Hello, I want to design a wide-range input flyback converter with an input voltage of 120-1300VDC and an output of 24VDC using a dual-switch cascaded flyback circuit like PMP41009. Are there any other chips that can meet this requirement besides UCC28740…
Part Number: UCC28740 Other Parts Discussed in Thread: PMP41009 Hello, I plan to use the UCC28740 chip to design a wide-range dual-transistor flyback converter with a structure similar to that of the PMP41009. Its specifications are as follows: output…
Other Parts Discussed in Thread: LM51770 The LM51770 will be damaged. Both the input and output voltages are within a reasonable range, but VCC shorts with other pins. I also designed it by referring to the design manual. The ISNSP and ISNSN pins on my side…
Part Number: LM139A Other Parts Discussed in Thread: LM239 , LM339 , LM2901B , LM339B , LM2901 Dear Madam/Sir,
For LM139AD, there have 3 questions from my side:
What is the output of LM139AD when input voltage higher than 30V&36V or lower than 2V? If it will…
感谢您的回复，再TRM里面找到这段话，
The input supply of DCDC can range from 2.2V to 3.8V. DCDC regulates the output to 1.5V. But for GLDO, the
supply can range from 1.71V to 3.8V to generate a regulated output of 1.5V. DCDC hardware is designed so
that when the supply…
Part Number: OPA858 Dear Engineer,
I would like to ask a technical question regarding the OPA858DSGEVM board I purchased earlier.
At first, the board did not work when I applied a signal to the inverting input. After reviewing the schematic, I suspected…
Part Number: TPSM33615
Currently, we need to design a power conversion circuit with an input of 28V and an output of 12V. However, when using the calculator for design calculations, the absence of a model option corresponding to the 12V output has led…
Part Number: TIDA-010257 Hi team,
In the three-phase Vienna converter design of TIDA-010257, my AC input frequency range is from 75Hz to 270Hz. Can this range be covered by modifying the control and improving the PLL? Is it necessary to redesign the filter…
I am sorry for not being clear before. Yes, I was talking about 'Voltage Output Swing from Rails'. There is no relationship between the zero-crossover input stage and output voltage swing from rails. However, the key difference between the OPA365/OPA4325…
