Dialog Semiconductor Gmbh

Dialog Semiconductor (uk) Limited

Kun Yang

Wenduo Liu

Laiqing Ping

Horst Knoedgen

Nebojsa Jelaca

Christoph Nagl

Jung Woo Choi

A flyback converter communication channel is provided that comprises a pair of capacitors. A transmitter on a first side of a transformer for the flyback converter transmits a transmitter signal over a first one of the capacitors. The transmitter also transmits a complement of the transmitter signal over a second one of the capacitors. A receiver on a second side of the transformer controls a switch transistor responsive to a high-pass-filtered difference of the received signals from the pair of capacitors.

Flyback converter with edge-based isolated communication

A DALI interface is provided that includes a digital isolator having an input terminal and an output terminal. A DALI bus controlled by a master device controls a binary voltage state of a voltage rail. A DFET couples between the input terminal and the output terminal to control a voltage of the input terminal responsive to the control of the DALI bus by the master device. The digital isolator responds to the control of the input terminal voltage to drive a digital signal through an isolation barrier to control a voltage of the output terminal to control a slave lighting device.

Slave interface for a DALI network

An isolated switching power converter communication channel is provided that comprises a pair of capacitors. A transmitter on a first side of a transformer for the converter transmits a transmitter signal over a first one of the capacitors. The transmitter also transmits a complement of the transmitter signal over a second one of the capacitors. A receiver on a second side of the transformer recovers a signal responsive to a high-pass-filtered difference of the received signals from the pair of capacitors.

Flyback converter with reliable pulse-based isolated communication

A circuit for driving a power switch is presented. The circuit includes a first power switch coupled to a second power switch via a switching node and a driver coupled to the first power switch, where the driver contains an energy storing element coupled to the switching node. The circuit also contains a sensor to sense an electrical parameter of the driver and a charger coupled to the sensor. The charger provides a charge current to charge the energy storage element, and to control the charge current based on the electrical parameter. In particular, a circuit for driving a power switch based on a III/V semiconductor is presented. In addition, a method of powering a power switch driver is presented. The method includes sensing an electrical parameter of the driver and adjusting a current to charge the energy storing element based on the electrical parameter.

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Campbell, CA, United States of America

Kun Yang