公开(公告)号：US09166484B2

公开(公告)日：2015-10-20

申请号：US14179431

申请日：2014-02-12

Applicant: NXP B.V.

Inventor： Cornelis Jozef Petrus Maria Rooijackers

IPC: H05B37/00 ,  H02M3/335 ,  H05B33/08 ,  H02M3/337 ,  H02M1/00

CPC classification number: H02M3/33507 ,  H02M3/33523 ,  H02M3/337 ,  H02M2001/0003 ,  H02M2001/0009 ,  H05B33/0815 ,  Y02B20/346 ,  Y02B70/1433

Abstract: Consistent with an example embodiment, a resonant converter comprises a signalling transformer that is used to transfer information between the secondary winding and primary winding of the converter whilst maintaining mains isolation between the two sides. In the embodiment, according to the disclosure, the use of a signalling transformer (in addition to a switching, or resonant, transformer) eliminates the need for an opto-coupler to transfer information and so allows for the construction of a simpler, more reliable and/or cheaper resonant converter. Other embodiments described herein may be suitable for use in dimmable LED driver applications, for example.

Abstract translation: 与示例实施例一致，谐振转换器包括用于在转换器的次级绕组和初级绕组之间传送信息的信号变压器，同时保持两侧之间的电源隔离。 在本实施例中，根据本公开，信令变压器（除了开关或谐振变压器之外）的使用消除了光耦合器传输信息的需要，因此允许构建更简单，更可靠的 和/或更便宜的谐振转换器。 例如，本文所述的其它实施例可适用于可调光LED驱动器应用。

公开(公告)号：US20180019612A1

公开(公告)日：2018-01-18

申请号：US15644897

申请日：2017-07-10

Applicant: NXP B.V.

Inventor： Cornelis Jozef Petrus Maria Rooijackers ,  Peter Theodorus Johannes Degen

IPC: H02J7/04 ,  H02J7/00 ,  H02J7/02

CPC classification number: H02J7/045 ,  H02J7/0036 ,  H02J7/0047 ,  H02J7/0052 ,  H02J7/022 ,  H02J2007/0062

Abstract: An apparatus configured to, in respect of an electronic device comprising a battery for powering the electronic device and a charger configured to receive a mains power supply and, when connected to the electronic device, provide a power output to charge the battery, based on a determination of a failure of a request to increase the power output of the charger to the battery of the electronic device, the failure comprising where at least a requested increase of the power output of the charger by a first predetermined amount fails to yield an increase in the power output of the charger equal to the first predetermined amount within a threshold amount, provide an indication to the electronic device that the charger is disconnected from the mains power supply for causing the electronic device to indicate that the charger is disconnected from the mains power supply to a user of the electronic device.