Part Number: LM5145
Hi,
Is there upper restriction of Css or Soft-start time ?
Best Regards,
Kuramochi
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LM5145: Css, Soft-Start time
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TPS40210: Calculation of reset time after OC protection
Part Number: TPS40210
Hi Sir/Madam,
I would like to know how to calculate the rest time after OC is triggered.
According to the datasheet, can I use equation (4)~(6) to calculate?
Because the calculation value doesn't meet the measurement value.
Please give some suggestions. Thank you very much. Have a nice day.
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Capacitor of TPS23753A
We have a question about circuit of TPS23753AEVM.
We need to choice the capacitor of C21 in EVM user's guide p.4 figure 1.
http://www.ti.com/jp/lit/ug/slvu314f/slvu314f.pdf
Can we use this capacitor for C21.
GRM033R61C333KE84
https://psearch.en.murata.com/capacitor/product/GRM033R61C333KE84%23.html
GRM155R71C473KA01
https://psearch.en.murata.com/capacitor/product/GRM155R71C473KA01%23.html
Which capacitor do you recommend?
Best regards,
Takahiro Nishizawa
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Performance of the Push-Pull LLC Resonant and PWM ZVS Full Bridge Topologies
Hi TI Team
I have a case/project design a power converter.
The input voltage is 48V fixed, the output is adjustable and the maximum voltage is 60V, the maximum current is 20A, and the maximum power is 200W.
I'm thinking could I design a converter Push-Pull LLC (primary) Resonant and PWM ZVS Full-Bridge (secondary)Topologies.
This thesis focuses on the study and implementation of an
interleaved series resonant converter (SRC) with a secondary-side
resonant tank. The conventional half-bridge SRC is not suitable for low input voltage
and high output voltage applications.
I sought some literature.
https://scialert.net/fulltext/?doi=jas.2011.2744.2753
http://asokatechnologies.in/tag/push-pull-converter/
Do you have any control IC could achieve this application??
Thanks
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UCC28056: UCC28056 PF and THD
Part Number: UCC28056
1,The PFC chip part, small package really is a good idea, this single-winding control chip, we have a similar other vendor material, have a certain sacrifice to the PF value and THD, I see the DEMO scheme data posted on the TI network, The PF and THD test curves are also weird, unlike the other chip data we used to use, this doesn't know why, can you help me explain it?
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PTN78020W: 3D Model
Part Number: PTN78020W
Hi Team,
My customer is looking for the 3D model of PTN78020WAH, can you share this file to us? I've read an internal thread that and the 3D model was re;eased offline.
Looking forward to your help.
Regards,
Renan
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TPS53626: TI VR14 solution
Part Number: TPS53626
Hi Sir,
Does TI have VR14 solution can be share for me?
Our customer survey this application now.
Hugo
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It is urgent to recommend a charging chip for five batteries in series charging.
It is urgent to recommend a charging chip for five batteries in series charging. The battery type is lithium ion or LiFePO4, with power path and charging current of more than 3A. Now LTC 4162 is used, but the test performance is poor. Please recommend a charging chip instead of LTC 4162.
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BQ24450: BQ24450
Part Number: BQ24450
Can BQ24450 Charge Lithium Ion Batteries and LiFePO4 Batteries?
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UCC21520: Please recommend iso gate driver which support UVLO 3V
Part Number: UCC21520
Hi Experts,
I was looking for a isolated gate driver with 3V UVLO,please recommend us some suitable parts.
if not ,pelase tell us if the UVLO 5V can handle OVP Supply voltage 7V ,thanks.
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TPIC7218-Q1: Hi, Whether TI has new product besides TPIC7218-Q1
Part Number: TPIC7218-Q1
Hi,
Is there any new device to replace TPIC7218-Q1?
Lemon
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UCC28722: about PSpice Model
Part Number: UCC28722
Hello E2E,
I tried import to TINA-TI the PSpice model of UCC28722. However I could not import it. Apparently the file has a problem with Line-10. Does TI have any information about PSpice model modifications for import to TINA-TI?
Regards,
ACGUY
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BQ24296M: Disable BQ24296M
Part Number: BQ24296M
Dear all:
Please help confirm how to disable BQ24296M, CE PIN only is disable charge funcation. thnak you!
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TPS61165: The way to turn off LED cmpletely
Part Number: TPS61165
In the above thread, I learned to use a Shottky diode to turn off the LED completely. My understanding is that the total VF increases when shottkey dioe is put in forword direction of LED current and I can stop the weak current when the total VF is bigger than VIN. Is it right? Or does it say other usage of shottkey diode?
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BQ40Z60: PACK Voltage in DAStatus1 (0x0071) is actually ACP Voltage (sluua04d.pdf)
Part Number: BQ40Z60
Hi,
Just wanted to report that there's an error in the sluua04d.pdf.
Section 11.1.51 on page 126 is stated that PACK Voltage can be read at bytes 10 and 11 of that MAC command.
On the actual chip, however, the voltage on the ACP Pin is reported.
Found that more or less "accidentally" while i was trying to get the ACP Voltage (and was really happy to find that :) )
Best regards
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BQ24160: the definition of weak source
Part Number: BQ24160
Dear team,
My customer found a power supply have charging issue and charger would show “weak source”, however, no definition for “weak” source in datasheet, could you help clarify this definition? Thank you.
Best Regards,
Polly Chung
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BQ27Z561-R1: Lifetime Data Block 1
Hello team,
There is no format description of Lifetime Data Block 1. Could you please provide? Customer want to read this block.
Thanks,
Miranda
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LP8860-Q1: Internal temperature sensor Accuracy
Part Number: LP8860-Q1
Hi,
Currently, we are planning to use the LP8860's internal temp sensor to monitor the board temperature. I've tried to find the accuracy of internal temp sensor on the datasheet but seems it's not given.
- Could you please provide the characteristics of the Sensor?
- Is there any way to read the external temperature sensor value over I2C as well?
Thanks
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LMZ31530: Vout Calculate
Part Number: LMZ31530
Dear Team,
If my customer use this module for 0.88V, how to calculate it?
Do we have equation for it?
BR
Kevin
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TPS7A47: High Voltage Floating LDO Operation
Part Number: TPS7A47
I'd like to use a low noise LDO (like the TPS7A47) as a sub-regulator for a high-voltage >200V audio tube supply. The High Voltage is generated by a boost converter. The goal of the LDO would be to reduce the amount of HF switching noise presented to the tubes. Obviously, the TPS7A47 can't directly regulate 200+ volts, so is there a known solution for floating the regulator in order to access it's ability to lower high frequency noise?
One idea I've been considering is using a zener diode (~20V) to drop the HV and provide a suitable reference for the LDO. The anode of the zener (180V) would be connected to the ground pins of the regulator. Input voltage would be the 200V output of the boost regulator. LDO would be configured for 18V, and output of the LDO (referenced to ground) would be the zener anode voltage + the LDO regulated output (198V).
I understand that the zener DC voltage may not be that consistent, but for my application, absolute DC value is much less critical than AC/HF noise.
I've attached a sketch of this idea. Any insight into if this will work or not? If not, any other ideas for high voltage low noise linear regulation? Output currents are quite low, voltages no higher than 300V.
Thanks
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