM INPUT VOLTAGE - A power supply circuit that accurately generates output voltages with the same regulator includes a regulator for generating a first output voltage from an input voltage. A first switch circuit, connected to the regulator, selectively outputs the first output voltage of the regulator as a second output voltage from the power supply circuit. A pre-charge circuit, connected to the regulator and the first switch circuit, generates the second output voltage from the input voltage before the first output voltage of the regulator is output as the second output voltage while controlling the first switch circuit. | 11-13-2008 |
| 20090015218 | CURRENT-FED MULTIPLE-OUTPUT POWER CONVERTER - A power converter is disclosed. According to one embodiment, the power converter includes a first stage including a current source for generating a current signal, and a second stage. The second stage includes n output circuits coupled to the current source for converting the current signal into n corresponding output voltages. Each of the n output circuits includes an output switch responsive to a corresponding n | 01-15-2009 |
| 20090167264 | DC-DC CONVERTER USABLE FOR DUAL VOLTAGE SUPPLY - A converter has a single inductor with a first terminal connectable to a first terminal of the supply input through a first power transistor and a second terminal connectable to a second terminal of the supply input through a second power transistor. A first rectifier element connects the first terminal of the inductor with a first output terminal, and a second rectifier element connects the second terminal of the inductor with a second output terminal. A resistive voltage divider is connected between the first and second output terminals. A control circuit uses an input from the voltage divider as a reference input voltage and provides an output current to the second terminal of the supply input in response to any voltage difference between the reference input voltage and the second terminal of the supply input. This provides a virtual common reference potential at the second terminal of the supply input, which is thus a common ground (GND) terminal. In the ON phase of both power transistors, the inductor is charged with current from the supply input. In the OFF phase (both power transistors are OFF), the energy stored in the inductor is supplied to both of the positive and the negative supply output through the rectifier elements, the output current in fact flowing almost exclusively between the positive and negative supply outputs. Thus, in the OFF phase, the inductor is entirely isolated from the supply input and the supply outputs are in no way affected by any transients or fluctuations in the supply input voltage. | 07-02-2009 |
| 20090251116 | METHOD AND APPARATUS FOR POWER CONVERSION AND REGULATION - Techniques are disclosed to control a power converter with multiple output voltages. One example regulated power converter includes a an energy transfer element coupled between a power converter input and first and second power converter outputs. A switch is coupled between the power converter input and the energy transfer element such that switching of the switch causes a first output voltage to be generated at the first power converter output and a second output voltage to be generated at the second power converter output. A current in the energy transfer element is coupled to increase when a voltage across the energy transfer element is a difference between an input voltage at the power converter input and the first output voltage. The current in the energy transfer element is coupled to decrease when the voltage across the energy transfer element is a sum of the first and second output voltages. | 10-08-2009 |
| 20090278515 | MULTIPLE OUTPUT VOLTAGE REGULATOR - A multiple output voltage regulator includes a voltage regulator amplifier, a first device, and a second device. The voltage regulator amplifier includes a first input configured to receive a reference voltage and an output. The first device includes a first terminal, a second terminal, and a control terminal. The control terminal of the first device is coupled to the output of the voltage regulator amplifier, the first terminal of the first device is coupled to a power supply terminal, and the second terminal of the first device is coupled to a second input of the voltage regulator amplifier (to provide negative feedback) and is configured to be coupled to one side of a first load. The second device includes a first terminal, a second terminal, and a control terminal. The control terminal of the second device is coupled to the output of the voltage regulator amplifier, the first terminal of the second device is coupled to a power supply terminal, and the second terminal of the second device is configured to be coupled to one side of a second load. | 11-12-2009 |
