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| Number | Title | Issue Date |
| 8159199 | On-chip voltage supply scheme with automatic transition into low-power mode of MSP430 An integrated electronic device includes circuitry for providing a system supply voltage from a primary power supply. The circuitry has a high power (HP) stage coupled to the primary power supply and having an output node coupled to a supply system node for providin... | 04/17/2012 |
| 8154263 | Constant GM circuits and methods for regulating voltage In one embodiment the present invention includes a voltage regulator circuit comprising a voltage to current converter. The voltage to current converter is coupled to provide a current to maintain an output voltage under changing load conditions. A transconductance ... | 04/10/2012 |
| 8129962 | Low dropout voltage regulator with clamping Apparatus and methods for reducing output load transients of a low dropout voltage regulator (“LDO”) are disclosed herein. A voltage regulator includes an output driver coupled to a regulator output pin, the output driver provides current to a load external to t... | 03/06/2012 |
| 8098057 | Constant voltage circuit including supply unit having plural current sources A constant voltage circuit configured to convert an input voltage into an output voltage having a predetermined level is disclosed. The constant voltage circuit includes a differential amplifier circuit configured to produce an output signal having a voltage level i... | 01/17/2012 |
| 8085013 | DC power converter and mode-switching method A DC converter and a mode-switching method used in an electronic apparatus are included. The electronic apparatus includes a subsystem circuit. The DC power converter comprises a first voltage converting circuit electrically connected to the subsystem circuit, recei... | 12/27/2011 |
| 8085014 | Dual power switch with activation control and voltage regulator using same The present invention discloses a dual power switch and a voltage regulator using the dual power switch. The dual power switch comprises a PMOS power switch and an NMOS power switch connected in parallel and operating according to corresponding predetermined conditi... | 12/27/2011 |
| 8018213 | Measuring the current through a load transistor The measurement of a current through a load transistor is described. ... | 09/13/2011 |
| 7952333 | Circuit and method for determining current in a load A circuit (1) is described for determining the current (Iload) in a load (6), the circuit having a main transistor (2) and a sense transistor (3), each transistor having a main current path (4, 5) and a control terminal ... | 05/31/2011 |
| 7906946 | Semiconductor integrated circuit device for providing series regulator A semiconductor integrated circuit device for controlling an external output transistor is provided. The semiconductor integrated circuit device comprises: a first power supply circuit including an output circuit and providing a first series regulator in cooperation... | 03/15/2011 |
| 7852052 | Supply circuit for implantable medical devices A supply circuit for an implantable medical device (IMD) is presented. The supply circuit includes a battery, a high current circuit, a current-modifying component, a low current circuit, and a capacitor. The low current circuit is connected to a first terminal of t... | 12/14/2010 |
| 7847529 | Dual loop linear voltage regulator with high frequency noise reduction A linear voltage regulator is provided. The linear voltage regulator includes a first circuit configured to receive the first voltage from a voltage source and to remove frequency components of the first voltage in a first frequency range to obtain an output voltage... | 12/07/2010 |
| 7821240 | Voltage regulator with pass transistors carrying different ratios of the total load current and method of operation therefor A voltage regulator for providing a voltage regulated output to a load comprises a first loop and a second loop. The first loop comprises a first active device coupled to a first pass device and configured to provide a first, relatively high current output to the lo... | 10/26/2010 |
| 7808221 | Current regulation module The present invention discloses a current regulation module for providing a predetermined current. The current regulation module comprises a linear power conversion circuit, a switching power conversion circuit, a current detector, and a controller. The current dete... | 10/05/2010 |
| 7804284 | PSRR regulator with output powered reference The invention relates to a regulator with a reference generator circuit (e.g., a band-gap reference) and a reference generator power selector. The reference generator power selector selectively powers the reference generator circuit from an input power signal during... | 09/28/2010 |
| 7795848 | 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 voltag... | 09/14/2010 |
| 7786713 | Series regulator circuit with high current mode activating parallel charging path A series regulator circuit for reducing current consumption, enabling switching between different current consumption modes, and suppressing output voltage fluctuations. A constant current source 20, connected to an input voltage line, is connected to a groun... | 08/31/2010 |
| 7728565 | Non-invasive load current sensing in low dropout (LDO) regulators A low dropout (LDO) voltage regulator includes an output terminal for providing a regulated voltage output to a load, and a plurality of PFETs connected in parallel. Each PFET drains a level of current and the sum of the levels of current are provided as a current o... | 06/01/2010 |
| 7675273 | Wideband low dropout voltage regulator A method and apparatus for regulating a supply voltage to an integrated circuit is disclosed. The method and apparatus provides good power supply noise rejection characteristics over a wide bandwidth as well as low dropout voltage. In the disclosed methods and appar... | 03/09/2010 |
| 7642759 | Paralleling voltage regulators Circuits and methods for paralleling voltage regulators are provided. Improved current sharing and regulation characteristics are obtained by coupling control terminals of the voltage regulators together which results in precise output voltages and proportional curr... | 01/05/2010 |
