Part Number: TPS40422 Tool/software: Hi Expert,
May I have your help to check this case ?
Does TI have a version or could reprogram the TPS40422 Dual-Output or Two-Phase Synchronous Buck Controller with PMBus Interface where VOUT_MODE pmbus command is…
okay, then i assume for TPS40422 READ_VOUT, with 16 bit unsigned mantissa and a fixed exponent -9, the full range is 128V with resolution is 128/65535=1.9534mV, even though the actual measurement range is 5.8Vmax due to TPS40422 internal limitation. Kindly…
Part Number: TPS40422 Hi TI experts,
When keep monitoring the TPS40422 output voltage (1 minute interval) through PMbus, observed high voltage spike randomly.
example for 2.5V output:
2023/07/30 19:50:29 A-TPS1-1 crossed threshold (range: 2375mV - 2625mV…
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,
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…
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 Other Parts Discussed in Thread: CSD87350Q5D , Hello,
My customer has a problem with the power MOSFET CSD87350Q5D used to build the TPS40422 circuitry being damaged in the field.
When only CSD87350Q5D was replaced, the same symptom…
