Abstract: Related to is a bidirectional CLLC circuit with a coupled inductor, which is associated with a circuit topology and operation control of a bidirectional CLLC resonant converter. Provided is a structure of a bidirectional CLLC resonant circuit with a coupled inductor, including a primary side bridge, a secondary side bridge, a primary side resonant capacitor, a secondary side resonant capacitor, a coupled resonant inductor, and a transformer. Compared with a structure of a conventional bidirectional CLLC resonant circuit, two separate resonant inductors located at a primary side and a secondary side in an original resonant cavity are replaced with one coupled resonant inductor in the circuit; the coupled resonant inductor has opposite dotted terminals with the transformer, and a primary side and a secondary side of the coupled resonant inductor are respectively in serial connection with a primary side and a secondary side of the transformer.

Abstract: A package structure of an embedded power module includes a top insulation layer, a top metal pattern layer, a solder layer, a device layer, a bottom metal pattern layer and a bottom insulation layer sequentially arranged from top to bottom. The device layer includes at least two MOSFET bare dies and several metal connection blocks, and is filled with insulation filler to isolate the MOSFET bare dies and the metal connection blocks from each other. The drain electrodes of the bare dies are connected with the top metal pattern layer through the solder layer, and the source electrodes and the gate electrodes of the bare dies are electrically connected to the bottom metal pattern layer, respectively. The upper and lower surfaces of the metal connection blocks are electrically connected to the top metal pattern layer and the bottom metal pattern layer, respectively.

Abstract: Related to is a bidirectional capacitance - inductance - inductance - capacitance (CLLC) circuit with a coupled inductor, which is associated with a circuit topology and operation control of a bidirectional CLLC resonant converter. A bidirectional CLLC resonant circuit with a coupled inductor includes a primary side bridge, a secondary side bridge, a primary side resonant capacitor, a secondary side resonant capacitor, a coupled resonant inductor, and a transformer. Compared with a structure of a conventional bidirectional CLLC resonant circuit, two separate resonant inductors located at a primary side and a secondary side in an original resonant cavity are replaced with one coupled resonant inductor in the circuit; the coupled resonant inductor has opposite dotted terminals with the transformer, and a primary side and a secondary side of the coupled resonant inductor are respectively in serial connection with a primary side and a secondary side of the transformer.

Abstract: Provided is a method for controlling smooth switching of an operation direction of a bidirectional resonant CLLC circuit, which applies to the bidirectional resonant CLLC circuit. The method includes the following steps: Step 1: detecting a current circuit state and controlling the bidirectional resonant CLLC circuit to operate in a forward operation state by means of a primary bridge and a secondary bridge, by a controller; Step 2: performing Step 3 when an externally transmitted reference signal received by the controller or an internal preset reference signal in the controller is an operation direction switching signal; Step 3: performing frequency conversion control, by the controller; Step 4: performing preparation of phase shift control and generating a driving signal of the secondary bridge, by the controller; Step 5: performing the phase shift control, by the controller; and Step 6: switching a circuit operation state to an inverse operation mode.