公开(公告)号：US20240145334A1

公开(公告)日：2024-05-02

申请号：US18408958

申请日：2024-01-10

Applicant: Monolithic Power Systems, Inc.

Inventor： Fengchun He ,  Daocheng Huang ,  Junjie Feng ,  Xu Han

IPC: H01L23/367 ,  H05K7/20

CPC classification number: H01L23/3675 ,  H05K7/209 ,  H01L25/16

Abstract: A power module has a substrate, a magnetic component disposed on the substrate, a plurality of power integrated circuits (ICs), and a heat spreader. The heat spreader and at least a part of the plurality of power ICs are disposed on a top surface of the substrate. The heat spreader is fixed on the substrate through a structural adhesive, covering top surfaces of the part of the plurality of power ICs on the top surface of the substrate, and is in contact with the top surfaces of the part of the plurality of power ICs on the top surface of the substrate through a thermal conductive adhesive. A difference between a height measured from a topmost surface of the magnetic component to the top surface of the substrate and a height measured from a topmost surface of the heat spreader to the top surface of the substrate is within 300 um.

公开(公告)号：US11705817B2

公开(公告)日：2023-07-18

申请号：US17492271

申请日：2021-10-01

Applicant: Monolithic Power Systems, Inc.

Inventor： Dianbo Fu ,  Daocheng Huang ,  Junjie Feng

IPC: H02M3/335

CPC classification number: H02M3/33573 ,  H02M3/33576

Abstract: An LLC resonant converter including a transformer, a switching full-bridge circuit, a resonant circuit, and a bridge rectifier. The switching full-bridge circuit has a first pair of switches and a second pair of switches, with the first pair of switches being connected between a DC input voltage and a second end of a secondary winding of the transformer, the second pair of switches being connected between a DC input voltage and a first end of the secondary winding of the transformer.

公开(公告)号：US12088195B2

公开(公告)日：2024-09-10

申请号：US18502971

申请日：2023-11-06

Applicant: Monolithic Power Systems, Inc.

Inventor： Junjie Feng ,  Xu Han ,  Fengchun He ,  Daocheng Huang ,  Yuhang Sun

IPC: H02M3/00 ,  H02M1/12 ,  H02M3/335

CPC classification number: H02M3/01 ,  H02M1/12 ,  H02M3/33573 ,  H02M3/33576 ,  H02M3/33592

Abstract: A resonant converter has a primary resonant tank circuit and a secondary resonant tank circuit. An inverter circuit converts an input DC voltage received by the resonant converter at an input voltage node to a pulsating signal that is fed to the primary resonant tank circuit to generate a resonant tank current that flows through a primary winding of a transformer. The resonant tank current induces current in a secondary winding of the transformer. The induced current is rectified by a rectifier and the rectified signal is filtered to generate an output DC voltage at an output voltage node. The secondary resonant tank circuit is disposed between the secondary winding of the transformer and the output voltage node, and a tank node of the secondary resonant tank is connected to the primary resonant tank circuit through the inverter circuit.

公开(公告)号：US11855530B1

公开(公告)日：2023-12-26

申请号：US17881937

申请日：2022-08-05

Applicant: Monolithic Power Systems, Inc.

Inventor： Junjie Feng ,  Xu Han ,  Fengchun He ,  Daocheng Huang ,  Yuhang Sun

IPC: H02M3/00 ,  H02M3/335 ,  H02M1/12

CPC classification number: H02M3/01 ,  H02M1/12 ,  H02M3/33573 ,  H02M3/33576 ,  H02M3/33592

Abstract: A resonant converter has a primary resonant tank circuit and a secondary resonant tank circuit. An inverter circuit converts an input DC voltage received by the resonant converter at an input voltage node to a pulsating signal that is fed to the primary resonant tank circuit to generate a resonant tank current that flows through a primary winding of a transformer. The resonant tank current induces current in a secondary winding of the transformer. The induced current is rectified by a rectifier and the rectified signal is filtered by an output capacitor to generate an output DC voltage at an output voltage node. The secondary resonant tank circuit is disposed between the input voltage node and the output voltage node to inject odd order harmonics of the operating frequency to the primary tank circuit to shape the resonant tank current.

公开(公告)号：US11799383B2

公开(公告)日：2023-10-24

申请号：US17671814

申请日：2022-02-15

Applicant: MONOLITHIC POWER SYSTEMS, INC.

Inventor： Dianbo Fu ,  Jinghai Zhou ,  Daocheng Huang ,  Junjie Feng

IPC: H02M3/335 ,  H02M1/00 ,  H02M3/00

CPC classification number: H02M3/33573 ,  H02M1/0095 ,  H02M3/33584 ,  H02M3/01

Abstract: A hybrid DC-DC converter includes a converter circuit, a bridge circuit with a bridge path that includes a winding of a transformer, and another bridge circuit with a bridge path that includes another winding of the transformer. Current through the bridge path of the other bridge circuit flows through the converter circuit in one direction and bypasses the converter circuit in the other direction. The converter circuit can operate in buck, boost, or buck-boost mode.