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（讨论）用IR2110做MOSFET全桥驱动,为什么高端HO没有输出呢?

power_biso

我用IR2110驱动由IRF540N组成的MOSFET全桥,我先调的单臂,即Q3/Q2;输入为PWM2波,负载采用功率电阻代替直流电机.但测不出IR2110高端输出波形.VDD=VCC=15V,2个电源滤波电容为10u/35V/钽,BOOT电容为0.47u(CBB),二极管为MURA110T3,栅极电阻为15欧.我的测试点为示波器探头的地端接IR2110的Vs,信号端接IR2110的Vb.