Reply to thread

Message

<blockquote data-quote="John Roberts" data-source="post: 40353" data-attributes="member: 126">Re: High quality power amps with onboard DSP and load monitoring.Yup, you can pretty much trace the trajectory of class D power amps power points to device technology (voltage-current product) over the years. [TMI] My concern about paralleling switched devices is they will never switch on at exactly the same instant. So in principle with 3 or 4 switched devices in parallel, the first to switch on could momentarily see 3x or 4x the final shared current it will have to support. Sizing the devices to handle this peak current would pretty much defeat the benefit of paralleling. It is helpful to be driving a somewhat inductive load, so that the rise time of the load current gives the other devices time to catch up and get all turned on before the load current reaches maximum. But like i said, I haven&#039;t seen this done, so it probably isn&#039;t completely this simple to manage.&nbsp; [/TMI]&nbsp;JR</blockquote>

[QUOTE="John Roberts, post: 40353, member: 126"] Re: High quality power amps with onboard DSP and load monitoring. Yup, you can pretty much trace the trajectory of class D power amps power points to device technology (voltage-current product) over the years. [TMI] My concern about paralleling switched devices is they will never switch on at exactly the same instant. So in principle with 3 or 4 switched devices in parallel, the first to switch on could momentarily see 3x or 4x the final shared current it will have to support. Sizing the devices to handle this peak current would pretty much defeat the benefit of paralleling. It is helpful to be driving a somewhat inductive load, so that the rise time of the load current gives the other devices time to catch up and get all turned on before the load current reaches maximum. But like i said, I haven't seen this done, so it probably isn't completely this simple to manage. [/TMI] JR [/QUOTE]

Verification