公开(公告)号：US11205961B2

公开(公告)日：2021-12-21

申请号：US16384041

申请日：2019-04-15

Applicant: Texas Instruments Incorporated

Inventor： Keliu Shu

IPC: H02M1/08 ,  H02M3/157 ,  G01N33/00 ,  G08B17/11

Abstract: An electronic device has a DC/DC boost converter that includes a power NFET. The power NFET is coupled between a first pin, which can be coupled to a battery through an inductor, and a second pin that can be coupled to a ground plane. A switch-node is coupled to a third pin, which can be coupled to a diode to provide a boosted output voltage. A gate driver can receive a FET-on signal and drive a gate of the power NFET. A digital logic circuit provides the FET-on signal and includes an Ipeak gear-shifting circuit that dynamically changes the value of a peak inductor current responsive to one or more determinations that are related to one of the boosted output voltage and a switching frequency of the DC/DC boost converter.

公开(公告)号：US20200271700A1

公开(公告)日：2020-08-27

申请号：US16729339

申请日：2019-12-28

Applicant: Texas Instruments Incorporated

Inventor： Keliu Shu

IPC: G01R19/00 ,  H02J9/06 ,  H02J1/10 ,  H02M3/335

Abstract: A voltage detector comprises an input, a resistor divider circuit having resistors coupled in series with one another between the input and a reference node, and N intermediate nodes joining adjacent pairs of the resistors. The voltage detector has N switches coupled to the respective intermediate nodes, as well as a comparator with an input coupled to the switches, a state machine having an input coupled to the output of the comparator, and a decoder having N decoder outputs coupled to respective control terminals of the N switches.