Abstract: In the specification and drawing a package structure is described and shown with a first die including a high side driver and at least a first bonding pad, a second die including a low side driver, a high withstand voltage device, a controller coupled with the low side driver and the high withstand voltage device and at least a second bonding pad, and at least one conducting wire, in which the high side driver is coupled through the first bonding pad, the conducting wire, the second bonding pad and the high withstand voltage device to the controller.

Abstract: A resonant power supply for light-emitting devices comprises an inverter including two DC input terminals and two AC output terminals, a resonant circuit connected in series to at least one of the two AC output terminals, and an LED circuit connected in series to the resonant circuit. The inverter is configured to convert a direct current from the two DC input terminals into an alternating current through the two AC output terminals, and the LED circuit emits lights as the alternating current is applied.

Abstract: A series solar system with current-matching function includes a plurality of solar modules. The plurality of the solar modules is electrically connected in series. Each solar module includes a DC/DC converter and a solar panel electrically connected in parallel. The photocurrent generated by the solar panel is matched with the current generated by the solar panel operating at the optimum operating point by means of adjusting the duty cycle of the DC/DC converter, so that the solar panel can generate maximum output power. Therefore, in the series solar system, even a solar module is covered, causing the received light intensity of the solar module is reduced, and the series solar system still can generate maximum output power.

Abstract: In the specification and drawing a package structure is described and shown with a first die including a high side driver, a second die including a low side driver and at least one conducting wire, wherein the conducting wire is coupled with the first die and the second die.

Abstract: The zero-voltage-switching electric converter comprises a power source configured to provide DC current and having a first terminal and a second terminal, a switching circuit having a third terminal electrically connected to the first terminal of the power source and a fourth terminal, and a resonant load having a fifth terminal electrically connected to the second terminal of the power source and a sixth terminal connected to the fourth terminal of the switching circuit. The power source, the switching circuit and the resonant load are connected to form a loop, and the net energy fed into the switching circuit is zero.

Abstract: The present invention discloses a zero voltage switch (ZVS) method for the synchronous rectifiers and inverter. The ZVS method for synchronous rectifier, in which the rectifier diode is replaced by a bi-directional-current one directional-voltage blocking capability switch, by allowing and terminating current flow in a reverse direction, zero voltage turn-on is achieved on both inverter and rectifier switches.

Abstract: The zero voltage switch (ZVS) method for the synchronous rectifiers and inverter. The ZVS method for synchronous rectifier, in which the rectifier diode is replaced by a bi-directional-current one directional-voltage blocking capability switch, by allowing and terminating current flow in a reverse direction, achieves zero voltage turn-on on both inverter and rectifier switches. The ZVS method of the present invention includes: increasing an inductor current to a current upper limit with a first switch module active; decreasing the inductor current with the first switch module open and a second switch module passive; decreasing the inductor current with a second switch module active; turning the second switch module open when the inductor current turns negative; increasing the inductor current from a current lower limit with the first switch module passive; and increasing the inductor current with the first switch module active with zero voltage.

Abstract: The present zero-voltage-switching electric converter has a power source, an inverter electrically connected to the power source and a resonant load electrically connected to the power source and the inverter. The resonant load includes a first capacitor, a first inductor connected in series to the first capacitor and a load coupled to the first capacitor. The resonant load can further include a second inductor connected in parallel to the first capacitor and a third inductor connected in series to the load. In addition, the resonant load can further include a transformer including a primary winding connected in parallel to the first capacitor, and a secondary winding connected in parallel to the load. The inverter can be a synchronized boost inverter, a half bridge boost inverter, or a full bridge boost inverter.