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| Number | Title | Issue Date |
| 8148969 | Circuit arrangement for the regulation of a current through a load A circuit arrangement (1) for the regulation of a current (IL) through a load (RL) comprises: a resistance (RS), through which a load current (IL) flows and across which a voltage (VS) drops, which serves... | 04/03/2012 |
| 8129976 | Load control device having a gate current sensing circuit A gate drive circuit for a controllably conductive device, such as a triac, includes a trigger circuit for conducting a gate current through a control input of the controllably conductive device, and a sense circuit operable to generate a control signal representati... | 03/06/2012 |
| 8093880 | Programmable voltage reference with a voltage reference circuit having a self-cascode metal-oxide semiconductor field-effect transistor structure A programmable voltage reference includes a temperature compensated current source and a voltage reference circuit. The temperature compensated current source includes an output configured to provide a reference current. The voltage reference circuit includes an inp... | 01/10/2012 |
| 8063623 | Analog compensation circuit The present disclosure relates to a compensation circuit for providing compensation over PVT variations within an integrated circuit. Using a low voltage reference current source, the compensation circuit generates directly, from an on-chip reference low voltage sup... | 11/22/2011 |
| 8044652 | Constant current control circuit A constant current control circuit is disclosed. Pads are connected with a common power supply terminal. Shunt resistors are located outward of a region containing Pch type MOS transistors. A temperature increase of the shunt resistors due to a temperature increase ... | 10/25/2011 |
| 8026709 | Voltage generating apparatus A voltage generating apparatus including a voltage generator and a current splitter is provided. The voltage generator has an output node, and generates a first output voltage from the output node. The first output voltage rises when the temperature rises and the cu... | 09/27/2011 |
| 8004264 | Voltage converter A voltage converter to convert a high voltage to a low voltage is provided. The voltage converter comprises: a current mirror, a current bias, a plurality of loads and a low voltage output. The current mirror comprises a first PMOS and a second PMOS, wherein the sou... | 08/23/2011 |
| 7990128 | Circuit and method for pulling a potential at a node towards a feed potential Embodiments of the invention concern a circuit for pulling a potential at a node towards a feed potential which is present at a potential feed. The circuit has a first transistor with a controllable conductive path and in addition a resistive element. The controllab... | 08/02/2011 |
| 7973525 | Constant current circuit Provided is a constant current circuit capable of supplying a stable constant current. Even when K values of NMOS transistors vary due to manufacturing fluctuations in semiconductor devices, a voltage generated across a resistor is always a threshold voltage differe... | 07/05/2011 |
| 7965072 | Current source and control device A current source contains a first switching element which is provided with a control input and is embodied and arranged in such a way that an output flow on an output side of a current source can be adjusted according to a control signal at the control input. The cu... | 06/21/2011 |
| 7960959 | Input current controller arrangement and method An arrangement having a first converting element configured to convert an input current linearly into an auxiliary current, a second converting element configured to convert the auxiliary current into an output voltage, and a separating element configured to separat... | 06/14/2011 |
| 7952341 | Multi-stable electronic circuit state control Apparatus and methods of controlling operating states of multi-stable electronic circuits are disclosed. In one aspect, an apparatus includes a bandgap reference circuit having an operating state and a latched off state. The bandgap reference circuit includes an amp... | 05/31/2011 |
| 7940036 | Voltage comparison circuit, and semiconductor integrated circuit and electronic device having the same A disclosed voltage comparison circuit for detecting a voltage difference of two input signals includes one or more differential amplifier circuits, each of which has a differential pair of first and second input transistors each having an electrode to which a corre... | 05/10/2011 |
| 7928716 | Power supply modulation Embodiments of methods and apparatus for modulating a power source are disclosed. In some embodiments, a method may comprise predicting, by a current control logic, a potential voltage transient on a power supply bus, and modulating, by the current control logic, a ... | 04/19/2011 |
| 7915882 | Start-up circuit and method for a self-biased zero-temperature-coefficient current reference A current reference circuit is disclosed. A small startup current is defined as the base current into a bipolar transistor with its collector-emitter path connected in series with a resistor between the power supply voltage and ground. This startup current is conduc... | 03/29/2011 |
| 7884593 | Differential and symmetrical current source A controlled, symmetrical, stable current source that can power floating resistive loads, eliminates the need to connect the load directly to either a power supply or ground and protects the load against overpower should either or both sides of the load be shorted t... | 02/08/2011 |
| 7884594 | Method and apparatus for distribution of a voltage reference in integrated circuits Inventive embodiments described here provide for accurately distributing a voltage reference to multiple cores of an integrated circuit (IC). A quasi-differential interface is used to transmit the voltage reference, and a virtual ground is established at a receiver ... | 02/08/2011 |
| 7834609 | Semiconductor device with compensation current A semiconductor device is disclosed. In one embodiment, the semiconductor device includes a first resistor, a second resistor, and a transistor. The second resistor is configured to receive a current via the first resistor. The transistor is configured to be driven ... | 11/16/2010 |
| 7795856 | Reference voltage generator and voltage regulator incorporating same A reference voltage generator includes a first field effect transistor with n-type heavily doped gate structure and a second field effect transistor with p-type heavily doped gate structure. The first transistor is configured to have a gate and a substrate gate conn... | 09/14/2010 |
| 7772825 | Current source providing large supply current A current source comprises a current driver comprising a current generator and a first resistor serially coupled at a first node, a level shift unit located between the first node and a second node to generate a rated voltage difference between the second and the fi... | 08/10/2010 |
