3842和ir2110的saber仿真問題求助！

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（為了試驗我將HIN和LIN接到了一起），然后DC分析就不能通過了，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沒有d這個管腳的啊！這個問題已經(jīng)困擾了我很多天了，還請各位大蝦不吝賜教，謝謝！！