PWM fans

PWM (Pulse-width modulation) regulates the voltage signal between fully on and fully off, controlling the speed of a fan. The PWM function is commonly used in OEM cases. Delta also provides standard PWM through distribution channels. Delta's internal PWM signal control fans deliver a variety of advantages over external PWM controlled devices:

  • Wide PWM Frequency Range Input (30Hz- 30kHz)
  • Lower vibration at lower duty cycle
  • Prevent spike current on fan speed control
  • Better motor efficiency
  • Lower fan switching noise

Download PWM Technology Overview and Part Number List

Contact us for additional information on Delta’s PWM Technology.

Contact local distributors for standard PWM fan offerings.