Part Number:LM5025A
The input is 24Vdc while ouput is 200Vdc/0.2A.
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LM5025A: Is it possible to use LM5025A in Boost-Flyback topology?
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LM5022: LM5022 (PMP20497) OCP Adjust
Part Number:LM5022
Dear Sir/Ms.
My customers refer to the PMP20497 to design their products but now find the problems to trigger OCP.
www.ti.com/.../PMP20497
Customer specifications
Vin: 12V~56V
Vout: 55.5V/1A (system load 0A~0.6A)
The customer has sent us the PCB and circuit diagrams, and I can't touch the OCP with CT and R14. I see that the voltage of R12-R13 from the oscilloscope is 168mV.
Can you guide us how to adjust the parameters of OCP?
If you want customer's circuit diagram and other information, please email me. If you have a MathCAD (R14, R15) file, please email me.
Best Regards,
Kami Huang
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UCC28070: Whether UCC28070 must be used with the gate driver circuit，such as UCC273XX
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LM3481: Input voltage 24Vdc and output 200Vdc/0.2A boost-flyback
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PTH04T240F: Eval Board availability
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CCS/EMB1428Q: how to resolve fault code 0b1001
Part Number:EMB1428Q
Tool/software: Code Composer Studio
hello! everybody.
I have disigned an active balance system according ti_00817,connect to 14 Li-cell using two emb1428 and one emb1499.the cell is no. 0,1,2...13 according the posiiton of gnd.I find only no. 0,1,2,3 cell can do active balance.no.4,5,6...13 can not do active balance,the fault code is first 0b0001(primary current limit),after some seconds the fualt code is 0b1001(CS falling edge while slew is low or the EMB1428 is waiting for it to go high).I have work hard to resolve this problem.but I have no go well in three week.anyone can help me,why do the fault occur? thank you very much!
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LM5141: About the proper value of the capacitor value of frequency dithering
Part Number:LM5141
Hi,
I'm thinking of using the LM5141 device.
Among them, I would like to ask you about the setting of frequency dithering.
There is a formula to calculate CDITH in item 7.3.5 of the data sheet.
I think that FMOD indicates the fluctuation period of the variation.
Is there a proper value for this FMOD?
In EVM, CDITH = 0.01uF, which is calculated to be 8.33kHz.
How did you decide this value? Please let me know if there is a standard to determine the value.
(specification)
VIN : 24V
VOUT : 12V
IOUT : 0.1Atyp, 3Amax
Fs: 2MHz
Among them, I would like to ask you about the setting of frequency dithering.
There is a formula to calculate CDITH in item 7.3.5 of the data sheet.
I think that FMOD indicates the fluctuation period of the variation.
Is there a proper value for this FMOD?
In EVM, CDITH = 0.01uF, which is calculated to be 8.33kHz.
How did you decide this value? Please let me know if there is a standard to determine the value.
(specification)
VIN : 24V
VOUT : 12V
IOUT : 0.1Atyp, 3Amax
Fs: 2MHz
Best regards,
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TPS51200A-Q1: What is the difference between TPS51200-Q1 and TPS51200A-Q1?
Part Number:TPS51200A-Q1
Hi team,
Could you advise what is the difference between TPS51200-Q1 and TPS51200A-Q1?
regards,
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CCS/EMB1428Q: how to resolve fault code 0b1001
Part Number:EMB1428Q
Tool/software: Code Composer Studio
hello! everybody.
I have disigned an active balance system according ti_00817,connect to 14 Li-cell using two emb1428 and one emb1499.the cell is no. 0,1,2...13 according the posiiton of gnd.I find only no. 0,1,2,3 cell can do active balance.no.4,5,6...13 can not do active balance,the fault code is first 0b0001(primary current limit),after some seconds the fualt code is 0b1001(CS falling edge while slew is low or the EMB1428 is waiting for it to go high).I have work hard to resolve this problem.but I have no go well in three week.anyone can help me,why do the fault occur? thank you very much!
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LP8860-Q1: About End-of-Line Programming
Part Number:LP8860-Q1
Hi All
I saw SNVA797.
(http://www.tij.co.jp/jp/lit/an/snva797/snva797.pdf)
In the case where EEPROM can be written at customer's factory.
Is there no problem choosing which version ?
Will writing time be shorter if I choose a similar version ?
Best Regards,
Koji Hayashi.
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TPS55010: Should customer change the layout if customer use passive components on COMP pin?
Part Number:TPS55010
Hi, Team.
could you tell me whether should customer change the layout if customer use passive components on COMP pin?
since the layout from tps55010 datasheet doesn't show Cc,Rc,Chf so that customer doesn't know how should they make the layout with Cc,Rc,Chf.
could you tell me should they change or just follow the datasheet?
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LP8860-Q1: Register writable start time
Part Number:LP8860-Q1
Hi All,
When can I write the register ?
From BOOST START ?
(For example, Initial Boost Voltage of Ver.B is 24V, but I want to change it to 27V.)
Also, does the write timing change with 0x60-78 and 0x00-0D ?
Best Regards,
Koji Hayashi
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TPS63020: Boot-up resonate issue?
Part Number:TPS63020
Hi Support,
Issue:
- When input VBAT > 3.7V, the output is okay at 3.8V. Then reduce the VBAT to 3.2V, it’s still working. -> OKAY
- When input VBAT < 3.6V, let’s say VBAT = 3.4V, the output is about 1.8V -> NOKY
Please advise.
Thanks.
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BQ25895: VBUS_GD, PG_STAT, VBUS_STAT registers
Part Number:BQ25895
Hi,
I wonder what's the sequence when these registers are changed when I plug an adaptor.
What I know from the datasheet is:
1. when pass the "Poor Source Qualification" VBUS_GD will be set.
2. and then when "Input Source Type Detection" is done, PG_STAT is set.
Is VBUS_GD is always set before PG_STAT bit is set?
Is VBUS_STAT changed simultaneously with PG_STAT?
Then should I use VBUS_GD bit or PG_STAT to determine if adaptor is inserted?
Is it possible that VBUS_GD is 1, but VBUS_STAT is 000?
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BQ34Z100-G1: BQ34Z100-G1 program failure
Part Number:BQ34Z100-G1
Dear All:
If i use the EV2400 to program the BQ34Z100-G1 failure then the EV2400 can't connect the BQ34Z100-G1 . why cause the result？
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TPS63060: request to measure PHASE MARGIN of TPS63060DSCT
Part Number:TPS63060
Dear Sir,
could you help measure PHASE MARGIN of TPS63060DSCT as below condition.
- Input: Voltage: 3.6V~4.2V
- Output: voltage: 3.3V
- Current: 200mA~300mA
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BQ25895M: BQ25895M & D+ D- & MCU
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LT1054: What's the tolerance of Vout?
Part Number:LT1054
Hi engineers,
I have question on Vout tolerance.
I saw the Vout max to be -15V on product page.
But it shows Vout max -5.2V in the datasheet.
Which spec is correct?
Thanks.
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UCC28740EVM-525: Inquire UCC28740EVM-525 transformer(T1) design reference tool and detail spec
Part Number:UCC28740EVM-525
Hi Sir,
Is that possible that you can share UCC28740EVM-525 transformer(T1) design reference tool and detail spec for our reference?
Thank you for your kindly help.
Edward Chen
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TPS51200-Q1: Purpose of the pins on the package side
Part Number:TPS51200-Q1
Hi team,
I would like to know the purpose of the side pins connected to the thermal pad below.
Is this for visual inspection of the solder assembly or is it mainly for the mechanical purpose for better solderbility?
regards,
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