Technology Search Results

This innovation presents a new enhanced V2-type constant on-time control architecture with digital implementations for solving the ripple oscillation issues when using small ESR capacitors in a converter. Instead of directly sensing the inductor current, an inductor current ramp estimator with the drift compensation is proposed as adding a ...

Light-Emitting Diodes (LEDs) have emerged as promising lighting devices for the future. LEDs are widely used in residential and commercial applications like indoor/outdoor lighting and television backlighting. Different from the traditional incandescent and fluorescent lighting sources, LEDs need constant current source to maintain the brightness and chromaticity. ...

A novel switching capacitor PWM converter is proposed. The converter is a combination of a switching capacitor converter and a PWM converter, and it has the following advantages: 1) Zero voltage switching of all the MOSFETs. 2) Self-driven to eliminate SR drivers and save drive loss. ...

This invention will impact the efficiency and reliability of computing systems. Our method and system analyzes system performance data and schedules processor frequencies to reduce power and energy consumption under user-quantifiable constraints. In this way, users can specify how much performance they are willing to sacrifice and the ...

This invention proposes a simple topology for the first stage of non-isolated two-stage applications. The output inductor is eliminated. The magnetizing current is used to achieve ZVS for all switches. By choosing leakage inductance and output capacitance carefully, the turn-off current for the primary switch is very small and ...