A power MOSFET is connected in a common-source configuration as shown in Figure P8.1. The parameters are: \(I_{D, \max }=4 \mathrm{~A}, V_{D S, \max }=50 \mathrm{~V}\), \(P_{D, \max }=35 \mathrm{~W}, V_{T N}=4 \mathrm{~V}\), and \(K_{n}=0.25 \mathrm{~A} / \mathrm{V}^{2}\). The circuit parameters are \(V_{D D}=40 \mathrm{~V}\) and \(R_{L}=10 \Omega\).

(a) Sketch and label the safe operating area for this transistor, using linear current and voltage scales. Also sketch the load line on the same graph.

(b) Calculate the power dissipated in the transistor for \(V_{G G}=5,6,7,8\), and \(9 \mathrm{~V}\).

(c) Is there a possibility of damaging the transistor? Explain.

Transcribed Image Text:

VGG VDD T RD Figure P8.1