The Tapped Inductor Switcher model of the DC-DC Converters

The steady and dynamic model of TIS blocks can be used to solve the steady-state solution of the circuit and the small signal model

This model is suitable for modeling high-gain DC-DC converter with coupled inductance. TIS model in the document includes voltage mode control, average current mode control, and current peak mode control.

Each TIS model contains steady-state model and small-signal model, and the steady-state model can be used to solve the steady-state solution of the DC-DC converter. The small signal model can be used to calculate the expression of the transfer function, which is convenient for the design of compensation network.

Introduction to the document:

1）：The voltage control model includes CCM and DCM models, as well as low-order and high-order converter models.

2）：The current peak mode control model （CPM）is mainly for the modeling of low-order and high-order converter models in CCM mode, and can be further divided into internal sampling model and external sampling model according to the location of sampling resistance.

3）The average current mode control model （ACM） is mainly aimed at the CCM mode low order DC-DC converter model.

Operation steps:

1) : Analyze topology, deconstruct TIS components, mark port numbers, and determine voltage and current symbols and directions.

2) : Determine TIS component parameters according to the references.

3) : confirm the connection of the external linear network, establish the circuit model, and put the steady-state and small signal model into the circuit according to the port order, so as to obtain the steady-state relationship expression and dynamic characteristic transfer function equation.