公开(公告)号：US10050539B2

公开(公告)日：2018-08-14

申请号：US15390617

申请日：2016-12-26

Applicant: NXP B.V.

Inventor： Joan Wichard Strijker

IPC: H02M3/33 ,  H02M3/335

CPC classification number: H02M3/33515 ,  H02M3/33592 ,  Y02B70/1475

Abstract: Switched mode power supply (SMPS) with a control circuitry and method of operating such a SMPS are described. The control circuitry includes a first driver to drive an input switch in response to a driving signal, a pulse circuit to generate a pulse signal in response to the driving signal, a timer circuit to generate a delayed signal in response to the pulse signal and a second driver to drive to the output switch in response to the delayed signal.

公开(公告)号：US09743468B2

公开(公告)日：2017-08-22

申请号：US14707481

申请日：2015-05-08

Applicant: NXP B.V.

Inventor： Joan Wichard Strijker ,  Leendert van den Broeke

IPC: H05B33/08 ,  H01L29/06 ,  H01L27/02 ,  H01L29/74 ,  H01L29/732 ,  H01L29/861 ,  H01L49/02 ,  H02M7/217 ,  H01L29/87

CPC classification number: H05B33/0815 ,  H01L27/0255 ,  H01L27/0259 ,  H01L27/0262 ,  H01L27/0288 ,  H01L28/20 ,  H01L29/0638 ,  H01L29/0684 ,  H01L29/732 ,  H01L29/74 ,  H01L29/861 ,  H01L29/87 ,  H02M7/217

Abstract: The disclosure relates to a controller (606) for a switched mode power supply, SMPS (600), comprising: a switch toggling unit (670) having a first switching mode and a second switching mode, wherein the first switching mode is a continuous conduction mode or a boundary conduction mode and the second conduction mode is a discontinuous conduction mode; and a switch mode selector (676) configured to set the switching mode of the switch toggling unit (670) in accordance with a current in an inductor (602) of the SMPS (600).

公开(公告)号：US11558047B2

公开(公告)日：2023-01-17

申请号：US16841533

申请日：2020-04-06

Applicant: NXP B.V.

Inventor： Joan Wichard Strijker

IPC: H02M1/08 ,  H03K17/0812 ,  H02M1/32 ,  H02M3/158 ,  H02M3/335 ,  H03K17/16

Abstract: Embodiments of an SMPS controller and a method for operating a switched-mode power supply (SMPS) controller are described. In an embodiment, an SMPS controller includes a gate driver circuit configured to generate a drive signal for a switch of an SMPS and a current sense electrical terminal configured to receive sensed current corresponding to the switch and to conduct driver discharge current from the gate driver circuit.

公开(公告)号：US10998827B2

公开(公告)日：2021-05-04

申请号：US16151332

申请日：2018-10-03

Applicant: NXP B.V.

Inventor： Joan Wichard Strijker

IPC: H02M3/335 ,  H02M1/34 ,  H02M1/00

Abstract: This specification discloses devices and methods that provide for an improved switched mode power supply (SMPS) with a supply voltage connected p-type active clamp. In some embodiments, such an improved SMPS can have a p-type active clamp connected on one side to a positive voltage (which can preferably be the supply voltage), and on the other side to a clamp capacitor. Such an improved SMPS would then have the benefit of not requiring additional components (such as a level shifter, a high side supply voltage, a negative supply voltage, etc.) and the costs associated with these additional components.

公开(公告)号：US20180183342A1

公开(公告)日：2018-06-28

申请号：US15390617

申请日：2016-12-26

Applicant: NXP B.V.

Inventor： Joan Wichard Strijker

IPC: H02M3/335

CPC classification number: H02M3/33515 ,  H02M3/33592

Abstract: Switched mode power supply (SMPS) with a control circuitry and method of operating such a SMPS are described. The control circuitry includes a first driver to drive an input switch in response to a driving signal, a pulse circuit to generate a pulse signal in response to the driving signal, a timer circuit to generate a delayed signal in response to the pulse signal and a second driver to drive to the output switch in response to the delayed signal.

