Abstract: A battery switch driving circuit according to an embodiment of the present invention comprises: a first battery input terminal and a second battery input terminal; a converter positioned between the first battery input terminal and the second battery input terminal; a first switch positioned between the second battery input terminal and the converter, so as to cut off a power input of the second battery input terminal when turned off; and a switch driving unit for turning on the first switch, wherein the switch driving unit comprises: a first capacitor which is charged or discharged according to on/off of a second switch operated by a PWM signal; and a second capacitor which is charged according to on/off of the second switch by a voltage charged in the first capacitor, so as to turn on the first switch.

Abstract: A semiconductor package includes a redistribution substrate having a first side and an opposite second side. A plurality of redistribution patterns are in the redistribution substrate, and a semiconductor chip is on the first side of the redistribution substrate. A plurality of metal pillars are positioned around and spaced apart from a periphery of the semiconductor chip and are connected to the redistribution patterns. A plurality of solder balls are on the second side of the redistribution substrate. Each of the metal pillars includes a third side facing the first side of the redistribution substrate, and an opposite fourth side. The fourth side has a square or octagonal shape in plan view.

Abstract: A power control apparatus of an energy storage system and method of controlling the power control apparatus are provided. The power control apparatus includes a battery manager to monitor a charge state of at least one battery module and to manage charge and discharge of the at least one battery module, a power converter to convert power of the at least one battery module from alternating current (AC) to direct current (DC) or from DC to AC, a controller configured to control the battery manager and the power converter, and a standby power supplier configured to supply constant power to the battery manager, the power converter, and the controller when the battery manager is not driven.

Abstract: A control circuit for a discontinuous conduction mode power factor correction converter using harmonic modulation includes: a first difference circuit configured to calculate and output a difference between an output voltage of a discontinuous conduction mode power factor correction converter and a reference voltage; a PI converter configured to perform a proportional integral control on an output signal of the first difference circuit, and output a signal having an arbitrary duty ratio; a second difference circuit configured to output a difference between a rectified input voltage, which is input to the discontinuous conduction mode power factor correction converter, and a harmonic modulation factor DC voltage; and a multiplication circuit configured to multiply an output of the PI controller and an output of the second difference circuit, and output a PFC control signal to a switch of the discontinuous conduction mode power factor correction converter.

Abstract: A control circuit for a discontinuous conduction mode power factor correction converter using harmonic modulation includes: a first difference circuit configured to calculate and output a difference between an output voltage of a discontinuous conduction mode power factor correction converter and a reference voltage; a PI converter configured to perform a proportional integral control on an output signal of the first difference circuit, and output a signal having an arbitrary duty ratio; a second difference circuit configured to output a difference between a rectified input voltage, which is input to the discontinuous conduction mode power factor correction converter, and a harmonic modulation factor DC voltage; and a multiplication circuit configured to multiply an output of the PI controller and an output of the second difference circuit, and output a PFC control signal to a switch of the discontinuous conduction mode power factor correction converter.

Abstract: A two-stage insulated bidirectional DC/DC power converter is disclosed. A two-stage insulated bidirectional DC/DC power converter according to an embodiment of the invention has the characteristic of including: an LLC resonant converter operating at a constant duty ratio; a bidirectional converter joined to a front part of the LLC resonant converter and configured to perform a booster converter function of outputting the input voltage at a consistent input voltage for the LLC resonant converter, and a buck converter function of reducing the voltage by way of the LLC resonant converter and then outputting a consistent voltage; and a bidirectional converter control unit configured to control changes in an input voltage of the bidirectional converter and regulate an output voltage of the LLC resonant converter to thereby maintain a consistent input voltage of the LLC resonant converter, such that the LLC resonant converter operates at a constant duty ratio.

Abstract: A battery charging apparatus includes an input power processing unit configured to receive an AC power and convert the received AC power into an output voltage for power conversion; a hybrid power converting unit configured to use a common transformer to separately convert the output voltage of the input power processing unit into a first voltage and a second voltage for charging a high voltage battery and an auxiliary battery; a high voltage charging unit configured to drop the first voltage output from the hybrid power converting unit and charge the high voltage battery with the dropped first voltage; and an auxiliary voltage charging unit configured to generate an auxiliary voltage by dropping the second voltage output from the hybrid power converting unit or a voltage of the high voltage battery, and charge the auxiliary battery with the auxiliary voltage.

Abstract: A two-stage insulated bidirectional DC/DC power converter is disclosed. A two-stage insulated bidirectional DC/DC power converter according to an embodiment of the invention has the characteristic of including: an LLC resonant converter operating at a constant duty ratio; a bidirectional converter joined to a front part of the LLC resonant converter and configured to perform a booster converter function of outputting the input voltage at a consistent input voltage for the LLC resonant converter, and a buck converter function of reducing the voltage by way of the LLC resonant converter and then outputting a consistent voltage; and a bidirectional converter control unit configured to control changes in an input voltage of the bidirectional converter and regulate an output voltage of the LLC resonant converter to thereby maintain a consistent input voltage of the LLC resonant converter, such that the LLC resonant converter operates at a constant duty ratio.