公开(公告)号：US09632523B2

公开(公告)日：2017-04-25

申请号：US14510467

申请日：2014-10-09

Applicant: MARVELL WORLD TRADE LTD

Inventor： Ruiqiang Liu ,  Hongzheng Han ,  Tuo Wu

IPC: G05F5/00 ,  G01R19/00 ,  H02M3/156

CPC classification number: G05F5/00 ,  G01R19/00 ,  G01R19/04 ,  H02M3/156

Abstract: Aspects of the disclosure provide a circuit for peak voltage detection. The circuit includes a diode-based peak detector and a compensation circuit. The diode-based peak detector has a first diode, and is configured to receive a signal for peak voltage detection and generate a first voltage of a stable level indicative of a peak voltage of the signal based on the first diode. The compensation circuit has a second diode. The compensation circuit is configured to receive the first voltage and generate a second voltage of a stable level that is independent of the first diode.