JAJSBY0G August 2012 – June 2018 TPS54360
The TPS54360 uses a transconductance amplifier for the error amplifier and supports three of the commonly-used frequency compensation circuits. Compensation circuits Type 2A, Type 2B, and Type 1 are shown in Figure 30. Type 2 circuits are typically implemented in high bandwidth power-supply designs using low ESR output capacitors. The Type 1 circuit is used with power-supply designs with high-ESR aluminum electrolytic or tantalum capacitors. Equation 15 and Equation 16 relate the frequency response of the amplifier to the small signal model in Figure 30. The open-loop gain and bandwidth are modeled using the RO and CO shown in Figure 30. See the application section for a design example using a Type 2A network with a low ESR output capacitor.