Robert Bell

Robert Bell

Robert Bell

Robert (Bob) Bell is Independent engineering consultant specializing in switching power converter design. Experience in both military and commercial; dc-dc, ac-dc, LED, solar, motor drive, battery charging.

Previously, Robert Bell was the applications engineering manager for the National Semiconductor design center in Phoenix, Ariz. Products designed at the Phoenix design center include integrated switching regulators, next-generation PWM power controllers, gate drivers, and hot-swap and load-share controllers.

Bob holds a Bachelor of Science degree in Electronic Engineering from Fairleigh Dickinson University. To date he has published 25 power design articles, 11 conference papers and 5 patents.

Areas of interest of the author: Supply Power

Publications on RadioLocman by the author Robert Bell:

  1. Method sets voltage in multiple-output converters
    When you design a transformer for any power converter, you face several compromises. You must trade off core size against the number of primary turns and flux density. Another trade-off is the number of turns and winding resistance versus the associated losses. After making...
    08-03-2023
  2. Regulator IC forms convenient overvoltage detector
    Figure 1 shows a simple, stand-alone overvoltage detector. The intent of the circuit is to monitor a voltage, VMON, and set the output, VOUT, high when the monitored voltage exceeds a preset threshold. The minimum allowable threshold for this circuit is 1.25 V. The operation of...
    07-11-2018
  3. Constant-on-time buck-boost regulator converts a positive input to a negative output
    Buck regulators find wide application as step-down regulators for converting large positive input voltages into a smaller positive output voltages. Figure 1 shows a simplified buck regulator that operates in continuous-conduction mode – that is, the inductor current always...
    05-04-2017