This is non-isolated design. Function of flyback is just step down the 400V bus to various rails 15V/12V/5V etc not the isolation.
You need these two connected otherwise all sensing signals, GPIOs and PWMs won't have same reference.
If you isolate…
Other Parts Discussed in Thread: LM5180-Q1 , TINA-TI 请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。 https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1584230/lm25183-lm25184design-calc-request-for-stability…
Other Parts Discussed in Thread: PMP41009 , UCC28740-Q1 , UCC28740 , UCC28742 Hi，May I ask if I can replace the UCC28740-Q1 chip in the PMP41009 design circuit with a chip from the UCCx8C5x series? If not, what is the reason? Can chips from the UCCx8C5x series…
Part Number: PMP41009 Other Parts Discussed in Thread: UCC28740 , Hello, I am debugging a self-designed flyback switching power supply with an input of 90-900VAC and an output of 24VDC. I use the UCC28740 chip and adopt the relevant power supply circuit…
Other Parts Discussed in Thread: WEBENCH-CIRCUIT-DESIGNER , LM5143A-Q1 , LM5143DESIGN-CALC 请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。 https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1592529/webench…
Other Parts Discussed in Thread: TPS548A20 请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。 https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1593935…
