Hot carrier degradation in LDMOS power transistors

The hot carrier performance of N-LDMOS and P-LDMOS transistors is evaluated. For N-LDMOS transistors, the drain current degradation is shown to be due to hot electron injection in the drift region field oxide (bird's beak edge). On the other hand, the hot carrier-damaged region of P-LDMOS transistors is within the channel region, and hot electron is also the source of degradation.