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Consumer Electronics

Start-up Company Semitrex Expands Patent Portfolio

14 September 2016

To protect its core energy efficiency power supply technologies, including the highly efficient switched capacitor-based Muxcapacitor technique and quasi-resonant transformer-based power converter technology, fabless start-up company Semitrex has been expanding its patent portfolio on a global scale. In the last three years, the fledgling company has been granted 22 patents with the latest being awarded in Singapore, Australia and Taiwan.

The 20th patent issued in Singapore is in priority with the U.S. patent number 9,407,154, which describes a power converter circuit for delivering power to electronic devices. The electrical circuit includes a power converter circuit that is coupled to a source for receiving AC input power and delivering DC output power to an electronic device. The power converter includes a transformer and a switching device coupled to the primary side of the transformer for delivering power from the source to the primary side. Likewise, the patent description indicates that a controller is coupled to a voltage sensor and the switching device for receiving the sensed voltage from the sensor and transmitting a control signal to the switching device to adjust the voltage level being delivered to the electronic device.

Similarly, the Taiwan application claims priority to U.S. patent number 9,431,914, and the Australian application claims priority to PCT/US13/55402, said Semitrex.

According to Semitrex, the last three awarded patents are still waiting to get published. All Semitrex’s patents are filed under their subsidiary holding company Advanced Charging Technologies, LLC based in Tulsa, OK.

Power converter circuit for delivering low DC voltage to electronic devices with > 90% efficiency across all loads. (Image Credit: Semitrex). Power converter circuit for delivering low DC voltage to electronic devices with > 90% efficiency across all loads. (Image Credit: Semitrex).

Targeting AC/DC and DC/DC converters used for powering Internet of Things-connected devices, Semitrex’s core power supply technology is implemented in an ASIC chip called Tronium, which uses a 0.18 µm BCD process. Combining a Tronium chip with a buck converter, two inductors and fews passives in a single semiconductor package, Semitrex engineers have created a multichip module-designated power supply system on a chip, or a PSSoC. Employing this architecture, the start-up company has readied a variety of AC/DC PSSoC modules with DC outputs from 1.8 V to 5.0 V and up to 2.5 W power. The measured efficiency of PSSoC modules is > 90% across all loads with standby power < 0.5 mW at 120 VAC. Currently the products are being optimized for introduction in 2017.

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