| 7683599 | Voltage control circuits A voltage control circuit is provided. The voltage control circuit comprises a control voltage source, a current generating unit, and an output voltage generating unit. The control voltage source inputs a single end control voltage. The current generating unit coupl... | 03/23/2010 |
| 7667448 | Reference voltage generation circuit A reference voltage generation circuit of the present invention includes: a band gap reference-type current generation circuit for controlling each of currents flowing through a first current path and a second current path, which are extending from a first node to a... | 02/23/2010 |
| 7626373 | Method and apparatus for a voltage triggered current sink circuit A current sink circuit is disclosed. An apparatus according to aspects of the present invention includes a sensing element, a pass element coupled to the sensing element and a setting element coupled to the pass element. The setting element provides both a voltage t... | 12/01/2009 |
| 7535212 | Constant-current circuit and system power source using this constant-current circuit A constant-current circuit and a system power source using this constant-current circuit are disclosed, which can generate plural highly accurate constant currents and supply them as bias currents by reducing variations caused by a change of a manufacturing process ... | 05/19/2009 |
| 7531998 | Temperature sensing circuit A temperature sensing circuit includes first, second and third proportional to absolute temperature (PTAT) units, and first and second subtracters. The first PTAT unit generates a first output voltage based on a reference current and a current of N times the referen... | 05/12/2009 |
| 7504813 | High precision power detector A power detector having temperature compensation for improved measurement performance includes a pair of rectifier transistors coupled to a differential input signal biased by a first temperature dependent current. An output of the pair of rectifier transistors prov... | 03/17/2009 |
| 7498794 | Method and system for sensing current independently of variations in operating conditions A method for sensing current independently of variations in operating conditions is provided that includes generating a switch signal at a switching element. A reference signal is generated at a reference signal generator that is operable to track the switching elem... | 03/03/2009 |
| 7468600 | Voltage regulation unit with Zener diode and voltage regulation device thereof A voltage regulation unit with a Zener diode receives a driving voltage outputted from a charge pump and controls a level of the driving voltage to regulate the driving voltage. The voltage regulation unit includes a current mapping unit, a Zener diode and a biasing... | 12/23/2008 |
| 7449871 | System for setting an electrical circuit parameter at a predetermined value A system is disclosed for setting an electrical circuit parameter at a predetermined value. The system comprises a first electrical component having a first electrical parameter associated therewith. Sensing means generate a control signal indicative of the value of... | 11/11/2008 |
| 7443153 | Method and apparatus for a voltage triggered current sink circuit A current sink circuit is disclosed. An apparatus according to aspects of the present invention includes a sensing element, a pass element coupled to the sensing element and a setting element coupled to the pass element. The setting element provides both a voltage t... | 10/28/2008 |
| 7436244 | Circuit for reference current and voltage generation A circuit for reference current and voltage generation is provided. The circuit comprises a current bias circuit and a voltage reference circuit. Wherein, the current bias circuit receives an enable signal, provides a reference current, a bias signal and a startup s... | 10/14/2008 |
| 7411441 | Bias circuitry A biasing circuit comprising a first switching device having a control terminal, and first and second switching terminals. The first switching terminal being connected to a supply voltage, the second switching terminal being connected through a first resistive eleme... | 08/12/2008 |
| 7411442 | Constant current circuit operating independent of temperature In CMOS processing, there may be a case in which a resistance element, such as a poly-silicon resistance, or the like, may be formed which has negative temperature characteristics. In a constant current circuit using this resistance element, a constant current outpu... | 08/12/2008 |
| 7372316 | Temperature compensated reference current generator A first order temperature compensated reference current generator includes a current device providing a controlled current, a startup circuit connected to the current device for initiating operation of the current device, and a current definition mechanism driven by... | 05/13/2008 |
| 7369143 | Display device A display device according to the present invention includes a switching regulator control circuit formed of TFTs. A digital switching regulator control circuit is composed of an AD converter circuit, a CPU, a pulse generation circuit or the like. An analog switchin... | 05/06/2008 |
| 7368989 | High bandwidth apparatus and method for generating differential signals An apparatus and method for generating differential signals. The apparatus includes a first operational amplifier receiving a first signal, a second operational amplifier receiving a second signal, and a first transistor. The first transistor includes a first gate, ... | 05/06/2008 |
| 7365589 | Bandgap reference circuit A bandgap reference circuit, taking two or more power supplies as the input power supply for outputting a reference voltage, includes a first reference circuit, a second reference circuit, a power selection circuit and a switch circuit. The first and second referenc... | 04/29/2008 |
| 7362084 | Fast voltage regulators for charge pumps A digital multilevel memory system includes a charge pump and a voltage regulator for generating regulated high voltages for various memory operations. The charge pump may include a plurality of boost circuits to boost the output of the charge pump during a fast sta... | 04/22/2008 |
| 7358792 | Discharge device and DC power supply system A discharge device and DC power supply system for preventing erroneous operation of a series regulator. The discharge circuit includes a voltage comparison circuit for comparing input power supply voltage and output power supply voltage of the series regulator. The ... | 04/15/2008 |
| 7352163 | Early effect cancelling circuit, differential amplifier, linear regulator, and early effect canceling method In an input transistor of current mirror circuit, it is intended to prevent the current generated by Early effects from appearing in the output current of the current mirror circuit. Having an Early voltage detector 22 of same connection and structure as a dr... | 04/01/2008 |
