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US20090040794 |
Time-Multiplexed Multi-Output DC/DC Converters and Voltage Regulators
A boost switching converter with multiple outputs includes an inductor is connected between an input supply (typically a battery) and a node Vx. A low-side switch connects the node Vx and ground.... |
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US20120113690 |
METHOD AND APPARATUS FOR A HIGH VOLTAGE POWER SUPPLY CIRCUIT
A power switch is switched to regulate an output of a power converter. A feedback signal representative of a power converter output during a feedback portion of an off time of the power switch is... |
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US20130194837 |
CONTROL CIRCUIT AND METHOD FOR A FLYBACK CONVERTER TO COMPENSATE FOR AN ENTRY POINT OF A BURST MODE
A control circuit and method are provided for a flyback converter converting an input voltage to an output voltage, to compensate for an entry point of a burst mode of the flyback converter, so... |
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US20140063867 |
APPARATUS AND METHOD FOR SENSING OF ISOLATED OUTPUT
A switched-mode power supply includes an energy transfer element coupled between a primary side and a secondary side. A first main terminal of a switch is coupled to the energy transfer element... |
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US20120187869 |
POWER SUPPLY DEVICE
In various embodiments, an electrical power supply device may include a transformer with a primary winding having coupled thereto a main switch switchable on and off to connect and disconnect said... |
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US20140204628 |
MULTI-STAGE SAMPLING CIRCUIT FOR A POWER CONVERTER CONTROLLER
An example controller for a power converter includes a track and hold circuit, a sample and hold circuit, and drive logic. The track and hold circuit receives a signal that is representative of an... |
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US20130235623 |
TWO-SWITCH FLYBACK POWER CONVERTERS
A two-switch Flyback power converter is disclosed. The two-switch Flyback power converter comprises a transformer, a first switch, a second switch, and a control circuit. The transformer includes... |
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US20100054001 |
AC/DC Converter with Power Factor Correction
A power converter is configured for usage in a power factor correction system. The power converter comprises a transformer with a primary winding and a secondary winding which isolates a primary... |
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US20130016535 |
Controller for a Power Converter and Method of Operating the Same
A control system for a power converter with reduced power dissipation at light loads and method of operating the same. In one embodiment, the control system includes a first controller configured... |
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US20140211519 |
SINGLE-STAGE PFC CONVERTER WITH CONSTANT VOLTAGE AND CONSTANT CURRENT
An exemplary embodiment of a switching controller for a power converter is provided. The switching controller for a power converter comprises: a power device, an input circuit and a compensation... |
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US20140085943 |
Controller with Quasi-Resonant Mode and Continuous Conduction Mode and Operating Method Thereof
The present invention relates to a controller with quasi-resonant mode and continuous conduction mode and an operating method thereof. The controller comprises: a transformer, a switching unit, a... |
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US20090316445 |
High Voltage Power Supply
This invention pertains to the control of high voltage power, and in particular to control of high voltage power from low voltage sources while reducing unwanted self resonance in the windings of... |
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US20130201730 |
Alternating Parallel Fly Back Converter with Alternated Master-Slave Branch Circuits
An alternating parallel flyback converter with alternated master and slave circuit branches is provided. The flyback converter includes a master flyback circuit branch, a slave flyback circuit... |
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US20110194316 |
SWITCHING POWER SUPPLY DEVICE
A switching power supply device including: a switching element which performs a switching operation; an output voltage generation circuit; a transformer reset detection circuit which generates a... |
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US20140268924 |
CONTROL CIRCUIT FOR FLYBACK POWER CONVERTER AND CALIBRATION METHOD THEREOF
A control circuit of a flyback power converter includes a first reference signal generating circuit for generating a first reference signal; a reference signal adjusting circuit for generating an... |
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US20140340944 |
METHOD PROVIDING SHORT-CIRCUIT PROTECTION AND FLYBACK CONVERTER UTILIZING THE SAME
A method providing short-circuit protection and a flyback converter utilizing the same wire are disclosed. The a method, adopted by a flyback converter, includes a transformer, including... |
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US20130182464 |
DC Converter With Low Starting Voltage
The present invention relates to an electronic circuit with which input voltages at an input of the circuit are converted into higher output voltages at an output of the circuit, whereby the... |
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US20110157925 |
ENERGY-SAVING POWER CONVERTER HAVING SUSPEND MODE
The present invention relates to an energy-saving power converter having a suspend mode. The power converter includes an output port for being electrically connected to the electricity consuming... |
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US20120044724 |
SWITCHING POWER SUPPLY APPARATUS
A switching power supply apparatus that can precisely control the overload protection voltage is provided. The apparatus includes a secondary current on-period detection circuit for detecting the... |
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US20110199796 |
STRUCTURE OF A POWER SUPPLY
An improved structure of a power supply is based on an emitter-switched PWM controller and special structure transformer. An improved structure of a power supply mainly describes two primary side... |
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US20140028187 |
POWER SUPPLY DEVICE, LIGHTING DEVICE, LIGHTING FIXTURE USING THE SAME, AND VEHICLE
In a power supply device according to the embodiment, a second capacitor is inserted between a terminal of a capacitor at the high voltage side and an input terminal. Therefore, when earth fault... |
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US20120014142 |
POWER CONVERSION APPARATUS FOR CORRECTING POWER FACTOR
A power conversion apparatus for correcting power factor, which converts an input voltage to an output voltage, comprises: an inductive component, a unidirectional conducting component, a switch,... |
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US20120218787 |
STABILIZED VOLTAGE POWER SUPPLY
Disclosed is a stabilized voltage power supply comprising an A/D converting circuit configured to convert an alternate current voltage received from an external power supply to an initial direct... |
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US20100202166 |
ENERGY SAVING LUMENS SETTABLE DEVICE FOR FLUORESCENT LAMPS
A circuit to supply an AC voltage to a fluorescent lamp load from an AC supply converts the supply to DC, boosts the voltage in a converter and then drives an inverter from the smoothed boosted... |