Patent
Synchronous rectifier post regulator
TLDR
In this article, the authors proposed a post regulation mechanism for synchronous rectifiers in DC-to-DC converters, where the rectifier may function as a modulator for post regulation over a limited range of output voltages suitable for load regulation.Abstract:
Methods and apparatus for regulating a synchronous rectifier DC-to-DC converter by adjusting one or more existing synchronous rectifiers in the converter are provided. By regulating an existing synchronous rectifier, the rectifier may function as a modulator for post regulation over a limited range of output voltages suitable for load regulation, without introducing an additional conversion stage for post regulation, which typically decreases efficiency and power density. Independent post regulation of an existing synchronous rectifier may improve the load regulation, reduce output voltage ripple, and improve the transient response of the converter. By operating independently from the main control loop, post regulation may most likely avoid the limitations of the main control loop, such as limited gain bandwidth and a relatively slow transient response. Such post regulation may be added to isolated or non-isolated switched-mode power supplies, such as forward or buck converters.read more
Citations
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References
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Patent
DC-to-DC converters
TL;DR: In this article, a DC-to-DC converter is described that provides resonant-transition switching by ensuring that the voltage across a first switch falls to zero between cycles, and the converter can be used to switch between two switches simultaneously.
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Point of load sine amplitude converters and methods
TL;DR: In this paper, a Sine Amplitude Converter (SAC) is proposed to convert a DC input voltage to a DC output voltage using a fixed transformation ratio at a frequency locked to a resonance.
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Circuit and method for achieving zero ripple current in the output of a converter
TL;DR: In this article, a power converter includes a transformer for receiving bipolar electrical input power from a power source, the power substantially free of dead time and a hybridge rectifier coupled to the transformer and including first and second output inductors of independently selectable, differing inductance.
Patent
Converter output regulation via channel resistance modulation of synchronous rectifiers
TL;DR: In this article, the output voltage regulation system allows independent output regulation of multi-output dc-dc switched-mode power converters, where the channel resistance of MOSFET synchronous output rectifiers are controlled to obtain the voltage drop required to keep the respective output between predetermined limits concurrent with wide excursions in output load.
Patent
Extremely high-speed switchmode DC-DC converters
TL;DR: In this article, a switchmode DC-DC power converter using one or more non-Silicon-based switching transistors and a Silicon-based controller is described, and the low figure of merit (FoM) of the TFET of the non-silicon based transistors allows the converters of the present invention to be employed in envelope tracking amplifier circuits of wireless devices designed for highbandwidth technologies such as, for example, EDGE and UMTS, thereby improving the efficiency and battery saving capabilities of the wireless devices.