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-Q1 Other Parts Discussed in Thread: TPS40210 , LM5155 Hello together,
currently, I'm working on a new DCDC converter. For that, I would like to do some simulations in MATLAB Simulink. Therefore I would like to ask, if a working…
Part Number: LM51561-Q1 Other Parts Discussed in Thread: LM5156 Hi,
I have tried importing the unencrypted SPICE model in the LM5156 product folder into LTSpice and it is giving error. When I looked at other posts in this forum there was one with a…
Part Number: LM51561-Q1 Other Parts Discussed in Thread: LM5156 Tool/software: Hi,
I want to design a boost converter to have a 160V/50W output, max 80W. The input voltage is between 9-30V so I did a flyback design with the LM5156. I attached the SNVC240…
Part Number: LM51561-Q1 Dear team,
When the FB pin voltage is smaller than Uuvth, PGOOD will go low. If PGOOD is low, how does the output change? Will the output be turned off?
Thanks & Best Regards,
Sherry
Part Number: LM51561-Q1 Hi Expert,
Our customer use LM51561-Q1 as flyback. The simple circuit is as below. And they are testing 12V output short to battery issue. The other three output is open load, only 12V output has 25ohm and then short to battery…
Part Number: LM51561-Q1 Hi Expert,
Our customEr use LM51561-Q1 as flyback. But the simple schematic is as below. The inputs voltage is 12V and have four output rails. But they find a very weird situation when changing to open load. The switching frequency…
Part Number: LM51561-Q1 Hi Expert,
Our customer uses our LM51561-Q1 in a flyback application. They test GATE pin and it shows as below. They set the frequency as 100kHz. But as you can see below, the duty cycle is varying. The black square is ~38.5kHz…
Part Number: LM51561-Q1 Hi team,
In the current design I am trying to use the LM51561-Q1 as a SEPIC controller.
The specifications are:
Vin range = 7 to 17 V
Vout = 12 V
Iout max = 2 A (nominal 0.6 A)
switching freq = 2.2 MHz
The schematics…
Part Number: LM51561-Q1 Dear team,
The customer use external VCC as below. They hope the gate voltage is 18V(maximum=18.5V), but our VCC's recommendation value is small than 16V. Do we have any suggestion to achieve Vgate=18V?
Thanks & Best Regards…
