-
公开(公告)号：US09614478B2
公开(公告)日：2017-04-04
申请号：US15210131
申请日：2016-07-14
Applicant: Stryker Combo L.L.C.
Inventor： Regis J. Nero, Jr. , Jeffrey A. Gibala
CPC classification number: H03F1/0227 , H02M2001/0045 , H03C1/02 , H03F1/02 , H03F3/19 , H03F3/217 , H03F3/2176 , H03F3/245 , H03F2200/324 , H03F2200/451
Abstract: Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.
-
公开(公告)号：US20160322941A1
公开(公告)日：2016-11-03
申请号：US15210131
申请日：2016-07-14
Applicant: Stryker Combo L.L.C.
Inventor： Regis J. Nero, JR. , Jeffrey A. Gibala
CPC classification number: H03F1/0227 , H02M2001/0045 , H03C1/02 , H03F1/02 , H03F3/19 , H03F3/217 , H03F3/2176 , H03F3/245 , H03F2200/324 , H03F2200/451
Abstract: Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.
-
Search Results
2
records
(took 0.02 seconds)
