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| Number | Title | Issue Date |
| 8189305 | Auxiliary battery system An auxiliary power system for an electrical load in a vehicle electrical system includes an auxiliary battery, a thermal transducer in physical contact with the auxiliary battery, a charger circuit for controlling the charging of the battery in response to at least ... | 05/29/2012 |
| 8184412 | Electric power converter A voltage source converter including a string of series connected active semiconducting elements. The converter includes in case of an active semiconducting element failure a calculation element configured to calculate an operation dc voltage including a sum of dc r... | 05/22/2012 |
| 8184413 | Fault condition protection A regulator for a switched mode power supply includes switching regulator logic, a counter and a switching transistor. The switching regulator logic is coupled to receive a feedback signal and to generate a switching signal in response. The feedback signal periodica... | 05/22/2012 |
| 8174802 | Switching regulator and operations control method thereof A switching regulator is disclosed. In the switching regulator, when a power source voltage is lowered to a first predetermined value due to an overcurrent, a voltage boost operation is temporarily stopped, and a delay timer of a delay circuit is not reset. When the... | 05/08/2012 |
| 8169755 | Power supply system A power supply system is provided with devices of generating an electric power, controlling an amount of power generation, charging an electric power having been generated, converting an electric power having been generated, charging an electric power having been co... | 05/01/2012 |
| 8139327 | Semiconductor integrated circuit An integrated circuit formed on a semiconductor chip includes voltage regulators for stepping down an externally-supplied power voltage to produce an internal power voltage, and internal circuits which operate based on the internal power voltage. The voltage regulat... | 03/20/2012 |
| 8116045 | Circuitry and methodology for protecting a boost DC/DC converter Protection circuitry protects a boost converter coupled between input and output nodes for driving a load coupled to the output node. The protection circuitry may comprise a first circuit configured for monitoring a voltage at the output node, the voltage being caus... | 02/14/2012 |
| 8077437 | Integrated circuits and power supplies We describe a semiconductor-on-insulator integrated circuit die comprising a substrate bearing a power conditioning circuit, the power conditioning circuit comprising at least two power devices, a lateral power device and a vertical power device. The power condition... | 12/13/2011 |
| 8027130 | Fan system and power reverse protection apparatus thereof A fan system is electrically connected to a power source, and the fan system includes a power reverse protection apparatus, a voltage regulator, a driver, and a fan. The power reverse protection apparatus, electrically connected to the power source, includes a volta... | 09/27/2011 |
| 8018694 | Over-current protection for a power converter In one embodiment, a method is provided for a power converter system. The method includes: providing a primary current limit for the power converter system, wherein the power converter system has one or more transistors which can be switched on at a primary frequenc... | 09/13/2011 |
| 8009393 | Thermoelectric device utilized as voltage snubber An electric circuit includes a plurality of electric circuit elements. The circuit is prone to creating voltage spikes on a pair of spaced lines. A jumper line connects the pair of spaced lines. A thermoelectric element is connected on the jumper line such that the ... | 08/30/2011 |
| 7986499 | Current limiting circuit and voltage regulator using the same Techniques pertaining to a voltage regulator with a current limiting circuit having low quiescent current are disclosed. According to one aspect of the present invention, a current limiting circuit is provided for limiting a current passing through an output pass ci... | 07/26/2011 |
| 7978445 | Systems and apparatus relating to wind turbine electrical control and operation An electrical system for connecting a wind turbine to a power grid that includes: a frequency converter that converts electric power produced by a generator of the wind turbine into electric power that is synchronized with the electric power of the power grid; a tra... | 07/12/2011 |
| 7974049 | Over-current protection in linear regulators An integrated circuit radio transceiver and method therefor includes a linear regulator an output transistor for producing a current into an output node of the regulator wherein an amplification block is operable to produce a bias signal to a gate terminal of the ou... | 07/05/2011 |
| 7969694 | Diode loss detection for low side MOSFET of a synchronous output stage An embodiment of the invention relates to a switch-mode power converter including an inductor and an external rectifying diode. A series arrangement of a resistor and a switch are coupled in parallel with the external rectifying diode. The resistor and the switch en... | 06/28/2011 |
| 7965475 | Overheat protection circuit An overheat protection circuit of a semiconductor apparatus has an output current detecting circuit for detecting an output current of a constant voltage circuit; a temperature detector for detecting a temperature of the apparatus; an output current control circuit ... | 06/21/2011 |
| 7961444 | High voltage power supply A high voltage power supply includes a current overflow prevention unit to detect a change in a load of a device that is operated by an output power supplied from a transformer and to ground filtered signals that are input to first and second comparison units accord... | 06/14/2011 |
| 7952841 | Device for detecting malfunctions by manipulation of an internal voltage supply A device for determining an interference with a regulated voltage provided by a control loop with a unit for monitoring a control variable of the control loop and a unit for generating a notification signal if the control variable or a change in the time of the cont... | 05/31/2011 |
| 7948720 | Voltage regulator with transient recovery circuit A power controller having good transient performance and including a voltage regulator and one or more (K) transient recovery circuits is described. The voltage regulator receives a supply voltage and generates a regulator output signal used to generate K output vol... | 05/24/2011 |
| 7936540 | DC-DC converters having improved current sensing and related methods A DC-DC converter includes a chip including an error amplifier, a pulse width modulator (PWM), and an inductor driven by said PWM in series with an output node (VOUT), wherein a load current flows through the inductor. A circuit for sensing the load curre... | 05/03/2011 |
