Forum Post: RE: UCC27201 problem
Hi Tan, did you get the issue fixed? What was the critical solution, freewheeling, snubber, or ? I ran into the exact same issue. Having a through-hole prototype board, my biggest concern is relatively...
View ArticleForum Post: RE: LM22676 excess voltage ripple
I would probably order a couple of EVMs and use those to get your circuits up and running. In general these types of switching regulators do not work well when wired in a "point to point" style...
View ArticleForum Post: RE: BQ3060 Current and Temperature Calibration
BjornThe CC Current and Temp Signal parameters are configuration parameters and are not updated during calibration. The calibration routine uses these as default parameters for certain parts of the...
View ArticleForum Post: RE: bq34z100 Current Calibration
PhilThis document provides more detail on calibrating this series of devices from the host. SLUA640RegardsTom
View ArticleForum Post: RE: Multi-Battery LiPo Monitoring and Charging
Sam,These devices should work well for your applications. You may want to consider using the bq20z65 instead of the bq20z95, since it is a newer generation device. What would be the purpose of using a...
View ArticleForum Post: BQ24133: Why no system battery tap option for 2 cells?
Hi,BQ24133 datasheet figure 2 shows system being powered from battery through sense resistor from driven side. Datasheet also says:"For 1 cell applications, if the battery is not removable, the system...
View ArticleForum Post: RE: LI-ION CHARGER
See attached updated requirements (page #2) and advise(Please visit the site to view this file)
View ArticleForum Post: RE: How to read out the Data Flash of BQ3060
Hey Thomas,thank you very much for your reply. What I would like to do is to change the default values in the operation Cfg A (Table C-156), because my system needs different values for example:Write...
View ArticleForum Post: RE: Open Cell fault after assembly
Dear WM5295,thank you very much,assembling with a link of CHGst to the GND and removing it after programing solved this issue.can you answer my question about, in what other conditions, should I expect...
View ArticleForum Post: RE: Current Fed Full-Bridge Isolated Boost Converter / Current...
Thx for the fast reply and useful feedback.I'm currently building a prototype and i'll let you know if and how well it works.
View ArticleForum Post: RE: bq24715 documents required
Me, too, would like to get BQ24715 data so I can design with it.The request email in the preview web available datasheet gets rejected as follows:The message you sent to the mailing list...
View ArticleForum Post: RE: Bq34z100 Control and Block commands
Chidube, Are you referring to the Control() Subcommands on the bq34z1xx devices? If so, I have an e2e posting that goes through a couple of examples as to how to use them....
View ArticleForum Post: PTN78020W module size detail
In datasheet P.25, there is the module size information.Could you give me more detail?I want to know the following informations,-each size tolerance.-size of attached file "2" and "3" point. (between...
View ArticleForum Post: RE: BQ24133: Why no system battery tap option for 2 cells?
I agree with you. I really see no differences between 1 cell and two cells.The basic difference between using the battery FET and not is the isolation. If the battery FET is not used and the battery...
View ArticleForum Post: RE: [BQ24166] increase the Safety timer duration by 2x
To what is your charge current set? If it is set higher than you would normally get with input current limit = 100mA, then2. The input current needed for the fast charge current is limited by the...
View ArticleForum Post: Identifying unlabelled chips in BQ500410A reference application...
I've been looking at the diagram on page 23 for the BQ500410A's datasheet here and can't figure out what chip IDs correspond to U19 and as well for the diodes in Q13. Other chips on the board have...
View ArticleForum Post: RE: TPS23750 NOISE PROBLEMS
Schematic really isn't legible.VAUX is supposed to be 10V when not over-ridden (pulled higher) by the converter - please see the Electrical Characteristics table. This contradicts the over-voltage...
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Forum Post: LM3150 DCDC 12Vin - 3.3Vout 8A, oscillation in SW pin
Hi,We have implemented a webbench design, based on LM3150.It's a 12Vin, nominal, to 3.3Vout 8 A.It powers a highly capacitive load (8x 680uF tantalum capacitors)When I look at the voltage at pin SW,...
View ArticleForum Post: RE: TPS542941 SW pin abnormality
During over current protection, the IC may switch during the initial onset with valley current detection. As the load current is greater than the current limit, the output voltage will start to fall....
View ArticleForum Post: RE: bq24640 vs bq24650
hi how much current can bq24650 take? just 2 A? can it go to 10 A ?
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