In general just boost capacitor with dedicated ICs like IR2110 will work, however it is not suitable for full duty cycle required application.
Apparently with transformer will cost more when isolation is not mandatory.
My idea:
1. build a step-up converter to make a voltage of VIN+12V and switch it between MOSFET's Gate by several PNP and NPN transistors
2. place a resistor between Source and Gate to keep MOSFET normally closed.
3. place a bidirectional Zener diode between Souce and Gate to ensure Vgs < Vgs max.
4. when opened, current flow through the resistor and Zener diode GS to make Vgs ≈ 10V
5. when closed, no current supply to Gate, Vgs = 0
I'm wondering using Boost or Ćuk converter circuit to generate a higher voltage as bridge high side MOSFET driving source, but I haven't seen any combination of them.
Is there any problem or better suggestion?
Please help me, thank you very much!
Apparently with transformer will cost more when isolation is not mandatory.
My idea:
1. build a step-up converter to make a voltage of VIN+12V and switch it between MOSFET's Gate by several PNP and NPN transistors
2. place a resistor between Source and Gate to keep MOSFET normally closed.
3. place a bidirectional Zener diode between Souce and Gate to ensure Vgs < Vgs max.
4. when opened, current flow through the resistor and Zener diode GS to make Vgs ≈ 10V
5. when closed, no current supply to Gate, Vgs = 0
I'm wondering using Boost or Ćuk converter circuit to generate a higher voltage as bridge high side MOSFET driving source, but I haven't seen any combination of them.
Is there any problem or better suggestion?
Please help me, thank you very much!