Forum >Reverse voltage protection for GMR V1.1 Board
Reverse voltage protection for GMR V1.1 Board
vinaykuh 2016-01-22 11:22:35 6862 Views2 Replies Hi,
Is there any reverse voltage protection built into GMR V1.1 board?
I had an issue with the power management system and I think it reversed the polarity to board power inputs. I see that SX3478 blew off immediately. Do you think other power management ICs (LM2596s) would also be affected?
Please let me know. Thanks.
Is there any reverse voltage protection built into GMR V1.1 board?
I had an issue with the power management system and I think it reversed the polarity to board power inputs. I see that SX3478 blew off immediately. Do you think other power management ICs (LM2596s) would also be affected?
Please let me know. Thanks.
2025-01-17 11:12:35 Leff
Hi,
Welcome!
I only found these three IC about power regulator, but didn't find the SX3478 you mentioned, could you indicate me that with a picture?
CX1117-33
LM2596S-ADJ
GS2678
And according to the schematic, it seems there is no reverse voltage protection.
Leff 2016-01-30 17:46:47 Hi Leff,
Thanks for your answer. I could see those three PMICs on the schematic. And I also agree with you that there is no reverse voltage protection.
GS2678 and SX3478 are pin-to-pin compatible ICs. In the GMR board I have, they have added SX3478 instead of GS2678. Please see the attached image. vinaykuh
Thanks for your answer. I could see those three PMICs on the schematic. And I also agree with you that there is no reverse voltage protection.
GS2678 and SX3478 are pin-to-pin compatible ICs. In the GMR board I have, they have added SX3478 instead of GS2678. Please see the attached image.
vinaykuh 