Categories

App note: Understanding noise that comes with inductor based DC-DC converters

Posted on Saturday, January 19th, 2013 in app notes by DP

onapp

Here’s a tutorial from On Semiconductor describing noise that comes with inductor based DC-DC convertors. The article highlight the key areas where noise is generated in such systems, and provides suggestions on how to tackle them.

The main purpose of this document is to clarify the source of such a noise, and assess the risk of system’s EMI pollution. The NCP5007 device, together with a PWM based structure, will be used as vehicles to perform the associated engineering test in a real application, but the same may apply to other Boost converters, such as the NCP5005

This entry was posted on Saturday, January 19th, 2013 at 1:00 pm and is filed under app notes. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • Pekka Akselin: This is ridiculous!? :-) We are back at 256(!) byte EPROMs that needed multiple, a handful, of voltages to run! :-(
  • KH: Let's try a back-of-envelope calc balancing energies. From MCP1700 datasheet, there are graphs for a 200mA load step. Estimate the energy shortfall as 12uJ. Say...
  • Daniel: It's been a week and my comment is still awaiting moderation. Apparently the CIA doesn't want their involvement known?
  • KH: Agree, so okay, I guess he must have learned from somewhere. 100nF and 1000uF is so far apart, that was jarring; it's more magic incantation...
  • Max: I have a suspicion the hefty electrolytic cap might be some sort of cargo cult carry-over from other RF-based projects - for instance, I've seen...