| 7619396 | Thermal dissipation improved power supply arrangement and control method thereof Time-sharing technique is used for power conversion to improve the thermal dissipation thereof. In a power supply arrangement to provide a supply voltage to a load, a plurality of linear regulators are so switched that each time only one of them is enabled to conver... | 11/17/2009 |
| 7498778 | ORing circuit A method and a circuit comprising an electrically controlled transistor element (303) configured for conveying a current from an input terminal (300) to an output terminal (320), wherein the current is of a magnitude belonging within a pre-deter... | 03/03/2009 |
| 7408790 | Power supply system and apparatus The present invention relates to a switched mode power supply with programmable digital control and to a power supply system comprising a plurality of switched mode power supplies. The input terminals and the output terminals of the switched mode power supply system... | 08/05/2008 |
| 7405545 | Voltage-regulator and power supply having current sharing circuit The present invention proposes a voltage-regulator and a power supply having a current-sharing circuit. The voltage-regulator capable of current sharing uses an enabling terminal as a current-sharing control interface. A pass transistor supplies an output voltage an... | 07/29/2008 |
| 7400121 | Soft-start system for voltage regulator and method of implementing soft-start A system and method to provide a slow start up voltage, such as that can slowly ramp up or down by cyclically coupling a pair of associated energy storage devices, such as capacitors, during a start-up phase. The cyclic coupling of the capacitors, in conjunction wit... | 07/15/2008 |
| 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 |
| 7362079 | Voltage regulator circuit A voltage regulator circuit has a standby amplifier with an output coupled to a gate of an output transistor. An active amplifier has an output coupled to the gate of the output transistor and to a gate of a replica follower transistor. A voltage regulated output is... | 04/22/2008 |
| 7358627 | Electronic control systems and methods An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collec... | 04/15/2008 |
| 7342764 | Electronic control systems and methods An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collec... | 03/11/2008 |
| 7336058 | Multistage low dropout voltage regulation A low dropout (LDO) voltage regulator having more than one LDO modules, each LDO module having a frequency response adapted to a certain range of output frequency. The LDO voltage regulator can provide a gain over a broad range of operating frequency by combining ou... | 02/26/2008 |
| 7327125 | Power supply circuit having voltage control loop and current control loop A power supply circuit includes two pass transistors that conduct current from a voltage supply terminal to an output terminal. One of the pass transistors is smaller whereas the other is larger. Current through the smaller transistor is controlled by the voltage co... | 02/05/2008 |
| 7310048 | Method and apparatus for sensing a current in a circuit Techniques are disclosed to sense a current in a circuit. For instance, current sense circuit according to the teachings of the present invention includes a current sense resistor coupled to an input of the current sense circuit. The current sense resistor is couple... | 12/18/2007 |
| 7301313 | Multiple voltage regulators for use with a single load Multiple voltage regulators for use with a single load. The present invention allows power to be supplied to an electrical load using multiple voltage regulators based on the operating environment of the load. In one embodiment, a primary voltage regulator that is b... | 11/27/2007 |
| 7301316 | Stable DC current source with common-source output stage A current source is provided for use with integrated circuits such as programmable logic device integrated circuits. The current source has an operational amplifier with positive and negative inputs and an output. The output is connected to a common-source output st... | 11/27/2007 |
| 7292015 | High efficiency, high slew rate switching regulator/amplifier A regulating apparatus having an output node and being operative for regulating the voltage level at the output node in response to a reference signal provided as an input to the regulating apparatus. The regulating apparatus includes a linear amplifier stage operat... | 11/06/2007 |
| 7282895 | Active dropout optimization for current mode LDOs A DC/DC converter has a linear voltage regulator for reducing or eliminating the output ripple of the converter with a minimum loss of efficiency. The converter comprises a converter stage with a supply voltage input, a converted voltage output and a control input, ... | 10/16/2007 |
| 7279881 | Integrated circuit for regulating a voltage generator An integrated circuit includes a voltage generator with a first controllable resistor and a second controllable resistor, through which a first input terminal that applies a first voltage potential and a second input terminal that applies a second voltage potential ... | 10/09/2007 |
| 7276887 | Power supply circuit A power supply circuit includes first and second power supply circuits. The first power supply circuit has a first voltage generation circuit and the second power supply circuit has a second voltage generation circuit and an operational amplifier. When a load is in ... | 10/02/2007 |
| 7276885 | Apparatus and method for power sequencing for a power management unit A PMU that includes LDOs is provided. The PMU also includes, for each LDO, a corresponding reference circuit that provides a reference voltage for the LDO. Further, the PMU includes a central bias circuit that provides a reference current to each of the voltage refe... | 10/02/2007 |
| 7274176 | Regulator circuit having a low quiescent current and leakage current protection A voltage regulator includes first and second transistors arranged in parallel and configured to regulate current flow to an output node, and a sensing circuit configured to sense a voltage level at the output node and provide a signal proportional thereto. the regu... | 09/25/2007 |
| 7274114 | Integrated tracking voltage regulation and control for PMUIC to prevent latch-up or excessive leakage current A tracking and control method and circuit for use in a power management unit integrated circuit (PMUIC) that enables multiple voltage regulator outputs to maintain a same voltage or a ratiometric relation to a reference voltage source. When the reference voltage sou... | 09/25/2007 |