| 20090295346 | METHOD AND APPARATUS FOR IMPLEMENTING AN UNREGULATED DORMANT MODE IN A POWER CONVERTER - A control circuit for use in a power converter with an unregulated dormant mode of operation is disclosed. In one aspect a power converter includes a drive signal generator coupled to generate a drive signal to control switching of a power switch to be coupled to the control circuit to regulate a flow of energy to a power converter output in response to an energy requirement of one or more loads to be coupled to the power converter output. An unregulated dormant mode control circuit is included and is coupled to render dormant the drive signal generator thereby ceasing the regulation of the flow of energy to the power converter output by the drive signal generator when the energy requirement of the one or more loads falls below a threshold. The drive signal generator is coupled to be unresponsive to changes in the energy requirements of the one or more loads when dormant. The unregulated dormant mode control circuit is coupled to power up the drive signal generator after a period of time has elapsed. The drive signal generator is coupled to again be responsive to changes in the energy requirement of the one or more loads after the period of time has elapsed. | 12-03-2009 |
| 20100194359 | MULTI-OUTPUT DC-DC CONVERTER - A DC-to-DC converter for using a single input supply to generate a plurality of power outputs at different voltages (Vout | 08-05-2010 |
| 20100320975 | QUASI-CONTINUOUS VOLTAGE REGULATOR WITH DUAL POLARITY OUTPUTS - A controller includes a hysteretic circuit that provides a first ON level pulse when a corresponding first negative regulated voltage rises above a respective first voltage threshold. Similarly, a second ON level pulse is provided when a corresponding second positive regulated voltage falls below a respective second voltage threshold. The hysteretic circuit provides an OFF level pulse when one of first and second switch currents increases above a current threshold. A switch control circuit receives the first and second ON level pulses and the OFF level pulse, and provides first and second switch control outputs to separately regulate the first and second regulated voltages. | 12-23-2010 |
| 20110215778 | SOLAR POWER CONVERTER WITH MULTIPLE OUTPUTS AND CONVERSION CIRCUIT THEREOF - A solar power converter with multiple outputs and conversion circuit thereof is disclosed. One embodiment of the solar power converter includes a power input terminal, a solar power unit and a solar power conversion circuit with multiple outputs including a primary circuit, a first output circuit, a second output circuit, and a transformer with a first auxiliary winding, a second auxiliary winding and a primary winding. An output terminal of the second output circuit is connected to the power input terminal in series for providing a third output voltage to a load unit. The third output voltage is a sum of an input voltage generated by the solar power unit and a second output voltage generated by the second output circuit. | 09-08-2011 |
| 20120013314 | VOLTAGE REGULATOR SYSTEM - The present disclosure includes circuits, systems and methods for regulating voltage. One voltage regulator system embodiment includes a voltage regulator having an output and a number of stages coupled in parallel to the output of the voltage regulator. Each stage includes a source follower circuit, and a sample and hold circuit coupled in series between the output of the voltage regulator and an input of the source follower circuit. | 01-19-2012 |
| 20120139511 | POWER ADAPTER HAVING MULTI-DC POWER CONNECTORS - The present invention discloses a power adapter has a power converter, a power output cable, a first DC power connector and multiple second DC power connectors. The power converter has a casing, a power converting circuit mounted in the casing, and an AC power inlet and DC power outlet electronically connected to the power converting circuit. The power output cable has a DC output and selective connector having two DC power pinholes and multiple selective pinholes surrounding the two DC power pinholes. The first DC power connector has two DC voltage pins and is selectively connected to the DC output and selective connector. Each of the second DC power connectors has a body, a DC plug formed on the body, two DC voltage pins formed on the body and one jumper pin formed on the body and corresponding to the selective pinholes of the power output cable to change voltage of the DC power output from the power converting circuit. | 06-07-2012 |
| 20120256606 | Switching Circuit - A multiple output switching circuit ( | 10-11-2012 |
