gate driver

  1. S

    IGBT slow turn on

    I'm using a gate driver PCB (using ucc5870) I designed to switch IGBTs in a Semikron SKM400GB12T4 module. The PCB controls 2 gate drivers, high and low side. This is the schematic for the low side switch which I'm currently testing (haven't gotten to the high side switch yet, but it's the...
  2. One Does Not Simply

    Common-mode transients across isolation: why are they important

    I understand what common mode transients are. What I don't understand is why they are important at a deeper level. This Ti app note says that: What I don't get is why any of that would happen. Also are there more other/further consequences of insufficient CMTI Here is what I understand about...
  3. dinushadil

    Four switch buck boost converter with UCC21520

    Hi guys, I designed a four switch buck boost converter with two UCC21520 gate driver ICs. When I supply the VCCI & VDDA of 5V and 12V to the gate drivers, there's a voltage output of around 2V in the output terminals. When an input voltage supply of 15V is connected, and PWM signals are provided...
  4. R

    Ground Connctions For UCC37322 Gate Driver

    I am using this gate drive for driving a PFC boost circuit mosfet. In the datasheet's pin description (shown below) it is stated that the agnd and pgnd grounds should be seperated. However in the application information (shown below) it says that the agnd and pgnd pins should be connected with...
  5. Z

    Unable to make the IR2117 work for a converter.

    I am developing a ZETA converter in the InfineonSpiceDE and to switch the MOSFET I was trying to use the IR2117. But the circuit seems to not work. Would really appreciate some help regarding this issue.
  6. A

    Negative Voltage Output from Logic Level Input

    Hey guys, I'm looking for a circuit that generates -5V from a +5V signal from a microcontroller to open and close a depletion mode n channel-mosfet. I figured this could be done with transistors/solid-state devices but I'm stuck and would appreciate some help with this I'm looking for a...
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