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Compiler/TIDA-01604: Piccolo F280049 controlCARD

September 23, 2019, 2:30 pm
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Part Number: TIDA-01604

Tool/software: TI C/C++ Compiler

this is Jaeyup

Hello, I have some questions.

1.Debug through CCS on TIDA-01604 Control Card, but no PWM waveform comes out from MCU. I would like to know if there are separate conditions for the PWM waveform or if I need to use a different method.
(I randomly applied PWM directly to the gate driver TIDA-01605, and I confirmed that the gate driver operates normally.)

2. I debugged the PFC with Open Loop, but of course, the PWM waveform does not come out so the output does not come out properly. As a result of checking GuiVin through Watch Dog, the voltage value is continuously changed and it is switched to negative voltage and positive voltage. I want to know the reason.

Please reply as soon as possible.

Best regard

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WEBENCH® Tools/LMZ31710: How to set frequency in webench for LMZ31710?

September 23, 2019, 8:59 pm
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Part Number: LMZ31710

Tool/software: WEBENCH® Design Tools

When I try to set the LMZ31710 desired operating frequency (300KHz) for a 0.9V output, webench says "Design cannot be created". The data sheet says this should be okay. What gives?

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WEBENCH® Tools: JTAG technology

September 24, 2019, 12:50 am
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Tool/software: WEBENCH® Design Tools

Sir,

Could you please provide BSDL file  MSP430FR68791IPZR ?

Best regards,

Chaleomkiad

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Battery management system for (10s 4p) Li-ion battery pack

September 24, 2019, 12:59 am
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Hello,

I need to know which is better BMS FOR (10s 4p) Li-ion battery pack, Which is used for (36 V ,250 watt) DC motor in E-BIKE, I have already gone through TIDA-00449 .

Can you suggest me suitable BMS for this with CAN protocol or any other.

Regards,

Gowtham

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TIDA-00365: how to selcet zenar diode for motor line

September 24, 2019, 1:00 am
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Part Number: TIDA-00365

Dear expert:

Can you kindly find the design guideline please? Can you teach me how to select D4 of Figure6?

Is D4 also used to protect against motor Induced electromotive force？

Thanks!

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TIDA-03040: PGA400-Q1

September 24, 2019, 6:16 am
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Part Number: TIDA-03040

Hi TI team.

We are developing a a motor drive application where we want to use  TIDA-03040 .The required file for development could not be found on TI web.

Can you give me the files below?

• PGA400-Q1 GUI
• PGA400-Q1 coefficient calculations spreadsheet
• PGA400-Q1 signal chain spreadsheet
• PGA400-Q1 EEPROM memory MAP

e-mail address : 23194259@mahindra.com

Thanks.

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WEBENCH® Tools/BQ40Z50EVM-561: BQ40Z50EVM-561

September 24, 2019, 7:06 pm
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Part Number: BQ40Z50EVM-561

Tool/software: WEBENCH® Design Tools

Hello, engineer of TI:

I am now using BQ40Z50EVM, and the board is awakened by the wake button. Now I want to realize the short press on the board (such as 1 second) wake button, and only the LED shows the power (no wake up), and long press (such as 3 seconds) to realize the wake up boot function.How to configure or operate?

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WEBENCH® Tools/PMP20588: Ethernet (PoE) LED's

September 24, 2019, 10:49 pm
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Part Number: PMP20588

Tool/software: WEBENCH® Design Tools

Dear Sir/Madam,

We are using PMP20588 PoE, in that we need to Turn ON the RJ45 LAN connector LED's in according to PD detection and Data.

In that provision is there for PD detection,solution needed for data.

Please provide the Solution for this.

Thanks & Regards

Gangadhar P

Master PCB

Hyderabad

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PMP7672: Output Voltage Issue

September 25, 2019, 12:39 am
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Part Number: PMP7672

Hi!

I am designing a power supply using design reference of PMP 7672 .

But I have a doubt that I required output Voltage to be 75V and Current selection can be 60mA, 120mA, 240mA. and this is a Isolated Design for T8 Tube light.

But Excel sheet I downloaded for design parameter showing max no. of LEDs having 10 Nos with LED Forward Voltage of 3V. 

