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Hangzhou, China

Zhao C.,Silergy Corporation | Chen M.,Zhejiang University | Zhang G.,Zhejiang University | Wu X.,Zhejiang University | Qian Z.,Zhejiang University
IEEE Transactions on Power Electronics | Year: 2010

The dc-dc topologies with capacitive output filter are going to be widely used especially for high-output current applications because of its inherent advantages in the lower voltage stress on rectifiers and the smaller occupied printed circuit board layout area at the secondary side. However, the parasitic resonance between the equivalent leakage inductance of the power transformer and the equivalent output junction capacitance of the rectifier still practically exists in the center-tapped rectification configuration, which leads to considerable voltage ringing on the rectifier and then results in the utilization of the rectifier with much higher breakdown voltage rate and the decrease of conversion efficiency. Moreover, the relatively larger output-current ripple induces the both larger conduction loss in the secondary-side windings of the power transformer and the capacitive output filter. In this paper, a novel symmetrical rectifier configuration is proposed, which can effectively clamp the practical voltage stress on the rectifier without any parasitical voltage spike and reduce the output-current ripple due to the bypass effect of the auxiliary flying-balancing capacitors. The leakage inductance and the output filter capacitor can be treated as an inherent small LC filter to reduce the output voltage ripple further. Based on the theoretical analysis and the optimal design considerations, a 300-W lab-made LLC resonant dc-dc converter with this proposed configuration is built up to verify its advantages in high conversion efficiency. © 2011 IEEE. Source


Trademark
Silergy Corporation | Date: 2009-02-12

Chip carriers, namely, semiconductor chip housings; Design libraries, namely, downloadable electronic data files for use in integrated circuit and semiconductor design; Electronic imaging platforms in the field of inspection of semiconductor materials, namely, semiconductor wafers and reticles; Optical inspection apparatus for inspection of semiconductor materials, namely, semiconductor wafers, reticles, and photomasks; Optical semiconductor amplifiers; Semiconductor chips; Semiconductor devices; Semiconductor power elements; Semiconductors; Very large scale integration (VLSI) semiconductor integrated circuits.


Trademark
Silergy Corporation | Date: 2010-05-25

Battery power supplies for medical ventilators; Chip carriers, namely, semiconductor chip housings; Consumer electronic products, namely, audio amplifiers, audio speakers, audio receivers, electrical audio and speaker cables and connectors, home theater systems, audio decoders, video decoders, speakers, power conversion devices, power converters, and power inverters; DC/AC power converters; Electronic controller to manage the power, movement and functions of an elevator; Electronic controllers for use with power converters; Electronic power supplies for driving electric motors; High-frequency switching power supplies; Low pass inductor filter used in high power electrical applications; Power amplifiers; Power controllers; Power supplies; Power supply connectors and adaptors for use with portable electronic devices; Power switches; Power transformers for amplification; Renewable battery system to provide backup power; Semiconductor chips; Semiconductor devices; Semiconductor power elements; Telecommunications equipment and software, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches including Ethernet switches and routers, fiber-to-the-home and ethernet-over-VDSL access aggregators, terminators and repeaters, and remote presence management products, namely, switches, and console, alarm, sensor and power management devices; Very large scale integration (VLSI) semiconductor integrated circuits; Voltage regulators for electric power; Voltage stabilizing power supply.


Trademark
Silergy Corporation | Date: 2010-05-04

Battery power supplies for medical ventilators; Chip carriers, namely, semiconductor chip housings; Consumer electronic products, namely, audio amplifiers, audio speakers, audio receivers, electrical audio and speaker cables and connectors, home theater systems, audio decoders, video decoders, speakers, power conversion devices, power converters, and power inverters; DC/AC power converters; Electronic controllers for use with power converters; Electronic controllers used to reduce power consumption; Electronic power supplies for driving electric motors; High-frequency switching power supplies; Low pass inductor filter used in high power electrical applications; Power amplifiers; Power controllers; Power supplies; Power supply connectors and adaptors for use with portable electronic devices; Power switches; Power transformers for amplification; Renewable battery system to provide backup power; Semiconductor chips; Semiconductor devices; Semiconductor power elements; Semiconductors; Telecommunications equipment and software, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches including Ethernet switches and routers, fiber-to-the-home and ethernet-over-VDSL access aggregators, terminators and repeaters, and remote presence management products, namely, switches, and console, alarm, sensor and power management devices; Very large scale integration (VLSI) semiconductor integrated circuits; Voltage regulators for electric power; Voltage stabilizing power supply.


Trademark
SILERGY Corporation | Date: 2016-06-03

Audio amplifiers; Audio circuit boards; Battery charge devices; Battery chargers; Battery monitors; Battery power supplies for medical ventilators; Chargers for batteries; LED and HID light controls; Light systems comprising light sensors and switches; Power controllers; Power supplies; Pressure sensors; Semiconductor chip sets; Semiconductor chips; Semiconductor devices; Semiconductor lead frames; Semiconductor power elements; Semiconductor wafers; Surge protectors; Battery chargers; Battery power supplies for medical ventilators; Cell phone battery chargers; Chargers for batteries; Consumer electronic products, namely, audio amplifiers, audio speakers, audio receivers, electrical audio and speaker cables and connectors, audio decoders, video decoders, speakers, power conversion devices, power converters, and power inverters; DC/AC power converters; Electric meters; Electric power converters; Electrical surge arresters; Electronic controllers for use with power converters; Electronic power supplies for driving electric motors; Electronic controllers for use with power converters; High-frequency switching power supplies; Inverters for power supply; Lighting controls; Monitoring devices for monitoring battery performance characteristics; Power controllers; Rechargeable electric batteries; Transient voltage surge suppressors with power conditioning technology; Uninterruptible electrical power supplies; Very large scale integration (VLSI) semiconductor integrated circuits; Voltage regulators; Voltage regulators for electric power; Voltage surge protectors; Voltage stabilizing power supply.

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