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…
Part Number: TPSM82823A Other Parts Discussed in Thread: TPS543C20 , TPS543B20 , TPS543C20A , TPSM82821A Tool/software: Hi team,
My customer would like to confirm frequency response of TPSM82823A. Becuase my customer plans to optimize the value of feedforward…
Hi Matt,
The excel tool does not estimate efficiency but I can use our bench data (published in the datasheet) to make an estimation. To achieve a 90% ripple, I would recommend the 500kHz. With a frequency greater than 1MHz it will be difficult to achieve…
Hi Jonathan, Yes, the values in the datasheet are what is to be followed. WEBENCH is also using the correct pin strap resistor values. Attached is the updated excel calculator tool. The 10kOhm resistor value should result a 400kHz fsw. Recommended for…
Part Number: TPS543C20 Other Parts Discussed in Thread: TPS543B20 , , Tool/software: Hi Team,
I am using TPS543C20RVFT for Vin=12V, Vout=0.75V and Iout=40A. Please verify the schematics for the same.
Regards,
Shifali N
0882.TPS543C20RVFT.pdf…
Hello,
I assumed the maximum load current of 40A for this application, given that the ILIM was set appropriately for a 71A over-current protection. If the load current requirement is significantly different, you may recheck the design using the attached…
Hello Hiroyasu,
I attached some design tools you use to further estimate the VIN ripple with respect to the CIN and VIN. Use equation 7 and 8 from the datasheet to figure our the required ESR. ESR is another parameter that you need to lower as possible…
Part Number: TPS543C20 Other Parts Discussed in Thread: TPS543B20 , , Hi Team,
I am using TPS543C20RVFT in my design and the design parameters mentioned as below:
Vin=12V
Vout=0.85V
Iout=40A
I have attached the circuit design and would like…
Part Number: TPS543B20 Other Parts Discussed in Thread: TPS543C20A , TPS543C20
Hi Team,
1. I am using TPS543B20RVFT in a stacked configuration and the design parameters are mentioned as below:
Vin=12V
Vout=0.85V
Iout=50A
I have attached the…
Hi Rock,
The problem is likely related to the chosen L & COUT values. The inductor value, 2.2uH, is higher than the maximum allowable inductance for proper sensing. With a 25A solution, the maximum inductance is 1.22uH. The output capacitance is also…
