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Loop Analysis
Generic transfer function analyser To Top

Figure:General Transfer function
The Loop Analysis provides the interface to customize the transfer function and shows the open-loop gain and phase graphs.
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Change transfer function coefficients (ai and bi)? To Top

Figure:Input Interface
Input ai and bi with using this interface. You can set the number of parameters by setting n.
Define the range of each coefficient for Automatic Compensation? To Top

Figure:Range of parameters for Automatic compensation
We provide the interface to find the parameters from the given ranges. This function is called "Automatic Compensation". You can tick the parameters you want to adjust for compensation or un-tick it to use the default value
Draw any transfer function. To Top

Figure:Compensation Setting
Click on "Compensation Setting". You can set the expected Gain and Phase at different frequencies. Then, close this window and click on "Automatic Compensation"
Change after Automatic Compensation To Top

Figure:Gain and Phase after Automatic Compensation
After Automatic Compensation, the gain and phase will response as the Compensation setting at different frequency. The adjust ai and bi are shown at the parameter setting interface.
Non-linear Load Transient Analyzer To Top

Figure:Transient Analysis
Trigger Transient Analysis by clicking on this button.
How to set the Step loading in Transient Analyzer? To Top

Figure:Transient Analysis Loading Setting
In Transient Analysis, you can set the step loading current with this interface. Click on "Recalculate" to save the setting.
How to set the Sine loading in Transient Analyzer? To Top

Figure:Transient Analysis Loading Setting
Check the "sine loading" selection and set the upper and lower limit of sine loading. Click on "Recalculate" to save the setting.
What does the curve tell? To Top

Figure:Transient Response
This is the transient response of the circuit at "Advance User Setting"
Advance User Setting in Transient Analyzer? To Top

Figure:Advance User Setting
Click on "Advance User Setting" at Loading Setting. You can set the Output Impedence, Output Capacitor, Output Inductor, Loading Capacitor, Max. positive current and Min negative current to customize the Transient Loading Response.
Loop Analysis of the whole power supply? To Top

Figure:Loop Analysis
After initializing the power supply design, the transfer function of the power supply is the product of the transfer functions of 3 modules: Converter (e.g. Flyback), Controller (PWM) and Compensation (Feedback).
Automatic Compensation - optimizing gain and phase margin To Top

Figure:Automatic Compensation
You can set the expected Gain Margin, Phase Margin and Cross-over Frequency calculated by Automatic Compensation.Similar to the standalone Loop Analysis, you can set the expected gain and phase at different frequencies. Or you can use the default setting
by the expected value set before. Click on the "Automatic Compensation"
How can feedback parts can be changed? To Top

Figure:Automatic Compensation of circuit
The transfer function is set by 3 modules. During the Automatic Compensation, some of resistors and capacitors in the 3 circuits are changed so to adjust the gain and phase value at different frequency. Different circuits may have different set of resistors and capacitors as the variant.
On what bases are the feedback component modified? To Top
The transient analysis is based on the transfer function from 3 modules to simulate the transient response during the operation of power supply.
Corresponding transient response? To Top

Figure:Select output
You can select the output that you would like to monitor the transient response.