Can I Design 18W with this reference Circuit or IC having issue for Isolated Design for 75V output voltage?

Please Guide...

Also can it will be possible to achieve THD<15% and PF> 0.9 for this design please suggest.

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TIDA-01623: Vout Value

September 25, 2019, 5:26 am
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Part Number: TIDA-01623

Hi Team, We would like to seek your help regarding this matter.

Our customer wants to remove the USB Type C part of the design, he wants to know the values of Vo on the schematic.

Thank you very much. 

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WEBENCH® Tools/BQ21040: BQ21040

September 25, 2019, 8:16 am
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Part Number: BQ21040

Tool/software: WEBENCH® Design Tools

I use a battery with a 18650 lithium battery and no temperature sensing pins.
Is it appropriate to use the BQ21040 as a charger?
The temperature sensor function of the BQ21040 is not used.

If this feature is not needed, a fixed 10kΩ can be placed between TS and VSS to allow normal operation.

IS there possible  i placebetween TS and VSS to allow normal operation. then without 10kΩ thermistor?

http://www.ti.com/cn/lit/ds/symlink/bq21040.pdf  P14

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TIDA-020011: board availability

September 25, 2019, 12:13 pm
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Part Number: TIDA-020011

Team, 

Do we have a TIDA-020011 loan board for my customer to test?

Thanks

Viktorija

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TIDA-00449: BQ76930 Calibration

September 25, 2019, 12:50 pm
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Part Number: TIDA-00449

Hello,

1.  Is it possible to calibrate the values for BQ76930  from MSP430G2553  through SBW protocol?,

     or need to use EV2400 adapter  to calibrate the values for BQ76930 by I2C protocol.

2. Please,share the user guide to program MSP430G2553  using MSP programmer and debugger kit { http://www.ti.com/tool/MSP-FET?jktype=soc } in TIDA-00449  for on board programming.

    i have seen the MSP430 launch pad document but am seeking for alternate solution.

Regards,

Gowtham

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WEBENCH® Tools/LMR23625: Cff suggestion value

September 25, 2019, 4:23 pm
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Part Number: LMR23625

Tool/software: WEBENCH® Design Tools

Hello experts,

I have question for Cff value of LMR23625 based power supply.
In WEBENCH, I designed power supply in the condition as below;
Input : DC8V-31.5V
Output 5V, 2.1A
At this condition, Cff is suggested 10pF.
But if I followed datasheet calculation (formula 17 and 18), the value will be 25pF.
There is difference between two suggestion.
Which value should I follow better?
Thanks and best regards,
Ryo Akashi
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TIDA-01093: Part number of F1 fuse in TIDA-01093

September 25, 2019, 9:08 pm
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Part Number: TIDA-01093

Dear All,

In TIDA-01093 please provide me part number of Fuse F1 as it is DNP but it is required in layout design.

Also it is not mention in BOM please check it.

Waiting for earliest reply,

Best regards,

Prathamesh Patil

Battrixx 

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WEBENCH® Tools/UCC28C45: DCDC-Flyback-Converter: Webench creates CUSTOM transformer which cannot be bought

September 25, 2019, 10:45 pm
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Part Number: UCC28C45

Tool/software: WEBENCH® Design Tools

Hi Forum,

I have run an Webench design for DCDC 24V, 2,5A flyback and I got out a design with a customized transformer which has values that I cannot take an off-the-shelf transformer easily.
The Webench output transformer has the following values: Lp = 17.44µH, Rp = 870 mOhms, Leakage_L = 358.885 nH,  Ns1to Np = 1.269, Rs1 = 8.6 mOhms, Ns2toNp = 0.62, Rs2 = 700.0 µH.

Because this is not an off-the-shelf transformer, I cannot buy it from a listed manufacturer portfolio or a distributor. So I gave these data to a transformer manufacturer to ask them how to deal with them. They called back and said, that they can't deal with those values. And over that, we won't have a component need of several thousands of transformers, so a custom made one would get pretty expensive.

