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Q&A

Posts tagged overvoltage

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71%
+3 −0
Q&A 1-wire interface overvoltage protection

I'm designing a robust 1-wire output for an IoT board. The interface should be able to withstand high voltage. Mainly the same voltage level as the board power supply. That's 12V to 36V DC. The p...

1 answer  ·  posted 1mo ago by DeadMouse‭  ·  last activity 1mo ago by Olin Lathrop‭

75%
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Q&A Power switches and automotive load dump, unclamped

Power switches used in automotive are usually rated to withstand clamped load dump events, of the 35 - 40 V peak variety. AFAICT there are two main clamping mechanisms - first one for the logic par...

2 answers  ·  posted 8mo ago by kellogs‭  ·  last activity 8mo ago by TonyStewart‭

66%
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Q&A Variant of a Mosfet's Gate-Source protection

Let's say a 100V voltage spike arrives at +12V and the TVS diode clamps it to 25V. Q2 may or may not be activated. Will this circuit ensure a V_gs lower than 25V for the mosfet Q1 ? Any catch to it...

1 answer  ·  posted 11mo ago by kellogs‭  ·  last activity 10mo ago by Olin Lathrop‭

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Q&A Over-voltage protection for device with photovoltaic cell source

I have a solar panel rated for 6V open-circuit and up to 150mA. I would like to connect this to an SPV1040 or similar buck-boost converter with MPPT functionality to be able to charge a 3.6V batter...

2 answers  ·  posted 11mo ago by Keelan‭  ·  last activity 11mo ago by TonyStewart‭

71%
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Q&A Isolated Digital Input - Overvoltage protection

I am trying to build an active-low digital isolated switch capable of withstanding 32VDC voltage without creating any damage to the system. This is the snapshot of the circuit not fulfilling the r...

3 answers  ·  posted 3y ago by 2kind‭  ·  last activity 3y ago by Olin Lathrop‭