Hi,
I have attached the circuit calculator with this design's component choices. I believe these choices should be stable.
What is the load current approximately when you plug in the module? Another thing to check is if the inductor. From the schematic…
Part Number: TPS40170 Please help to apply the excel file(TPS40KType III L TPS40KType III Loop Stability kVenable_sluc263c-071312.xls oop Stability kVenable_sluc263c-071312) detail calculating formula and lock password for our reference?
Part Number: TPS40170 Customer found the output response issue during Dynamic load test as below diagram.
We tried to use the TPS40170 design tools for R/C compensation calculation. But as a test result, we found there is a oscillation on output voltage…
Amir,
I made a couple last tweaks to your compensation. See the enclosed. Webench is supposed to maintain up to date libraries, but who knows ? TPS56221_final-1.xls
Part Number: TPS546C20A Other Parts Discussed in Thread: TPS546C23 , I am facing two issues with TPS546C20A on a single phase design.
Input: 12V
Output: 0.845V 30A
Issue 1: On the measured loop gain, at the low frequency region (1kHz to 4kHz,…
Hi Jospeh,
Thanks for your inputs.
I have updated the power calculator and selected suitable Feedback and compensation network. Please review the schematics and power calculator bode plots and provide if any review comments. I would like to release…
Part Number: TPS40057 Hi,
I am considering TPS40057 for VCOM of LCD circuit. I will attach the circuit diagram and calculation result I created. The constants of the circuit diagram are provisionally input. The final constant value is still under consideration…
Part Number: TPS40057 Hi,
I am considering a sink circuit using TPS40057. Operating condition = input 12 V ± 10%, output 2.5 V, output current -1 A (sink only) Used as power supply for LCD Vcom. The circuit constants are determined based on the calculation…
Sebastian ,
Can you please provide input and inductor current waveform when the output goes low ?
Further here are few comments on your layout and Schematic :
1. I dont see any decoupling cap on Vin pin of the device . Please place a cap as close…
