Dialog Semiconductor Inc. Patent applications |
Patent application number | Title | Published |
20150124495 | REDUCING POWER CONSUMPTION OF A SYNCHRONOUS RECTIFIER CONTROLLER - The embodiments herein describe a switched mode power converter. In particular, the embodiments herein disclose techniques for reducing power consumption of a synchronous rectifier controller of the switched mode power converter. The switched mode power converter includes a plurality of circuit components that control operation of a synchronous rectifier included in the switched mode power converter. One or more of the circuit components may be disabled to reduce power consumption. | 05-07-2015 |
20140239938 | LINE FREQUENCY DETECTOR - A line frequency detector receives an input signal representing a power source and detects a line frequency of the power source based on the input signal. The line frequency detector includes a first band pass filter having a pass band centered at an upper end of an expected frequency range of the power source and a second band pass filter having a pass band centered at a lower end of the expected frequency range. The input signal is filtered by the first and second band pass filters, generating a first characteristic signal and a second characteristic signal. The line frequency detector determines a characteristic ratio between the first characteristic signal and the second characteristic signal, and maps the characteristic ratio to the line frequency of the power source. | 08-28-2014 |
20140239840 | OUTPUT CURRENT COMPENSATION FOR JITTER IN INPUT VOLTAGE FOR DIMMABLE LED LAMPS - An LED controller reduces jitter of an LED lamp. In one embodiment, the LED controller includes a jitter detection circuit adapted to determine an amount of jitter in an input voltage signal. The input voltage signal includes a plurality of cycles and indicates an amount of dimming for the LED lamp. The LED controller further includes a jitter compensation circuit, which generates a control signal to control regulated in the LED lamp such that an output light intensity of the LED lamp substantially corresponds to the amount of dimming for the LED lamp. The control signal controls current delivery to the LED lamp to compensate for the determined amount of jitter in the input voltage signal. | 08-28-2014 |
20140210365 | HIGH PERFORMANCE ADAPTIVE SWITCHED LED DRIVER - An LED driver controls current through an LED string. The LED driver generates a boosted PWM signal to drive a PWM transistor in the LED current path such that the PWM transistor maintains a substantially constant V | 07-31-2014 |