TPS24720: MOSFET selection
Part Number:TPS24720Hi,I'm looking to use the TPS24720 in for a 12V hot swap circuit that i want to current limit at 20A. I know the demo board for this part uses 2x CSD16401Q5A FETs to provide a 12V,...
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TPS92691: Buck Boost LED drive voltage & current ripple
Part Number:TPS92691Hi We are using TPS92691 for LED back light driver of LCD display for below spec:Input spec: 8-36V. Currenlty we are testing with 12V inputOutput spec: 12.8V, 180mAObservation:...
View ArticleLM5032: LM5032
Part Number:LM5032Hello SirI want to design an interleaved (two switches in parallel) boost converter having specifications as follows :Input voltage : 210-310 VdcOutput Voltage : 400 Vdc fixedIout max...
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BQ24640: MOSFET Selection
Part Number:BQ24640Condition:Device: BQ24640VIN: 12VVOUT: 2.7VIcharge: 1A We used the FDD3642 to do the charge function with bq24640 for super cap application. However, the charge current is limited to...
View ArticleSoft-start time of LM317A
We have question about LM317AT/NOPB.Please tell us the time from voltage input to voltage output(Soft-start time).Vin=24VVout=3.3VIout :min :16.5mA type：18.6mA max ：19.8mA best...
View ArticleBQ24105: I need Ni-MH Charger.
Part Number:BQ24105Hi teamI found that BQ24105-Q1.www.ti.com/.../slua843.pdfThe above page is a Ni-MH charger solution.BQ24105-Q1 was used. This is expensive.I only need 600mAh, 2Cell 2.4V.Please...
View ArticleBQ40Z50-R2: FCC update at the end of discharge
Part Number:BQ40Z50-R2Hi,I am observing in our system log files the FCC of the battery pack is updating to very less value (like from 19Ah to 10 AH) at the end of discharging, and recovering back at...
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BQ24610: A question about the device operation flow chart？
Part Number:BQ24610Dear Sir when che charge go into the constant voltage mode ,in the next chart why turn off the charge? thanks®ards
View ArticleLM3481: Queries in application note of LM3481
Part Number:LM3481We are referring LM3481 application note for designing Non-Isolated Fly-back converter. For that we are going through the design formulas given in application note.In the application...
View ArticleBQSTUDIO: BQSTUDIO
Part Number:BQSTUDIOHi team*Store the settingI need to select registers to record log of watch at every time at lunching the bqStudio.If I could store these setting to some file. I could skip these...
View ArticleBQ24650: Layout questions - GND pin, Thermal Pad
Part Number:BQ24650Team,our customer would need help with bq24650 layout:"I have question about Battery Charger bg24650.I design new PCB with bq24650 and I'm trying to do the best layout. I read...
View ArticleBQ27426: BQ27426
Part Number:BQ27426HI * Data flashDoes bq24726 have a function to store the battery profile that are measured by Dallas ?If it is, does these stored in OTP or Ram memory ?If it is , which manual should...
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TPS3420: The two inputs are low while the output is still high
Part Number:TPS3420Hello,I've observed a strange behavior on my design.The TPS3420 is used as shown below :When the two inputs are low, sometimes it works and output becomes low, and sometimes output...
View ArticleTPS61194: Behavior when V_IN > V_OUT
Part Number:TPS61194Hello,This question applies to TPS61193 / TPS61194, configured as Boost converters.Circuit example #1:Output voltage is maximum 26.62V (3.66V*7 white LEDs in series per each string...
View ArticleTPS40040: TPS40040 inquire output spec 40A/2.8v
Part Number:TPS40040Dear,our want design Vin:3.8VVout:2.8VIout:40ATPS40040 it`s could be change MOSFET and inductor can meet output spec 40A/2.8VIf any suggestion, Please advise me.Thanks,Best...
View ArticleCCS/UCD3138A: FAULTMUX counter does not work properly
Part Number:UCD3138ATool/software: Code Composer StudioHi，I'm using fault mux module to realize protection function to shut off DPWM. however, I need protection works after a few DPWM periods. so I...
View ArticleUCD3138: PMP8877 and UCD3138
Part Number:UCD3138Please provide design files for the PMP887 1/8 brick.Do you also have calculations/simulations for the planar magnetic coils built into the design.Thank you.
View ArticleCompiler/UCD3138: UCD3138
Part Number:UCD3138Tool/software: TI C/C++ CompilerHi：I want to ask some quentions about UCD3138 DPWM master-slave mode.Suppose LLC topology. I configure DPWM0(Primary mos) as master, and DPWM1(SR mos)...
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LM74670-Q1: Vgs signal abnormal
Part Number:LM74670-Q1Hi,customer use LM74670-Q1 as full bridge rectifier, but they found the Vgs is abnormal and has noise on Vin. customer use 1uF as charge pump capacitor and use CSD18563Q5 as...
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TPS22953: Vout drop issue of TPS22953?
Part Number:TPS22953Dear Sir: We follow datasheet page 32 , Figure 63. to design our circuit as below picture, We have a issue as when U4 IN1 turn off and Vout have drop as below picture...
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