Post by account_disabled on Nov 4, 2017 2:27:20 GMT -5
Hi,
We have 2 x LM2576-ADJ production 5.0V and 4.0V respectively. The average Load Current does not goes beyond 500mA.
5.0V supply goes to SoC and 4.0V supply goes to GPRS (2G) modem. GPRS modem requires a peak current of 2A and we have placed a 100uF tantalum capacitor close to Modem.
Now we are getting issues because occasionally we see that either SoC or Modem gets short circuited. We are assuming this is happening because of some spike at Power-up but we have no clue what is the reason. We suspected counterfeit product and ordered fresh material from Mouser, but still facing same issues. Another point of concern may be if the design is under-rated. But should that create voltage spikes high enough to damage the load devices?
Please help....
I didn't find the right solution from the Internet.
References
e2e.ti.com/support/power_management/non-isolated_dcdc/f/196/t/636914
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We have 2 x LM2576-ADJ production 5.0V and 4.0V respectively. The average Load Current does not goes beyond 500mA.
5.0V supply goes to SoC and 4.0V supply goes to GPRS (2G) modem. GPRS modem requires a peak current of 2A and we have placed a 100uF tantalum capacitor close to Modem.
Now we are getting issues because occasionally we see that either SoC or Modem gets short circuited. We are assuming this is happening because of some spike at Power-up but we have no clue what is the reason. We suspected counterfeit product and ordered fresh material from Mouser, but still facing same issues. Another point of concern may be if the design is under-rated. But should that create voltage spikes high enough to damage the load devices?
Please help....
I didn't find the right solution from the Internet.
References
e2e.ti.com/support/power_management/non-isolated_dcdc/f/196/t/636914
creative advertisement