| 20120274291 | MULTI-PATH CONSTANT CURRENT DRIVING CIRCUIT - A multi-path constant current drive circuit includes a DC/AC converter, a main transformer and at least two rectifying and filtering units. The main transformer includes at least one assistant side winding with a tap; together with the assistant side winding of the main transformer, each of the at least two rectifying and filtering units respectively forms a power supply loop; each power supply loop includes a first rectifying loop and a second rectifying loop, which are relatively used for the rectification of the positive and the negative half-cycle alternating voltage; a current-equalizing transformer is arranged between the adjacent first power supply loop and second power supply loop, the windings of the current-equalizing transformer are respectively in the rectifying loops contained in the first power supply loop and the second power supply loop, thus realizing the current equalization between the different rectifying loops in which the adjacent rectifying and filtering units are contained. The multi-path constant current drive circuit performs a good current equalization, and can reduce the volume of the current-equalizing transformer and decrease the cost. | 11-01-2012 |
| 20130082668 | SINGLE-INDUCTOR MULTIPLE-OUTPUT DC TO DC CONVERTER - A DC to DC converter includes a switching circuit and a controller. The switching circuit includes an inductor coupled to first and second voltage supply nodes and to a plurality of output loads. The controller is configured to monitor a current through the inductor and to selectively couple the inductor to each of the plurality of output loads such that at least one of the following criteria is met: 1) an average current through the inductor is minimized for the particular output loads coupled to the switching circuit, or 2) minimize a number of times the switching circuit is switched during a charging period for the particular output loads coupled to the switching circuit. | 04-04-2013 |
| 20130154587 | ARRANGEMENTS OF CURRENT CONDUCTION FOR SIMO CONVERTERS - A system includes a single-inductor-multiple-out (SIMO) converter that includes storage circuitry in communication with a plurality of output channels, and a controller that is configured to output one or more signals to alternatingly conduct current through the output channels over a plurality of switching cycles. The controller may determine fixed ratios of channel conduction periods between the plurality of output channels and set channel conduction periods for each switching cycle based on the fixed ratios. In addition or alternatively, the controller may determine an arrangement of orders in which to conduct current over the switching cycles. The arrangement may include an order for a current switching cycle that is a reverse order of an order for a previously switching cycle. | 06-20-2013 |
| 20130154588 | INTEGRATING CIRCUITRY FOR MEASURING CURRENT IN A SIMO CONVERTER - A system includes a single-inductor-multiple-out (SIMO) converter that includes a plurality of output channels, each channel comprising a load, and integrating circuitry in communication with the output channels. The integrated circuitry may be configured to output a signal indicative of a time-accumulated average amount of current drawn through the loads over a sample period. The signal may be used to compare the average current drawn through the output channel with a desired current draw, and to determine whether to change one or more timing parameters used to control the current flow through the SIMO converter. | 06-20-2013 |
| 20130162228 | Single Inductor Multiple Output Power Converter - A novel method to operate and control single inductor multiple output switching power converter is presented. The method includes the means for generating one or more synthetic ripple signals and operating the converter at constant switching frequency allowing high frequency operation, maintaining stability in all conditions with minimum cross regulation between the outputs independently on the levels of load present at the outputs. The method further includes means for setting the maximum frequency of multiplexing the energy stored in the inductor between the various outputs reaching the desired compromise between the value of the output capacitors, the switching frequency of the output power devices and the acceptable output voltage ripple. | 06-27-2013 |
| 20150311783 | CHARGE-RECYCLING CIRCUITS - In one embodiment, a circuit comprises a first load circuit coupled to a first input voltage. A current sinking circuit is coupled to an output of the first load circuit. A second load circuit is coupled to ground. A current sourcing circuit is coupled between a second input voltage and an output of the second load circuit. A charge-recycling circuit is coupled between the output of the first load circuit and the output of the second load circuit to provide current from the current sinking circuit to the output of the current sourcing circuit to reduce current through the current sourcing circuit. The charge-recycling circuit can be a charge pump. | 10-29-2015 |
| 20180024581 | SPACE AND POWER-SAVING MULTIPLE OUTPUT REGULATION CIRCUITRY | 01-25-2018 |