公开(公告)号：US11588407B2

公开(公告)日：2023-02-21

申请号：US17021143

申请日：2020-09-15

Applicant: NXP B.V.

Inventor： Joan Wichard Strijker ,  Peter Theodorus Johannes Degen

IPC: H02M3/335 ,  H02M1/42

Abstract: One example discloses a switched mode power supply device, comprising: an energy storage device; a controller configured to discharge the energy storage device; a voltage drop device having a first pin coupled to the energy storage device, a second pin coupled to the controller, and a third pin coupled to receive a first power-down signal; wherein the first power-down signal indicates that the energy storage device is to be discharged; wherein the voltage drop device is configured to input a first voltage from the energy storage device on the first pin and output a second voltage to the controller on the second pin; and wherein the second voltage is lower than the first voltage.

公开(公告)号：US20220085724A1

公开(公告)日：2022-03-17

申请号：US17021143

申请日：2020-09-15

Applicant: NXP B.V.

Inventor： Joan Wichard Strijker ,  Peter Theodorus Johannes Degen

IPC: H02M3/335 ,  H02M1/42

Abstract: One example discloses a switched mode power supply device, comprising: an energy storage device; a controller configured to discharge the energy storage device; a voltage drop device having a first pin coupled to the energy storage device, a second pin coupled to the controller, and a third pin coupled to receive a first power-down signal; wherein the first power-down signal indicates that the energy storage device is to be discharged; wherein the voltage drop device is configured to input a first voltage from the energy storage device on the first pin and output a second voltage to the controller on the second pin; and wherein the second voltage is lower than the first voltage.

公开(公告)号：US10411603B1

公开(公告)日：2019-09-10

申请号：US16207018

申请日：2018-11-30

Applicant: NXP B.V.

Inventor： Joan Wichard Strijker

IPC: H02M3/335

Abstract: A switch mode power supply can include a bipolar device (e.g., bipolar junction transistor) connected in series with a capacitor and operable as a bipolar clamp switch where the bipolar device can be turned on by forward biasing a collector-base junction. The capacitor connected in association with the bipolar device can keep the bipolar clamp switch conductive for a limited time based on energy obtained from a transformer primary winding and stored in the capacitor when the base-collector junction bias is reversed. Storage charge properties of the bipolar clamp switch can be used to keep it conductive and working as an active clamp without requiring a high driver circuit.

公开(公告)号：US20180183346A1

公开(公告)日：2018-06-28

申请号：US15390622

申请日：2016-12-26

Applicant: NXP B.V.

Inventor： Joan Wichard Strijker

IPC: H02M3/335 ,  H02M1/32

CPC classification number: H02M3/33592 ,  H02M1/32 ,  H02M1/34 ,  H02M3/33569 ,  H02M2001/342

Abstract: Switched mode power supply (SMPS) with at least one active clamp circuit and method of operating such a SMPS are described. The active claim circuit utilizes a clamp switch, a Zener diode and a clamp capacitor that are connected in series between one side of a particular winding of a transformer and the other side of the particular winding of the transformer.

公开(公告)号：US09893638B1

公开(公告)日：2018-02-13

申请号：US15478151

申请日：2017-04-03

Applicant: NXP B.V.

Inventor： Joan Wichard Strijker

IPC: H02M3/335 ,  H02M1/08

CPC classification number: H02M3/33592 ,  H02M1/083 ,  H02M2001/0025 ,  H02M2001/0048

Abstract: Switched mode power supply (SMPS) with adaptive reference voltage for controlling an output transistor and method of operating the SMPS are described. The adaptive reference voltage is implemented using a timer that starts when the voltage on a conduction terminal of the output transistor reaches a reference voltage and stops when the current through the output transistor reaches zero. The voltage difference between a target voltage and a voltage accumulated when the timer was active is then sampled to produce a sampled voltage, which defines a new reference voltage if the accumulated voltage is not equal to the target voltage so that the reference voltage is adaptively adjusted in accordance with an operational characteristic of the output transistor.