1)在使用DAC8771中我开启了内部buck---boost,数据手册8.3.3.2中说明,When used in voltage output mode, the Buck-Boost converter generates a constant ±15.0 V for the positive andnegative power supplies.,当在电压输出模式下使用时,Buck-Boost转换器为正负电源产生恒定的±15.0V。
2)而我测量正负电源的电…
Other Parts Discussed in Thread: UCC2897A , LM358 想要做有源箝位正激变换器的Saber仿真,开环没问题,闭环由于Saber中没有UCC2897A模型,想自己用运放外搭控制电路,但是仿出来的驱动波形跟设想的差别很大(具体请见附图),求大侠指导,是逻辑有问题还是器件选的不对?
图注:short3是原边电流,有很大的尖刺,不知道哪儿造成的;CS是电流采样信号,经过了RC滤波电路;n_1060是电压调节器输出;main是主管驱动(用逻辑开关代替的MOS管);n…
Other Parts Discussed in Thread: TPS65131 Using the TPS65131 to design a ±15V power supply, the positive power supply works normally, and the negative power supply cannot be loaded. What is the problem? 0361.NLPH3.pdf