| 7920364 | Power supply with adjustable outputted voltage A power supply with adjustable outputted voltage includes an AC power input processing circuit and a DC power input processing circuit. The AC power input processing circuit has at least one voltage adjuster that is electrically connected with the DC power input pro... | 04/05/2011 |
| 7881027 | Fault condition protection A regulator for a switched mode power supply includes switching regulator logic, a counter and a logic gate. The switching regulator logic is coupled to receive a feedback signal and to generate a switching signal in response. The feedback signal periodically cycles... | 02/01/2011 |
| 7881026 | Semiconductor integrated circuit An integrated circuit formed on a semiconductor chip includes voltage regulators for stepping down an externally-supplied power voltage to produce an internal power voltage, and internal circuits which operate based on the internal power voltage. The voltage regulat... | 02/01/2011 |
| 7843670 | Isolated switched maintain power signature (MPS) and fault monitoring for power over Ethernet One embodiment monitors a line-side electrical current provided by a power sourcing equipment (PSE) port to a powered device (PD), the PSE port having a power-isolation transformer with a primary coil on an isolated side and a secondary coil on a line side. A switch... | 11/30/2010 |
| 7839609 | Auxiliary lighting circuit for a gaseous discharge lamp A non-arcing electrical switch for use with an auxiliary light source for a gaseous discharge lamp includes a current sensing component, a timer power component, an off-delay timer, a voltage control component, and a phase control component. When the light output fr... | 11/23/2010 |
| 7835119 | Short-circuit control in the inductance of a voltage step-up converter The protection of an inductance of a voltage step-up converter, comprising a first switch with an inverted input logic between the inductance and a terminal of connection of a load to be supplied, the control electrode of which can be connected either to the inducta... | 11/16/2010 |
| 7821750 | Voltage converter for preventing switch device from being damaged by voltage spike by utilizing protection circuit A voltage converter includes an electronic induction device, a switch device, a protection circuit, and a control circuit. The switch device, electrically connected to the electronic induction device, is utilized for selectively establishing an electrical connection... | 10/26/2010 |
| 7800870 | Power protection apparatus and electronic control unit A power protection apparatus including: a switch unit connected in series in a power supply line from a power source to a DC regulator; a first short-circuit detector for detecting a short circuit based on an output voltage value of the DC regulator obtained by maki... | 09/21/2010 |
| 7800869 | Apparatus and method for power supply overvoltage disconnect protection A circuit for voltage transient protection is provided. The circuit includes an input monitor circuit, an input transistor, and a voltage regulator. The input transistor is connected between the input voltage and the input voltage terminal of the voltage regulator. ... | 09/21/2010 |
| 7796365 | Method of improved current sensing in DC-DC converters A DC-DC converter includes a chip including an error amplifier and a pulse width modulator (PWM) having an input connected to an output of the error amplifier, and an inductor driven by said PWM in series with an output node (VOUT) of the converter, where... | 09/14/2010 |
| 7791847 | Fault-sensing and protecting apparatus for soft start circuit of inverter and method for the same Fault-sensing and protecting apparatus for soft start circuit of inverter and method for the same are proposed. The soft start circuit of inverter includes a soft-starting resistor and a relay. The relay has a normally-open end connected to the soft-starting resisto... | 09/07/2010 |
| 7787222 | Over-voltage protection for voltage regulator modules of a parallel power system A protection circuit for a parallel power system having at least two parallel coupled voltage regulators is disclosed. The protection circuit includes at least two isolation control circuits, each control circuit being coupled to a respective voltage regulator. Each... | 08/31/2010 |
| 7773350 | Fault condition protection A power converter controller circuit is disclosed. In one aspect, a power converter controller circuit includes a control circuit to generate a switching signal to be coupled to a power switch to control power delivered to an output of a power converter. A timing ci... | 08/10/2010 |
| 7751157 | Protection circuit and method therefor In one embodiment, a protection circuit includes a linear regulator remains enabled during a portion of a time while limiting an output voltage of the linear regulator to a first value. ... | 07/06/2010 |
| 7751158 | Voltage regulator module control circuit An exemplary voltage regulator module (VRM) control circuit includes a VRM providing a plurality of phases, each of the phases connected to a control terminal of a corresponding electric switch; a comparator comprising a non-inverting terminal connected to a first p... | 07/06/2010 |
| 7715157 | Semiconductor device and trimming method of the same A small-scale semiconductor device having several trimming portions is disclosed. The device includes an auxiliary voltage regulator circuit outputting an output voltage and having a first trimming unit for adjusting the output voltage output from the auxiliary volt... | 05/11/2010 |
| 7656623 | Methods and apparatus for charging a battery in a peripheral device A power manager for managing power delivered to a battery operated peripheral device is disclosed. The power manager includes an input current limiter arranged to suppress a power surge associated with an insertion event by a power cable arranged to provide an exter... | 02/02/2010 |
| 7656624 | IC power protection circuit An IC power protection circuit functions as a surge protection circuit and reverse connection protection circuit. The IC power protection circuit includes an error amplification circuit, positioned and integrated within an integrated circuit and a transistor positio... | 02/02/2010 |
| 7630178 | Semiconductor integrated circuit An integrated circuit formed on a semiconductor chip includes voltage regulators for stepping down an externally-supplied power voltage to produce an internal power voltage, and internal circuits which operate based on the internal power voltage. The voltage regulat... | 12/08/2009 |
| 7602593 | Semiconductor device A semiconductor for suppressing power supply resonance caused by the external noise and preventing fluctuation of the power supply voltage. The semiconductor device includes first and second power supply wires for supplying power supply voltages, a variable capacito... | 10/13/2009 |
