Part Number: LM5060
Tool/software: TINA-TI or Spice Models
Does the LM5060 model properly handle the OVP function?
In the attached simulation, which is the eval simulation file slightly modified, there is an OVP event. After the OVP event the output (OUT) goes to -10V, along with the gate (GATE). That doesn't seem right.
It's dependent on the load. In the attached simulation I have a 100 ohm load. A 1K load goes even further negative, and 10 ohm load goes only slightly negative.
I don't have an eval board, so I'm wondering if the model is accurately showing how the part functions.snvma08-overvoltage.tsc
In reply to hwswdesign:
We will look into this ans get back to you.
Nikhil Gupta | Power Modeling Manager | WEBENCH Design Center
All TI Spice Models can be found here | All WEBENCH supported devices can be found here
In reply to Nikhil Gupta (1):
The internal diode from OUT to GND is missing in the model, so when the OVP fault occurs, 80uA current sinks from the OUT pin and therefore VOUT goes negative. We will fix the model shortly, but for now you can connect the attached diode model external to the OUT pin to GND for your simulations.
Model issue has been fixed on the web. You can use the updated model from the below link.
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