ABSTRACT
In this paper, a totem pole output circuit, which is suitable for driving NMOSFETs and can provide large sink current and source current, is designed for a current mode PWM controller. Under the condition that the whole circuit can operate normally, the circuit is simulated by CADENCE Spectre, and the simulation results show that 70.63 ns rise time and 74.58 ns fall time are gained when several transistors are designed elaborately. The low level is 0.13 V when the sink Isink = 20 mA is linked at the output terminal and the level is 1.86V at Isink = 200 mA. The high level is 13.62 V when the source Isource = 20 mA is placed between the supply and output terminals, is 13.36 V at Isource = 200 mA. The results prove that the totem pole output circuit presented in this paper meets the design requirements.
