Part Number: UCC2808A-1 Hi,
The datasheet lists IDD < 10mA with VDD at 15V.
However the sink current peak at VOUTA and VOUTB is 1A.
Isn't this current supplied by VDD?
If that is correct, is the average IDD < 10mA because those peaks are supplied…
Part Number: UCC2808A-1 Other Parts Discussed in Thread: UC2843 , Dear Guys:
In soft start，Change UCC2808A Pin 1(COMP) PWM from 0% to 50%，The expected comp voltage is from 0V to 5V.
However, it is actually increased to about 1.5v, and this voltage will…
Part Number: UCC2808A-1 Is it possible to achieve a circuit of Fig.2 of ucc2808 data seat? The input voltage area which is 72V from 36V by Push - Pull system, can it correspond?
Part Number: UCC2808A-1 Hi Team
for UCC2808A, calulating the proper sensing resistor is by { TYP overcurrent threshold[V] / OverCurrent[A] = 0.75V / OverCurrent[A] } ?
Other Parts Discussed in Thread: UCC2808A-1 I have quetions of UCC2808A-1.
1. stability
I think UCC2808A-1 is the voltage control by the width of ON time. Is this correct?
If it is correct, I think it is difficult to keep the stability of the wave shape…
Other Parts Discussed in Thread: UCC2808A-1 , TL431 Hi,
i will build a unregulated Push-Pull-Converter with the UCC2808A-1.
At fixed 200kHz it should run at nearly 90% Duty-Cycle.
The Current should be limited at nearly 1,2A.
I'm a little bit confused…
Hi Kato-san,
You can consider using the UCC28C44 or the UCC2808A, family of parts.
http://www.ti.com/lit/ds/symlink/ucc28c45.pdf
https://www.ti.com/lit/ds/symlink/ucc2808a-1.pdf
Regards
John
Part Number: UCC2808-2 Other Parts Discussed in Thread: UCC2808A-2
Dear TI
I think ucc2808a pdf has a wrong information in table 1.
Second line , UCCx808A-1 --> UCCx808A-2??
Best regards
Choi
Hello Watchaphong,
You could use the LM5030 for such an application however 100kHz is below the minimum operating oscillator frequency of the ic.
You should consider using the UCC2808A-1 or the UCC2808A-2 which is another push pull controller and can be…
Dear Colin,
Thank you for reply,
I tried same spec on my pc, unfortunately there is difference in current (marked RED color) on my screen ?
Could you please clarify , i attached screenshot.
1) what is "Transformer inductance" & "Inductance" marked RED…
