公开(公告)号：US20240404929A1

公开(公告)日：2024-12-05

申请号：US18325708

申请日：2023-05-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kapil Sahasrabudhe ,  Kyoung Min Lee ,  Philomena Brady

IPC: H01L23/495 ,  H01L23/00

Abstract: An electronic device includes a leadframe having a die pad and leads. A die having an active side is attached to the die pad. The die further includes a dielectric layer deposited on a side of the die opposite that of the active side and an die attach film deposited on the dielectric layer. Wire bonds are attached from the active side of the die to the leads. A critical signal wire bond is attached from the active side of the die to the die pad. A mold compound encapsulates the die, the wire bonds, the critical signal wire bond, and a portion of the leadframe. A stacked formation of the die, the dielectric layer, and the die attach film form a capacitor that filters noise from a critical signal carried by the critical signal wire bond.

公开(公告)号：US11575314B2

公开(公告)日：2023-02-07

申请号：US17334651

申请日：2021-05-28

Applicant: Texas Instruments Incorporated

Inventor： Saad Pervaiz ,  Sombuddha Chakraborty ,  Philomena Brady ,  Laszlo Balogh

IPC: H02M1/42 ,  H02M3/335 ,  H02M1/08 ,  H02M1/00

Abstract: A controller for a boost power factor correction (PFC) converter. The controller is configured to operate the boost PFC converter in multiple operating modes, including a continuous conduction mode (CCM), a transition mode (TM), and a hybrid mode in which the controller operates the converter in both CCM and TM within a same line cycle. An example controller includes a current control loop and a mode transition circuit. The current control loop is configured to compute an inductor current for each of first and second operation modes, based on a current sample taken, for example, during a boost synchronous rectifier conduction period of the converter. The mode transition circuit includes digital logic circuitry and is configured to generate a pulse indicating that one, two or all three of: zero-voltage switching (ZVS) has been achieved; the synchronous rectifier conduction period is active; and/or one of TM or hybrid mode is active.

公开(公告)号：US20220393574A1

公开(公告)日：2022-12-08

申请号：US17334651

申请日：2021-05-28

Applicant: Texas Instruments Incorporated

Inventor： Saad Pervaiz ,  Sombuddha Chakraborty ,  Philomena Brady ,  Laszlo Balogh

IPC: H02M1/42 ,  H02M1/00 ,  H02M1/08 ,  H02M3/335

Abstract: A controller for a boost power factor correction (PFC) converter. The controller is configured to operate the boost PFC converter in multiple operating modes, including a continuous conduction mode (CCM), a transition mode (TM), and a hybrid mode in which the controller operates the converter in both CCM and TM within a same line cycle. An example controller includes a current control loop and a mode transition circuit. The current control loop is configured to compute an inductor current for each of first and second operation modes, based on a current sample taken, for example, during a boost synchronous rectifier conduction period of the converter. The mode transition circuit includes digital logic circuitry and is configured to generate a pulse indicating that one, two or all three of: zero-voltage switching (ZVS) has been achieved; the synchronous rectifier conduction period is active; and/or one of TM or hybrid mode is active.