i've been googling about bode plot in the net, and all are talking about transfer functions which makes me dizzy. let say i'm in a situation where i have a blackbox circuit, all i can do is inject a signal (input) and measure the output. from that alone how do i plot a bode c...
Make Full Gain and Phase Sweeps and Plots in LTspiceTo create a full Bode plot, a graphical sweep of gain and phase, in LTspice for the control loop, follow these steps.Step 1: Create the AC Injection SourceIn LTspice, insert the ±10 mV AC injection voltage source and injection...
这会比较直观,但LTspice需要多个步骤制作波德图。第一步是运行仿真,暂不生成图,只显示正常范围的电压和电流测量值。按照以下步骤生成波德图。 第6步:制作波德图 右键单击原理图窗口,打开"SPICE错误日志",选择Plot .step'ed .meas data。从"画图设置目录"中选择"可见曲线",然后选择"增益"来绘制数据。或者,可通过...
Figure 1. Switching regulator control loop Bode plot measurement with a network analyzer for (a) voltage regulator and (b) LED driver. To make the measurement, the control loop is broken and a sinusoidal perturbation pushes into a high impedance path, while the resulting control ...
As mentioned in Part 1, the components or keywords in an IBIS model depend on the model type. Table 1 summarizes the components of a basic IBIS model, depending on the Model_type.The Use CaseIn this article, an LTspice model of a hypothetical ADxxxx device will b...
[Power_Clamp] represents the overall behavior of ESD devices referenced to VDD, while the ground clamp shows the overall behavior of the ESD devices referenced to GND.In LTspice, I-V data can be measured using the .DC SPICE command/directive. The ground clamp of DOUT1 is ...
In all filter design, one needs to not only consider the small signal behavior, such as a transfer function of a filter in a Bode plot, but one also needs to be aware of the large signal effect. In any LC filter, power runs through the inductor. If that power is not needed at the...