公开(公告)号：US20150063434A1

公开(公告)日：2015-03-05

申请号：US14266153

申请日：2014-04-30

Applicant: Silicon Laboratories Inc.

Inventor： Jeffrey L. Sonntag ,  Douglas R. Frey ,  Michael J. Mills ,  András Vince Horvath ,  Anantha Nag Nemmani

IPC: H04L27/156

CPC classification number: H04L27/1563 ,  H04L25/0266 ,  H04L25/4902

Abstract: An analog signal is transported across an isolation channel using edge modulation/demodulation of a pulse width modulated (PWM) signal. An edge modulator is responsive to rising edges of the PWM signal to generate first pulses having a first predetermined pulse width and is responsive to receipt of falling edges of the PWM signal to generate second pulses having a second predetermined pulse width with the same polarity as the first pulses. On the opposite side of the isolation channel an edge demodulating circuit recreates the PWM signal using the first and second pulses. The rise and falling edges of the PWM signals can be distinguished based on the pulse width of the first and second pulses. A second order pulse width modulator may be used to generate the PWM signal.

Abstract translation: 使用脉冲宽度调制（PWM）信号的边缘调制/解调，模拟信号通过隔离通道传输。 边缘调制器响应于PWM信号的上升沿以产生具有第一预定脉冲宽度的第一脉冲，并且响应于接收到PWM信号的下降沿以产生具有与第二预定脉冲宽度相同极性的第二脉冲 第一脉冲。 在隔离通道的相反侧，边缘解调电路使用第一和第二脉冲重新创建PWM信号。 可以基于第一和第二脉冲的脉冲宽度区分PWM信号的上升沿和下降沿。 可以使用二阶脉冲宽度调制器来产生PWM信号。

公开(公告)号：US09143373B2

公开(公告)日：2015-09-22

申请号：US14266153

申请日：2014-04-30

Applicant: Silicon Laboratories Inc.

Inventor： Jeffrey L. Sonntag ,  Douglas R. Frey ,  Michael J. Mills ,  András Vince Horvath ,  Anantha Nag Nemmani

IPC: H04B1/38 ,  H04L5/16 ,  H04L27/156 ,  H04L25/02

CPC classification number: H04L27/1563 ,  H04L25/0266 ,  H04L25/4902

Abstract: An analog signal is transported across an isolation channel using edge modulation/demodulation of a pulse width modulated (PWM) signal. An edge modulator is responsive to rising edges of the PWM signal to generate first pulses having a first predetermined pulse width and is responsive to receipt of falling edges of the PWM signal to generate second pulses having a second predetermined pulse width with the same polarity as the first pulses. On the opposite side of the isolation channel an edge demodulating circuit recreates the PWM signal using the first and second pulses. The rise and falling edges of the PWM signals can be distinguished based on the pulse width of the first and second pulses. A second order pulse width modulator may be used to generate the PWM signal.

Abstract translation: 使用脉冲宽度调制（PWM）信号的边缘调制/解调，模拟信号通过隔离通道传输。 边缘调制器响应于PWM信号的上升沿以产生具有第一预定脉冲宽度的第一脉冲，并且响应于接收到PWM信号的下降沿以产生具有与第二预定脉冲宽度相同极性的第二脉冲 第一脉冲。 在隔离通道的相反侧，边缘解调电路使用第一和第二脉冲重新创建PWM信号。 可以基于第一和第二脉冲的脉冲宽度区分PWM信号的上升沿和下降沿。 可以使用二阶脉冲宽度调制器来产生PWM信号。