Abstract: The disclosure provides an electronic device and a manufacturing method thereof. The electronic device includes a package structure, a circuit structure, a bonding structure and an external element. The circuit structure is disposed on the package structure and is electrically connected to the package structure. The circuit structure has a recess. The bonding structure includes a first bonding pad and a second bonding pad. The second bonding pad is disposed in the recess, and the second bonding pad is disposed on the first bonding pad. The bonding structure is disposed between the circuit structure and the external element. The external element is electrically connected to the circuit structure through the bonding structure. A width of the first bonding pad is smaller than a width of the second bonding pad.

Abstract: A switch control circuit includes a processor computing an on-time ratio based on an input voltage value, a first output voltage value, and a second output voltage value. The processor further computes an on-time sum based, on an output current value, an inductance value, the input voltage value, the first output voltage value and the second output voltage value, and further computes an operation frequency value that corresponds to the on-time sum. The processor further computes on-time values of a boost mode and a buck-boost mode based on the on-time sum and the on-time ratio. The processor controls a signal generator based on the operation frequency value, the on-time value of the boost mode and the on-time value of the buck-boost mode.

Abstract: An LED drive device includes: a drive module generating, based on a control signal, a drive current that flows through an LED-based load, and generating, based on the drive current, a sampling current associated with the drive current; a voltage detection module detecting a voltage across the LED-based load, and generating an adjustment signal based on the detection result and on a predetermined reference voltage; and a control signal generation module generating the control signal based on the adjustment signal, the sampling current and the predetermined reference voltage.

Abstract: A switch control circuit includes a processor computing an on-time ratio based on an input voltage value, a first output voltage value, and a second output voltage value. The processor further computes an on-time sum based, on an output current value, an inductance value, the input voltage value, the first-output voltage value and the second output voltage value, and further computes an operation frequency value that corresponds to the on-time sum. The processor further computes on-time values of a boost mode and a buck-boost mode based on the on-time sum and the on-time ratio. The processor controls a signal generator based on the operation frequency value, the on-time value of the boost mode and the on-time value of the buck-boost mode.