Part Number: UCC2809-2 Good morning ,
In 2009 I asked TEXAS instrument for a reference design based on the UCC2809-P-2 PWM controller. Texas Instrument provided me with an application drawing, a BOM and a measurement report specific to my application…
Part Number: UCC2809-2 Other Parts Discussed in Thread: TL431 PMP4113_REVF_BOM.XLS PMP4113_REVF.PDF
Good morning ,
In 2009 I asked TEXAS instrument for a reference design based on the UCC2809-P-2 PWM controller. Texas Instrument provided me with…
Part Number: UCC2809-2 Hi,
We could see the Absolute Maximum Junction Temperature is given as 150degC.
What would be the Recommended Maximum Operating Junction Temperature ? Is it only 85degC? or More than this.
Also, the datasheet doesn't have…
Hello,
customer requests ORCAD and PCB layout design file of ref. design PMP4068, could you check anything possible we can offer this for customer? thank you.
William Chen
Hi Folks, TI Support refused to answer this because it is a technical (!) question. Weird, weird ... So, here goes: The UCC2809-2 datasheet is missing the absolute maximum rating for the FB pin (feedback pin). For a new design we need to know that limit…
Part Number: TPS2372 Other Parts Discussed in Thread: TPS23880 , UCC2809-2 Hi Team,
we want to have hogh-power (802.3bt) input and output capability. The output is on 2 ports. Input on a single port. Gigabit throughout. Basically a 3 port gigabit switch…
I found a reference design for 18 - 32 VAC input to 12 V @ 3 A and 5 V @ 2.5 A output. Pretty similar to your requirements. It is isolated however and does use quite a bit of filter capacitance (3 x 1000 uF). It uses UCC2809-2 controller. I also found…
Actually the UCC2809-2 needs 15.6V to start, the above math would be correct for the UCC2809-1.
For the UCC2809-2 the start up time with R400=20k would be ~200ms. to get the 20ms R400 would have to be <2k
Richard
