Hello, I want the datasheet of the following inductor used on the reference design of PR779 too. But I can't contact with Vitec. If you have it, please give me the datasheet.
L1, L2 : AF4860
Best regards
Hello,
This power range is 960 W. You will need a PFC pre-regulator at this power level. You may consider using the UCC28070 to power factor correct (PFC) the input current and convert the AC line voltage to DC. This is typically 85 to 265 V AC in to…
Hi
The diagram in the datasheet is a simplified circuit.
The EVM is a better use case as it takes the signal from before the bridge where the zero crossings will be more clearly defined at lighter loads. Once the AC line has been rectified by the bridge…
Hi John,
Got to know that PR779 have THD optimization and THD could reach <5% at full load, could you pls share us the detailed test report for this design? it's not able to achieve on TI.com. thanks.
http://www.ti.com/tool/PR779
Hi Milind
I recommend you use a two stage approach, PFC + DC/DC isolation stage. For the PFC I suggest the UCC28180 and if you follow this link you can find a list of reference designs that use this device, www.ti.com/.../index.html
For the DC/DC stage…
Hi
You need a two stage approach, PFC + DC/DC isolation stage.
For the PFC stage I recommend the UCC28180 PFC controller or the UCC28070 two phase interleaved PFC stage controller
www.ti.com/.../description
www.ti.com/.../UCC28070
For the DC/DC stage…
Hi
I assume you need an 85Vac to 265Vac input voltage range?
The output is 1.2kW so it will most likely need a PFC front end to converter the AC line to a 380V to 400V BUS and then a phase shifted full bridge to converter the PFC DC voltage down to 12V…
Part Number: UCC28070 In the schematic of 300W PF circuit, schematic shows only two Switching mosfet used in boost converter. But in 1.2KW schematics PR779 shows 4 mosfet (Q3, Q4, Q5, Q6) for boosting. My doubt is why these two additional mosfets are…
PN Note: (-Q1) when auto PN is substituted
Description
Link
Input Voltage
Output Voltage
Output Power
OBC
EV Charging Station
DC-DC
Topology
LM5021 (-Q1) + UCC28180
PMP10215 Universal Input to 3.3V, 12V…