Forum Post: RE: Battery Charger Search
With 1.1A charge current and 6.5V max input voltage, you may want to consider to use DCDC charger as the power dissipation would be very high with linear charger (6.5V-4.2V)*1.1A > 2W.For DCDC...
View ArticleForum Post: TPS2492/3 temperature range
Dear Ladies and Gentlemen,I'd like to use TPS2493 device in a system I currently design.Ambient temperature can reach 80 degrees Celsius.I'm a little bit confused with working temperature range of this...
View ArticleForum Post: RE: BQ3055 battery management- Isolating GND
Hi Thomas,Thanks for your feedback.Could you please share information regarding sample SMBus test code (in C format) that is available for validating the BQ3055 as the EVM comes with PC software.
View ArticleForum Post: RE: UCC28950 - H Bridge function
I'd use the UCC25600 and make a LLC Resonant Converter. I achieved +97% efficiency at 500W.
View ArticleForum Post: Cannot write to extended registers in bq27425
Hi,I have a problem writing data to the extended registers. The data is not stored in RAM/NVS.What I want to do is to change BIE (bit 5) in the Operation Configuration Register. My code looks like this...
View ArticleForum Post: TPS2105 Problem
Hello,There is an application problem with TPS2105.customer: Delta (TW)application: Serve Motor's EncoderTPS2105 status: M/P since 2012Issue description:After burn-in the encoder board with 85degree,...
View ArticleForum Post: RE: switching frequency for UCC25600 LLC controller
I made a LLC with 97% efficiency at 500W output in a ETD39 core - the core got to 80C (too hot in most designs), but it worked.A little bit design changes could reduce my loss to 50% in the core. Make...
View ArticleForum Post: BQ20Z45-r1 Internal sensor initial accuracy
What is the initial accuracy of the internal temperature sensor offset. I cannot find this on the data sheet.
View ArticleForum Post: TPS23754 / 56 Active Clamp instability at maximum current /...
Hello,I have implemented a TPS23754 circuit according to SLUA593 and SLUA469 (Emi). The circuit is modified to perform 25W at 70 degress celsius, using auxillary input voltage as low as 18V. To lower...
View ArticleForum Post: TMDSSOLARCEXPKIT (Solar Explorer), cannot compile project...
Hi.I've been constructing MPPT simulating system using "concerto-based solar explorer".But, when I compile the project of solar cell P-V emulatopr("SolarExplorer_PVEmulator_F2802x"), it throws error...
View ArticleForum Post: UCC28810EVM-003 Start up delay
Hello,On testing UCC28810EVM-003(Universal AC input, max. 58.5VDC output, max. 500mA for each of 4-LED strings)I found that it has a noticeable delay(about half a second) at start up.Could someone...
View ArticleForum Post: RE: EV2300 on 64bit Windows 7
I cannot get this to work either on my Win 7 machine and get the E0000235 error as wellCould you send me the driver pleaseThanksPhil Crewe
View ArticleForum Post: bq24190 - Sharing D+/D- USB lines with host
Hello,The product I'm working on requires requires USB communication (handled by the host) while the battery is charging from USB VBUS.Can a host and a bq24190 share the USB D+/D- lines? If so, how?
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Forum Post: LP3982-Adj latches in dual power supply config with UCC384-Adj if...
I designed a dual power supply for +/-4V6 which is powered from +/-5V0. Here I use LP3982-Adj (pos) in combination with an UCC384-Adj (neg). +/-4V6 supplies a few OP-Amps, total current is about 15mA....
View ArticleForum Post: UCC28810 LED Driver - output voltage range modification of PMP5732
Hello,I want to modify output voltage range of PMP5732 from 25-36VDC to 33-39VDC.Could someone tell me the factors affecting output voltage range of UCC28810 based LED Driver so that I may finish my...
View ArticleForum Post: bq77910A
Dear TI support,The datasheet specifies for the ZEDE pin a strong pulldown. What is a strong pulldown? Is a pulldown value of 1k sufficient?What current does flow into this pin in programming mode and...
View ArticleForum Post: RE: Sergey Khobin
Input voltage after the transformer 50 Hz 20 V max. 10V min.For minimum input voltage transformer, at the input of the stabilizer, after capacitor,ripple voltage 100 Hz 8V maximum 4V minimum /Output...
View ArticleForum Post: RE: high voltage isolated DC/DC
Martin,There is probably a hundred different ways to do what you want. At that power level and voltage levels I would recommend a 2 switch flyback and using a UCC2897A but not in the active clamp...
View ArticleForum Post: Help locating PL536 EVM schematic
Greetings,I have scoured, searched, and googled for the PL536 EVM schematic without success. Please direct me towards a PL536 EVM schematic. Otherwise, these boards are useless to me.
View ArticleForum Post: RE: UCC2897 / Pulse skipped at high Vin and no load
Satoshi-san,I don't believe no load operation is touched on in the data sheet and if it is the converter they are using has sync rectifiers on the output which prevents the output voltage build up that...
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