公开(公告)号：US11581309B2

公开(公告)日：2023-02-14

申请号：US17675066

申请日：2022-02-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Michael Szelong ,  James Robert Todd ,  Tobias Bernhard Fritz ,  Ralf Peter Brederlow

IPC: H01L27/08 ,  G01L1/18 ,  H01L49/02

Abstract: An integrated circuit comprises a semiconductor substrate having a surface. A lateral resistor is arranged in a first plane parallel to the surface of the substrate. A vertical reference resistor comprises a layer arranged in a second plane parallel to the surface of the substrate and deeper than the first plane. This layer is doped to promote current flow in the second plane. The vertical reference resistor further comprises a first trench and a second trench coupled between the layer and the surface of the substrate. The first and second trenches are arranged in a vertical direction orthogonal to the first and the second planes and are doped to impede current flow in the vertical direction. A cross-section of the first and second trenches is two-fold rotationally symmetric around the vertical direction, and the lateral resistor and the first and second trenches have the same temperature coefficient.

公开(公告)号：US10126792B2

公开(公告)日：2018-11-13

申请号：US14956319

申请日：2015-12-01

Applicant: Texas Instruments Incorporated

Inventor： Francesco Silvio Santoro ,  Ralf Peter Brederlow ,  Neil Gibson ,  Rüdiger Kuhn

IPC: G06F1/26 ,  H02M3/158

Abstract: A power conversion system includes a maximum load current controller that is operable to limit a load current. For example, in a power conversion system operating in a discontinuous conduction mode (DCM), the maximum load current controller limits the load current by determining an idle period in an active cycle for power switches of the maximum load current controller. The maximum load current controller is optionally operable to approximate values for the time idle period that are substantially equal to theoretically calculated values.