DigitalWorld asked 1 month ago
Latch-up is like an electrical short circuit that can happen inside a chip, and it usually occurs when certain parts of the chip, called NMOS and PMOS transistors, accidentally turn on in a way they’re not supposed to. Imagine that inside the chip, there are hidden paths made up of parasitic transistors (unwanted transistors), and when these paths get activated, they create a low-resistance connection between the power supply (VDD) and ground (VSS).
2 Answers
DigitalWorld answered 1 month ago
Latch-up usually gets triggered by a sudden spike or change in voltage, which can happen if there’s noise or interference on the power supply lines. If you remove the power supply, the latch-up condition will stop, but if left unchecked, it could cause serious damage to the circuit.
semiconductor answered 1 month ago
Latch-up forms a feedback loop where these parasitic transistors keep turning each other on, causing a large current to flow uncontrollably between the power and ground. This situation is called "latch-up," and it’s bad because it can overheat the chip or even destroy it if not fixed quickly.
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