Nowadays, we're trying to replicate a 24V 40A H-bridge as shown in the link:
Component Value/Part# MOSFETS STP80NF55-08 (80A 55V) Half Bridge Driver IR2109 DC to DC converter VBSD1-S24-S12-SIP (24V to 12V) Regulator 78L05 (5V) Inverters SN74HC14N Optoisolator 4N270545K C_B 0.1 uF R_G 4.7 Ω R_PD 2.2 kΩ
Before we start, we comprehend the basic principles of the H bridge. In this design, we have trouble in providing 5V into 4N27 optocoupler and 12V into IR2109 Gate Driver. The voltage converter VBSD1-s24-s12 sparks and burns each trial and we measure 24V voltage applied to IR2109. While this procedure, the motor could not move at all.
- Near to VBSD1 converter, we use polar capacitors instead of
nonpolar ones as the datasheet of it. This is true or not?
- What can we measure to control this circuit?
- What can be the reasons behind the converter burn?
Note: The ground terminal is the left hand side of the copper traces