This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
I'm Louis Han.
Can you know Internal MOSFET Characteristics?
1. Absolute Maximum Ratings
2. Recommended(Continuous) Ratings
3. difference in Internal MOSFET between LMZ14201H and LMZ14202H
Can you tell me Please?
This is -7V Convertor Circuit.
1. Input Voltage
2. Output Voltage
3. Output Current
Can you Check the Circuit and the inrush Current?
sometimes Damage occurs when power is on.
For the LMZ14201H, the absolute maximum rating for Vin is 43.5V. The recommended operating condition for Vin is between 6V-42V. The module itself is set to have a maximum current limit of 2.7A. The difference between the LMZ14201H and LMZ14202H is the trimmed current limit of the module. Nothing else is different between the two modules.
Regarding the waveform, is the system loaded during screen capture? Normally when the device turns on and is loaded, the output current should have the same ramping characteristics as the output voltage.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Jimmy Hua:
Thanks for your support.
This is the screen captured at system load.
Can you give me the waveform of Normally operate?
Is device occure damage from inrush current?
How much maximum value the Output capacitor?
In reply to Louis Han15:
Does not have Device maximum output capacitor value?
Can you check the Output Current when uses negative output?
Damage occurs only when the my customer uses this product as negative output.
Can you tell me what you need to be check point when uses nagative output?
Generally when using a device in an inverting buck boost(IBB) topology, it is best to look out for the input voltage range and output current. In an IBB topology, the expected output current will be lower than in the regular buck topology. The input voltage range will be lowered since the reference is now negative Vout instead of ground.
The SLVA514B app note helps illustrate the necessary considerations when configuring a buck converter into an IBB topology. There are also wave forms that you would expect to see for startup and shutdown in this configuration. As for the inrush current spike that results from initial startup, it is still hard to determine where that is coming from.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.