公开(公告)号：US09601992B2

公开(公告)日：2017-03-21

申请号：US14531726

申请日：2014-11-03

Applicant: Infineon Technologies AG

Inventor： Kok Kee Lim ,  Yong Siang Teo ,  Siew Teng Winson Wong

IPC: H02M1/44 ,  H02M3/335 ,  H02M7/48

CPC classification number: H02M1/44 ,  H02M3/33507 ,  H02M3/33515 ,  H02M2007/4815 ,  Y02B70/1433

Abstract: This disclosure relates to a switching power supply with regulated voltage suppression to reduce transformer audio noise. The switching power supply is operable to be fed a zero crossing voltage and to generate an output voltage. The output voltage may have a voltage level set using a modulated gate signal. A circuit is provided to reduce audio noise in a switching power supply by setting a ringing suppression time of the modulated gate signal to a first time period when the zero crossing voltage is below a predetermined voltage threshold and to a second time when the zero crossing voltage is above the predetermined threshold voltage.

公开(公告)号：US09557756B2

公开(公告)日：2017-01-31

申请号：US14618216

申请日：2015-02-10

Applicant: Infineon Technologies AG

Inventor： Cheow Guan Lim ,  Yong Siang Teo

IPC: G05F1/46 ,  G01R19/10 ,  H03M1/34 ,  H03M1/10

CPC classification number: G05F1/468 ,  G01R19/10 ,  H03M1/1023 ,  H03M1/34

Abstract: Representative implementations of devices and techniques provide detection of a voltage drift of an electrical component or system. A detection circuit detects the voltage drift based on a comparison of a received signal from a test circuit and a reference voltage. A compensation voltage may be generated and applied at one or more locations within the test circuit to compensate for the voltage drift.

Abstract translation: 设备和技术的代表性实现提供对电气部件或系统的电压漂移的检测。 检测电路基于来自测试电路的接收信号与参考电压的比较来检测电压漂移。 可以产生补偿电压并施加在测试电路内的一个或多个位置以补偿电压漂移。