I want to drive a configuration similar to the one presented in Figure 1 of A novel tri-state boost converter with fast dynamics, but use a MOSFET instead of the diode for efficiency.

enter image description here

I want to put two in bridge, but the exact circuit is not important. Key features are that each side will have 3 switches, of which 2 are high-sides switches. Each side has 3 states, with dead time between states. Diodes are not an option for efficiency reasons.

So the question is how I can drive a PWM with 3 states with dead time, something like this:

enter image description here

Bridge driver IC only have 2 or 4 switches with two states. So probably separate high-side and low-side gate drivers will be required. But that leaves the problem of dead time. Are there any PWM IC or MCU with PWM that can handle dead time between three states?

  • \$\begingroup\$ the document that you referred to is not accessible without a login .... please provide a full circuit \$\endgroup\$ – jsotola May 10 '18 at 6:23
  • \$\begingroup\$ I added the figure from the paper, as well as a wave form of the desired PWM signal. It's not about the circuit, it's about finding chips that can drive 3 switches. \$\endgroup\$ – Pepijn May 10 '18 at 8:58

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.