Part Number:TPS386000
Hi!
Is it possible to somehow have an individual start up delay for TPS386000 watch dog timer while still using all 4 channels for voltage supervision?
The 600ms polling window for the WDT (after the start up) is not long enough for the processor to boot up and send a signal to WDI.
Do you have a suggestion how to accomplish that?
Thanks a lot!
Marcus
Part Number:LM25088
I have built a prototype PCB with the LM25088-2. (+15V In, -12V out).
Using the Webench, I have designed it to be able to output up to 3.5A
So far I have only connected a small load of about 15-20mA and am getting the correct voltage on the output. However the input is drawing approximately 100mA, and the thermal pad for the LM25088 is getting really warm. The MOSFET and DIODE don't seem to be generating heat, although it's hard to tell since they are a little bit warm (I assume from proximity to the chip.)
So my question are:
Is this normal for this configuration? I am not a pro in this field but that seems very high, especially since the MOSFET and DIODE are external
Any ideas where I should start looking? I may have applied too much heat to the active components when soldering with hot air.
Any help much appreciated!
Part Number:BQ30Z554-R1
Hi
our new project use bq24715 charge 2S battery use BQ30Z50 for battery manager ic.
sometimes could not full charge ,because the charge current is unstable between 100mA~500mA when charge to 99%,
our stop charge current is 200mA, the F/R=1/100, and this issue only happpen at first time or second time in our NB.
could you please support some metherd debug this issue.
the attach file is the charge log when issue happen.
ywanglin 186649083545(Please visit the site to view this file)
Part Number:BQ25601
Dear Team,
I'm experiencing an issue with VSYS regulation to be above programmed level. According to the datasheet Figure 15, when VBAT<VSYSMIN, VSYS should be stepped up to the value stored in 0x01 register. However, I can't get this feature to work (VSYS follows VBAT regardless of battery voltage), either with input adapter present or not. Below there's a fragment of the schematic of our board with the charger. The registers values during the test are 04 1E A2 22 58 9F 66 4C 00 80 00 11. I also found this topic, where VSYS is only said to follow VBAT with a BATFET voltage drop: https://e2e.ti.com/support/power-management/f/196/t/729655 . Does the VSYS regulation need to be enabled somehow? Is this due to some design mistake or am I misunderstanding the datasheet?
Regards,
Krzysztof Kondratowicz
Firmwave
Part Number:TPS7H3301-SP
Hi Team, I have a customer that needs the ESD Rating for TPS7H3301-SP
Thank you in advance for your help
Part Number:UC2844
Hi team,
My customer is looking for the application note or TI-design for below spec. Please kindly help, thanks a lot!
Part Number:TPS54308
Hi
Could it be possible to construct inverting buck boost with TPS54308 to generate -12Vout/0.2A from 12Vin?
I'm referring following.
http://www.ti.com/lit/an/slva524/slva524.pdf
Please tell me if you can see concern.
BestRegards
Part Number:TPS65381A-Q1
Tool/software: Code Composer Studio
Dear E2E,
Recently, I have tried to initialize the TPS65381 register. But I found the SAFETY_FUNC_CFG register can not be written.The mcu I use is TMS570LS0714. It is so strange! Following is my test case:
(1) First, I have tried to write the values to SAFETY_ERR_PWM_H.
From above pictures, I think I have written the value to SAFETY_ERR_PWM_H. The value has been changed from 0xFFu to 0x0A. And this register can only be write in Diagnostic state and the write access is not locked.So I think spi communication and my test code is good.
(2) Then, I have tried to write the values to SAFETY_FUNC_CFG.
From above picture and test case 1, I think TPS is stay in diagnostic state and the write access is not locked. But I don't know why the SAFETY_FUNC_CFG can not be written. Is there any more limits in this register? What should I do if I want to write value to this register.
Maybe it is something wrong to my hardware. But when I test another two hardwares, the test result is the same.What do you think of these phonemenon? Or there is something wrong in my test code?
I am looking forward to your advice. Thanks!
Best Regard,
Yu Chen
Part Number:BQ35100
1- For the BQ35100, could you give me some information on the maximum current ( ICC_ACCU Max) that the device pulls when it is running in ACCUMULATION mode (GE=High and GaugeStart() received).
2- According to the datasheet, when the BQ35100 is used in the ACCUMULATOR mode, and GE =High, ICC_ACCU=130µA and when GE =LOW, ICC_ACCU=0.05µA. I would like to know where the rest of the current goes when GE=LOW.
Part Number:LP55231
Hello expert,
Customer wants to set LP55231 to let LED behavior is always bright white light. (about 4 seconds) during system power on. After system power on, EC will take over LP55231 to set following behavior on LP55231. May we know could we achieve it through LP55231 engine? And how to do it? Thanks a lot!
Best regards,
Ann Lien
Part Number:UCC24612
We are using DC-DC input full-bridge LLC, the output specification is 14V 150A, using high side Synchronous rectification , currently using two UCC24612 driver chips for high side flyback, a single chip drives four MOS (single MOS tube Ciss is about 10nF), Please help to confirm whether it is satisfied, what other information do you need ?
Part Number:UCC28064A
Hi Team:
Please help below question and Schematic & waveform as below, thanks.
1.What kind of condition , may cause PFC current noise as below waveform ?
2.What's problem cause PF drop on max load of 1.84
A ?
Ch1:Vbulk , Ch2:Vds_Q2 , Ch4:L6_PFC current
(Please visit the site to view this file)
Part Number:BQ25703A
Hi,
Need Clarification:
1) When Charger Status (I2C Addr = 21H/20H) register gets updated ?
2) Does CHRG_OK notifies HOST whenever USBC Charger inserted/removed ?
3) After Enabling Charging in ChargeOption1 (I2C Addr = 0H/1H) register, why should we periodically update WatchDog timer to continue Charging ?
4) When does Charger does "Charge Termination" ?
5) Does this chip supports "CE (Charge Enable/Disable)" feature ?
6) Implementation guide available ?
Thanks.
Part Number:LM10011
Hi,
I need to power the variable core supply CVDD of TMS320C6678 multicore processor. As a smart-reflex solution, I can opt for either an analog controller LM10011 or a digital controller UCD92xx-EP.
What are the pros and cons of LM10011 and UCD92xx-EP?
I'm not able to determine on what cases should I go with LM10011 and on what cases should I go with UCD92cc-EP for the CVDD rail.
Thanks,
Binayak
