公开(公告)号：US10256780B2

公开(公告)日：2019-04-09

申请号：US15556449

申请日：2016-03-08

Applicant: ICEpower a/s

Inventor： Kennet Skov Anderson

IPC: H03F3/38 ,  H03F3/217 ,  H03F3/181 ,  H03F1/52

Abstract: A power conversion system comprising an amplifier input for receiving an analog input signal and an amplifier output for providing a switching output signal is disclosed. The system is applicable for use in high definition switching audio amplification. The power conversion system further comprises a clipper for clipping the analog input signal having a predefined range limited by a clipping level, a pulse modulator and a switching power stage. The system further has a feedback path to the clipper including a duty cycle measuring unit and a clip level filter which generates a clip level signal and where the clipping level of the clipper is controlled by the clip level signal. Hereby it is e.g. possible to clip an analog input signal with good precision and reliability in a switching power conversion system.

公开(公告)号：US20170338777A1

公开(公告)日：2017-11-23

申请号：US15528927

申请日：2015-09-24

Applicant: ICEpower a/s

Inventor： Kennet Skov Anderson ,  Eskil Jørgensen

IPC: H03F1/30 ,  H03F3/183 ,  H03F3/217

CPC classification number: H03F1/305 ,  H03F1/34 ,  H03F3/183 ,  H03F3/217 ,  H03F2200/03

Abstract: A switching power conversion system and a method for start-up pop minimization in an audio amplifier assembly are disclosed. The switching power conversion system comprises a forward path including a compensator, a switching power stage and a demodulation filter. The system further comprises a DC-servo and a pre-charging circuit and a sequence control unit configured for providing a start-up sequence where the compensator and DC-servo are correctly biased and a bootstrap capacitor within the switching power stage is charged before the switching power stage is started. Hereby, it is e.g. possible to minimize the audible start-up pop in audio amplifier assemblies.

公开(公告)号：US20180054173A1

公开(公告)日：2018-02-22

申请号：US15556449

申请日：2016-03-08

Applicant: ICEpower a/s

Inventor： Kennet Skov Anderson

IPC: H03F3/217 ,  H03F1/52 ,  H03F3/181

CPC classification number: H03F3/2173 ,  H03F1/523 ,  H03F3/181 ,  H03F3/217 ,  H03F3/2175 ,  H03F2200/03 ,  H03F2200/66

Abstract: A power conversion system comprising an amplifier input for receiving an analogue input signal and an amplifier output for providing a switching output signal is disclosed. The system is applicable for use in high definition switching audio amplification. The power conversion system further comprises a clipper for clipping the analogue input signal having a predefined range limited by a clipping level, a pulse modulator and a switching power stage. The system further has a feedback path to the clipper including a duty cycle measuring unit and a clip level filter which generates a clip level signal and where the clipping level of the clipper is controlled by the clip level signal. Hereby it is e.g. possible to clip an analogue input signal with good precision and reliability in a switching power conversion system.