Part Number: TPS40422 Hello,
My customer has a problem that the output of the TPS40422 CH2 below does not operate normally during production.
TPS40422.pdf
Failure symptom is as follows.
1. A drop in the 5V output voltage of Phase 2 occurred in some parts…
Part Number: TPS40422 Hello,
My customer has a problem that the output of the TPS40422 CH2 below does not operate normally during production.
TPS40422_SCH_2022.11.30_2.pdf
When they replaced the TPS40422 with another or changed the C22 capacitor value…
Part Number: TPS40422
Hi expert,
Customer has a product in production for years used TPS40422 and got some failure returns showing OT fault however it's just room temperature. They found out it was due to the BJT aging cause the Vo become good once a…
Part Number: TPS40422 Hi All,
Can someone help with the details of thermal resistance values (Rjc, Rjb) for TPS40422? I verified the data sheet, this information is missing in it.
I would recommend TI to verify and add the thermal info to data sheet. …
Part Number: TPS40422 Hi,
I want to understand the current consumption of TPS40422 device.
Application details:
1. Driving external MOSFET
2. Vout1 & Vout2, different voltage rails.
3. Output current: ~20A each
5. BP3/BP6 regulators , no external…
Hi JH,
Here is my explanation:
1- overshoot/undershoot and ringing caused by parasitic inductances and capacitances from power FETs and PCB layout
2- Overshoot/undershoot and ringing are more severe with fast switching edge
3- Overshoot/Undershoot and…
Part Number: TPS40422 Other Parts Discussed in Thread: TPS40322 , can you share the TPS40422/TPS40322 DCR sense design workbook with me?
I have 12Vin 1.2Vo, 7.5A application, 1uH (4.2mohm DCR), 400khz fsw, want to use 0.1uF and 2.37K for DCR sense, pls…
Part Number: TPS40422 Hi Expert,
Customer would like to choose temperature sense transistor 2nd source of MMBT3904 which we used on the EVM. Could you please share what parameters should we consider when select the transistor?
Thanks.
Allan
Part Number: TPS40422 Hi TI Expert,
what's the status of SMB_ALERT status on TPS40422/25/28? is it open drain and need external pullp-up? i can't find the description from datasheet.
Thanks.