如下圖，3842和ir2110分別仿真都是有正確的波形的，但是不知道為什么將3842的output送入ir2110的輸入（為了試驗(yàn)我將HIN和LIN接到了一起），然后DC分析就不能通過(guò)了，提示：
The no_ramping algorithm failed. Trying the dyn_ramping algorithm.
The dyn_ramping algorithm failed. Trying the gmin_ramping algorithm.
Cannot solve with gstep reduced to 0.97337738090392
The gmin_ramping algorithm failed. Trying the static_ramping algorithm.
The static_ramping algorithm failed. Trying the den_ramping algorithm.
Automatic algorithm selection exhausted
*** ERROR "ALG_SINGULAR_JACOBIAN" *** Singular Jacobian matrix.
Some possible causes for a singular Jacobian matrix:
- Model operating outside of its intended region of operation.
- Node/subsystem with no connection to the reference (floating).
- Current loops (voltage sources/inductors in parallel).
- Missing equation and/or missing variable reference.

Potential problem variables/equations:
/uc3842.uc3842_1/d.d1/pi

但是3842沒(méi)有d這個(gè)管腳的??！這個(gè)問(wèn)題已經(jīng)困擾了我很多天了，還請(qǐng)各位大蝦不吝賜教，謝謝?。?


下面是我用的電路圖：
1117452272.ai_sch