Hey Rajat,
You are correct, my mistake. I've fixed your calculator sheet. Your capacitance and bandwidth were too low to support your undershoot requirements. The excel sheet attached has component values that give a 6mV undershoot. You can double check…
Part Number: TPS544B25 Hi Team,
We are using TPS544B25 to generate the core rail of FPGA.
Can you please review the excel sheet of all voltage rail ?
Voltage and current requirment are in excel sheet name.
TPS544B25_CalculatorTool_0.78V_12A_VCCINT…
1/10 of the switching frequency is a good choice.
The bandwidth corresponds to how fast the loop response is, so higher bandwidth means the output voltage can recover much more quickly during load transient.
Here is a design tool/checklist to help…
TPS544B25_TPS544C25_Calculator_Checklist_1p0.xlsx TPS544C25 WEBENCH design report.pdf
Using the calculator, I have entered the value of capacitors in my feedback network taken from the Webench report (both attached)
Here, R1=Rfbt=10k R2=Rcomp2=1k…
Hi Lalit
The resistor divider looks ok. Keep the C3295 330pF as a placeholder but do not populate the capacitor.
To review the overall schematic, I have attached a calculator/checklist to help with this.
Regards,
Gerold
TPS544C25_Calculator_Checklist…
INGI MIK
INGI MIK said: Question: What is the reason for the PG activating at -5% instead of the datasheet's specified -10% Undervoltage threshold, and what modifications are needed to adjust it to -12%?
The reason PGOOD is responding to less…
Part Number: TPS543C20 Other Parts Discussed in Thread: TPS543B20 , , Tool/software: Hello
I designed a DC/DC for 12V to 1.2V 20A load. The problem is that when I just use a 0.5ohm load which is around 2A, it is fine, but when I increase the load to…
Hi,
I reviewed the TPS543C20A schematic and there is only one issue I notice: With your current configuration the expected current limit is 42.5A, with 10% tolerance plus resistor tolerance, the margin might not be large enough to support 39A full load…
