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TPS53515: Frequency instability issue at Fsw=600KHz
Part Number: TPS53515Vin=12V, Vout=0.8V/8A application, Cin=44uF and Cout=350PF. The detail schematic as follows:When Fsw=600KHZ, the frequency isn't satble. The wave for SW point is in the below:But...
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UCD7138: Gate Driver output stage
Part Number: UCD7138The datasheet said the NOMS and voltage boost can help to deliver the highest source current when turning on the MOS. But I have confusion about this. Why do the NMOS in parallel...
View ArticleBQ35100: What mode does the Energizer L91 chemistry in bqStudio allow (SOH or...
Part Number: BQ35100The bqStudio seems to have the Energizer L91 chemistry available to program.if I program it into the bq35100, which of the SOH or EOS modes will work better with it?Regards
View ArticleUCC21520: Drive capabilities: External components: Bootstrap Diode, VDDA and...
Part Number: UCC21520I use the UCC21520 to drive an IGBT which has 4.4nF input capacitance, 10 Ohm Integrated Gate resistor.I used 7.5 to 10 ohm serial reistor to directly drive the IGBT gate. I...
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BQ24080: Deep discharge
Part Number:BQ24080The deep discharge of a LiPo batterypack with integrated PCM does not recover with the BQ24080, but instead shows strange sawtooth discharge behavior.We slowly discharged a LiPo...
View ArticleTPS53622: sequencing
Part Number: TPS53622Hi Team,As per application schematics, enable of power stage (CSD95496QVM) controlled by ASKIP# pin of TPS53622A. Is ASKIP and BSKIP pin able to control the power stages without...
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LM25119: Output Unstable
Part Number: LM25119Dear Team,The customer using LM25119 for 18V/120A application.They have 2 board with the same schematic, but slightly different layout.One board work properly till 100% load, but...
View ArticleLMZ14202: LMZ14202 conducted EMI
Part Number: LMZ14202Hi everyone,I am planning to use the LMZ14202 power supply in a new design. I found in the datasheet the radiated EMI test information but nothing about the conducted emission. Do...
View ArticleBQ25886: DCP mode
Part Number: BQ25886Hi Sir We have project use power jack 5Vin/3A to do 2cell boost charge ,So this project doesn't have USB D+/D-1. If I fix the voltage 2.8V on D+/D- ,BQ25886 can fix the input...
View ArticleTPS2552: The difference of load switch and Power Distribution Switches
Part Number: TPS2552Dears, Could you tell me the difference of load switch and Power Distribution Switches ? For example, load switch=TPS22919, Power distribution switches=TPS2552.I don't know...
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BQ51013: Testing prototype with Qi charging
Part Number: BQ51013We are testing a prototype we made using TI reference design docs for the BQ51013 Qi receiver. We followed a reference design from the SLUUA44A user's guide for the bq51013xEVM-764...
View ArticleBQ24314: What's the internal pull down resistor value of the /CE Pin.
Part Number: BQ24314Hi team,My customer wants to add a RC delay circuit on the /CE pin. But I noticed there is a internal pull down resistor on the /CE pin. So I just want to check with you what's the...
View ArticleDCP020515D: minimum load
Part Number: DCP020515DDear,- Is it necessary a minimum load in ref. DCP020515DU to have a good regulation?, what is ?- Can I use only one output (+Vout ) and -Vout is open circuit?Thank you in advance
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LM5023: LM5023 POWER SUPPLY, snubber Resistor heating,
Part Number: LM5023Hi,We are designing a LM5023 POWER SUPPLY, Here the snubber resistor is heating,Find the attached schematic.In schematic R3,R4 resistance value is 50K/2W, D2 is UF4007, Across R3,R4...
View ArticleTPS25982: Current limit under 2A
Part Number: TPS25982Hi team,My customer wants to set 0.8A to the current limit. Datasheet says the range of current limit is 2A - 15A in first page.Does this current limit work correctly? How much...
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LM5023: LM5023 POWER SUPPLY, Load regulation problem
Part Number: LM5023Part Number: LM5023Hi,We are designing a LM5023 POWER SUPPLY, Output voltage decreased when increasing LOAD.Find the below test results,When we applying Input voltage Above 210Vac...
View ArticleLM5069: LM5069EVAL
Part Number: LM5069I am trying to validate the functionality of the LM5069 chip using the evaluation board. I tested the board as is first, and reached the correct cutoff of 2.5A. I need a current...
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TPS543C20: Does tps543c20 support stack 4x for up to 160 A?
Part Number: TPS543C20If the slaves are set to 90 degrees, 180 degrees, 270 degrees, then direct SYNC, VSHARE and ISHARE between master and slaves.can work with stack 4x?
View ArticleBQ24232: Production Testing Virtual Battery
Part Number: BQ24232Hi,is it possible to build up a serious production testing set up for the battery charger? Like a virtual Battery ? I saw this as an Application Report SLVA618-October 2013, but...
View ArticleTPS23880: The BT channels of TPS23880 are independent of each other
Part Number: TPS23880Dear sir:Are the four BT channels of TPS23880 independent of each other? Why do I find that there are interactions?
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