Part Number: LM51561-Q1 Other Parts Discussed in Thread: LM5156 , LM51561 Tool/software: Hi,
I'm trying to simulate flyback circuit with LM5156 controller with LTspice. Would it be possible to get unencrypted spice model?
I also have tried to use tina…
Part Number: LM51561 Tool/software: hi team
I want to use LM51561 to design a flyback isolated power, Vin =48V normally, Vmax = 55V, Vmin=45V.
two groups isolated power output.
1, +90V/500mA, +45V/500mA, share ground.
2, +/- 15V/200mA, +5V/500mA, share…
Hi Niklas,
of course I use a ground plane (dark blue in the pdf). As mentioned in your datasheet, the current is measured between CS and PGND. So I connected PGND to the ground side of the current sense resistors, which are connected to the ground plane…
Part Number: LM51561 Hello team,
My customer would like to design flyback converter with FPWM mode operation.
I have little knowledge about flyback, but is it possible?
I looked for TI flyback controllers, but none of them states that it can operate in…
Part Number: LM51561-Q1 Other Parts Discussed in Thread: PMP31279 我参考的是官方的PMP31279的设计,其输入输出参数为 VIN 6-12V ,VOUT = 12V, IOUT = 1A.现在我将其参数原封不动的不变,实际测得最低启动电压,确实是6V,现在我想使启动电压的更低,因此,我将其第12脚(UVLO_SYNC)直接上拉至VIN,然后将从VIN连接到BIAS脚的二极管,更换为压降更低的肖特基二极管,实测下来最低启动电压,能够达到4…
Part Number: LM51561 Other Parts Discussed in Thread: LM5156 I am currently designing a SEPIC converter with the LM51561 but am finding conflicting information online on how to calculate the required inductance of the coupled inductor. I have attached…
Hi Oba,
there is an application report discussing softstart for flyback:
https://www.ti.com/lit/pdf/snvaa44
Note: CCM or DCM does not have an (significant ) impact on the softstart time.
Best regards,
Stefan