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 are the…
Part Number: LM51561-Q1 Other Parts Discussed in Thread: PMP22817
I'm designing a 12V-24V SEPIC using LM51561-Q1 controller following the SEPIC excel sheet calculator.
I understand since the D>50%, special care should be giver for current reference…
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 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 Dear team,
My customer uses our device's flyback topology with Primary-Side Regulated. They set Css=110nF, so Tss should be 11ms.
From below first picture, Tss's start point should be the first pulse of gate, and the end point…
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…
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 and…
Part Number: LM51561-Q1 LM5156EVM Flyback Hiccup Overcurrent Test Report.docx The attached is the LM5156EVM Flyback hiccup overcurrent test report.
The Css =0.01uf, Vin=20V,f=250k.
The curves are Vsw, Vout and Vss .
My question:
What’s the relationship…
Part Number: LM51561-Q1 Other Parts Discussed in Thread: LM5156-Q1 , LM2611 , TLV271 , , TPS54202 , LM5013 , LM5013-Q1 Hi Team,
Currently, we have some power circuit designs that require as below:
Q1: Vin: DC+12V, Vout: -4V~ -21V /IccMax:2A
Q2:Vin: DC+12V,…
Part Number: LM51551 Other Parts Discussed in Thread: LM51561-Q1 Tool/software: Hello, I am working as safety hardware engineer for Magna Powertrain.
In our project we use LM51551QDSSRQ1 and LM76202QPWPRQ1 integrated circuits and we would like to have…