Part Number: UCC28910 Hi,
The equation is shown to calculate the ID_PK(max) on the datasheet as below.
Though VCCR is used on the equation(28), is this correct?
This is not VCCR but VCSTE(max), right?
Best Regards,
Kuramochi
Part Number: UCC28910
Hi,
VCCR is defined as CC regulation constant and it decides ID_PK as equation(28) with RIPK.
However, VCCR is nothing in figure 27(control law profile).
What is the role of VCCR?
Best Regards,
Kuramochi
Part Number: UCC28910
Hi,
I have a question regarding 10.2.1.1 Design Requirements of the dahasheet.
fLINE is defined as below;
However, it is calculated as below though the minimum frequency is 47Hz.
Why is 57Hz used on this calculation?
Best Regards…
Part Number: UCC28910 Hi,
It is written that "If the DRAIN current exceeds a second level of current (VCSTE_OCP2 / RIPK) it is not necessary to detect the fault for three consecutive switching cycles, the device will stop switching immediately." on the…
Part Number: UCC28910 Hi,
RIPK equation is shown (24).
However, the square root is eliminated and multiplying two is added on equation(26) as below;
Is equation(26) correct?
Best Regards,
Kuramochi
Part Number: UCC28910
Hi,
RPL is calculated as below;
fMAX is used in equation (32), on the other hand, fsw(min) is used on equation(33).
Which is correct?
And, fsw calculating 6.8kΩ is 592Hz as the attached file.
fsw.xlsx
Why was 592 Hz applied…
Part Number: UCC28910 Other Parts Discussed in Thread: UCC28C42 Hi,
My customer is considering using UCC28910, the load current is 40mA(max).
In this case, Lp(min) is too large as below;
They would like to reduce this inductance.
Should the dummy load…
Part Number: UCC28910 Hi,
VCCR is defined at equation (28).
According to equation (29), VCCR is 540.
However, "540" is not specified on electric characteristics.
Is this typo?
Best Regards,
Kuramochi