My question is what would you recommend to take as transformer? How to align it with data of a real transformer datasheet?
And overall: Why does Webench not create a circuit with existing - buyable - components like fixed transformers listed by Wuerth, Pulse, Coilcraft etc. and takes the chip and other fixed data and places the other more flexible components like C's and R's, transistors etc. dependent to them?

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TIDA-01632: TIDA-01632

September 26, 2019, 1:37 am
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Part Number: TIDA-01632

Dear TI partners：

         Could  we use the 24MHz  and 32.768KHz crystals  just meet the description of reference BOM, is there any other to take care if we use other vendors' devices?

                24MHz crystal reference :  TSX-3225 24.0000MF20G-AC3 Epson Crystal, 24 MHz, 9 pF, SMD

                32.768KHz crystal reference : ST3215SB32768C0HSZA1 Kyocera Crystal, 32.768 KHz, 20 ppm, SMD.

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WEBENCH® Tools: Not able to build Processor SDK 3.06 version for TDA2xx

September 26, 2019, 3:26 am
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Tool/software: WEBENCH® Design Tools

Hi,

I am trying to build Processor SDK 3.06 for TDA2xx. But its getting failed in gmake -s -j .

# Linking into E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/vision_sdk/bin/tda2xx-evm/vision_sdk_ipu1_1_debug.xem4...
#

undefined first referenced
symbol in file
--------- ----------------
NDK_accept E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
NDK_bind E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
NDK_listen E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
NDK_recv E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
NDK_send E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
NDK_setsockopt E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
NDK_socket E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
fdClose E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
fdCloseSession E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
fdOpenSession E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
fdPoll E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<network_api.oem4>
mmZeroInit E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/lib/tda2xx-evm/ipu1_1/debug/utils_common.aem4<ndk_nsp_hooks.oem4>

error: unresolved symbols remain
error: errors encountered during linking;
"E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/vision_sdk/bin/tda2
xx-evm/vision_sdk_ipu1_1_debug.xem4" not built
gmake[7]: *** [E:/NEW_SDK/vision_sdk/binaries/apps/tda2xx_evm_bios_all/vision_sdk/bin/tda2xx-evm/vision_sdk_ipu1_1_debug.xem4] Error 1
gmake[6]: *** [ipu1_1] Error 2
gmake[5]: *** [apps_ipu1_1] Error 2
gmake[4]: *** [apps] Error 2
gmake[3]: *** [apps] Error 2
gmake[2]: *** [apps_exe] Error 2
gmake[1]: *** [apps] Error 2
gmake: *** [vision_sdk] Error 2

 please have a look and suggest.

Thanks,

Mona Shree.

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TIDA-010054: MOSFET current calculation concern.

September 26, 2019, 6:24 am
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Part Number: TIDA-010054

Hello Team,

I'm using the Design Guide: TIDA-010054 to complete some analysis. 

I have a concern with the parametre "t.zero" in the equation 20, i didn't get its meaning and how to calculate it ? 

in some other calcualtions, "Eq18 and 19" i use the same input data as you but i didn't get the same result ! ?

Thanks in advance.

Best regards.

Rachid 

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TIDA-00961: Question about connections to L102 and L103, and ZVS circuit operation.

September 26, 2019, 5:06 pm
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Part Number: TIDA-00961

I am having problems with the ZVS circuits

I see that Pin 2 of L102 is labeled AUX2A and is connected to C219 of ZVS circuit.

Pin 4 of L102 is labeled AUX2B and is connected to D211

Pin 2 of L103 is labeled AUX1B and is connected to D205

Pin 4 of L103 is labeled AUX1A and is connected to C203 of ZVS circuit.

This difference causes the signal into ZVS circuit, for L102 ( AUX2A ), to be out of phase with SWNODE2
and produces two pulses from ZCD_Comp2. One at rising edge of SWNODE2 and one at falling edge of SWNODE2.

See attached waveforms

This difference causes the signal into ZVS circuit, for L103 ( AUX1A ), to be in phase with SWNODE1
and produces one pulses from ZCD_Comp1, at rising edge of SWNODE1.

See attached waveforms

Are one of these signal pairs switched? If so Which one?
Are these waveforms correct?

Also do not see any blank signal.

Thank You for your help

Wayne Grandner

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