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：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：US20240224477A1

公开(公告)日：2024-07-04

申请号：US18090734

申请日：2022-12-29

Applicant: Monolithic Power Systems, Inc.

Inventor： Daocheng Huang ,  Xu Han ,  Zhe Yang

IPC: H05K7/20 ,  H05K1/14 ,  H05K1/18 ,  H05K7/02

CPC classification number: H05K7/209 ,  H05K1/144 ,  H05K1/145 ,  H05K1/181 ,  H05K7/023 ,  H05K2201/042

Abstract: A power module includes a first power module and a second power module arranged below the first power module. The first power module includes at least one input pad configured to receive an input voltage and at least one power pad configured to provide an intermediate voltage. The at least one input pad is mounted on a top surface of the first power module, and the at least one power pad is mounted on a bottom surface of the first power module. The second power module includes at least one signal pad configured to receive the intermediate voltage and at least one output pad configured to provide an output voltage. The at least one signal pad is mounted on a top surface of the second power module, and the at least one output pad is mounted on a bottom surface of the second power module.