Hello, I have been downloaded the SPICE models of TPS43330 from http://www.ti.com/product/tps43330-q1, when I start a simulation the chip works as it should. The problem is when I try to connect one of the BUCK convertors to the out of the boost convertor. I am using OrCad 16.5 for the simulation. The result of the simulation of the connected boost and buck is the falling of the voltage at the out of the boost. I tried to measure the input current of the BUCK convertor and I was surprised when I measure more then 150A current through 0.001Ohm shunt resistor (12V ideal voltage source at the input of the buck ). Is there a problem in the SPICE model or I have some mistake? I have used exactly the same schematics from the link above ( copy / paste schematic and SPICE models in the simulation of the boost convertor ) Thank you in advance!
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