Categories

App note: Reducing system noise and voltage overshoot in buck topology switch mode regulators

Posted on Saturday, October 6th, 2012 in app notes by DP

Here is an article describing how to reduce noise and voltage overshoot in buck topology DC/DC converters. Slowing down the turn on time of the high side switch in conjunction with replacing a diode with a low side switch should increase efficiency and lower the power dissipation.

Adding snubers (RC circuit) in parallel to the low side switch should help decrease overshoot, and lower noise. As always, the best thing to lower the noise is to carefully layout the PCB. High currents and switching operation can add loads of noise if the leads carrying that current are long, so keep them as short as possible.

This entry was posted on Saturday, October 6th, 2012 at 9:00 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

  • KH: IMHO PCA9685 is not a really good part for this application. It's a PWM LED driver for goodness' sake. NXP _does_not_ mention servos in the...
  • KH: So it's a servo library designed by a software guy, or a library targeted at embedded newbies, or a learner bike. Given the design of...
  • Max: A thing I wish I knew getting into Arduino-controlled servos is that the typical "180 degrees" servos DO NOT move 180 degrees for the standard...
  • Max: I have certainly noticed certain suppliers (like Adafruit, Pololu) being... "western-facing" - which is another way to say their prices definitely aren't Eastern Europe compatible,...
  • Shawn: Hello