Patent application number | Description | Published |
20100164451 | Voltage Regulator and Method for Voltage Regulation - A voltage regulator, comprising: an input terminal; an output terminal at which an output voltage is provided; an output transistor which couples the input terminal of the voltage regulator to the output terminal of the voltage regulator; and a transimpedance amplifier including an input terminal which is coupled to the output terminal of the voltage regulator and an output terminal which is coupled to a control terminal of the output transistor, optionally via a coupling, the coupling having an impedance value between the output terminal of the transimpedance amplifier and the control terminal of the output transistor which at a given frequency is smaller than or equal to an impedance value of an output impedance of the transimpedance amplifier. The transimpedance amplifier comprises an amplifier including an input terminal which is coupled to the input terminal of the transimpedance amplifier, and an output terminal which is coupled to the output terminal of the transimpedance amplifier, and wherein the transimpedance amplifier further comprises a first impedance which couples the output terminal of the transimpedance amplifier to the input terminal of the transimpedance amplifier and which comprises a first resistor with a first terminal which is connected to a first terminal of the first impedance, a second resistor with a first terminal which is connected to a second terminal of the first resistor and a second terminal which is connected to the second terminal of the first impedance, and a first capacitor which couples the second terminal of the first resistor to the input terminal of the voltage regulator. | 07-01-2010 |
20120169422 | Amplifier with Non-Linear Current Mirror - An amplifier with a non-linear current mirror comprises an amplification stage having an input terminal for an input signal as well as an output stage coupled to the amplification stage by a current mirror stage. The current mirror stage comprises at least one mirror transistor coupled to the amplification stage and at least one output transistor coupled to the output stage. The amplifier comprises two variable resistive elements, each of them connected in series to one of the mirror transistor and the output transistor. A tuning stage is adapted to tune the variable resistive elements in response to the input signal. | 07-05-2012 |
20120280726 | CONTROL CIRCUIT ARRANGEMENT FOR PULSE-WIDTH MODULATED DC/DC CONVERTERS AND METHOD FOR CONTROLLING A PULSE-WIDTH MODULATED CONVERTER - A control circuit arrangement for pulse-width modulated DC/DC converters includes a phase generator for a complementary driver which provides respective gate signals to a first and second driver transistor in response to a control signal. A clock control circuit receives a clock signal and a pulse-width modulated signal and provides the control signal in response to a signal edge of the pulse-width modulated signal and the clock signal applied thereto. A mode selection input terminal receives a mode selection signal to select a first mode or a second mode of operation. The phase generator provides in the first mode each of the gate signals the control signal and the respective other gate signal. In the second mode of operation, it provides each gate signal in response to the control signal. | 11-08-2012 |
20140285166 | LOW-DROPOUT REGULATOR AND METHOD FOR REGULATING VOLTAGE - In one embodiment a low-dropout regulator comprises a first differential amplifier (Nmos | 09-25-2014 |