Forum Post: RE: P-Channel 4 terminal Mosfet with Body
Hello Brett Thank you for the quick response. The P-Mosfet is intended to be used at the load side of multiple outputs boost converter. (assume 2 outputs here)Each output of the Boost converter has a...
View ArticleForum Post: RE: LM22670 adequate for Conversion +5V - -3.3V, 2A ?
Hi Christian,We don't have reference designs for +5V to -3.3V. For your first case, 12Vin to -3.3Vout, Imax of 2.25A should be possible without any issue based on the reference design. Take note that...
View ArticleForum Post: RE: Symmetric 5v from symmetric 30v supply
Hi David,We filled in a few unlabeled component values on the previous schematic. (Please visit the site to view this file)This topology is a buck with an over-winding. Additionally we've placed a...
View ArticleForum Post: RE: Regarding TPS27082's on/off operation
Yes, it seems that CD4013 should be able to control the ON/OFF pin. With R9 removed, connect ON/OFF to VIN (< 8V) to see if U6 works.BTW, is U1 pin 14 connected on your board (I don't see a...
View ArticleForum Post: RE: dcdc converter.
Hi Padmanabhan,Attached is the schematic for your application. (Please visit the site to view this file) We haven't built a board to test whether the ripple is 5mV. But this should provide a very good...
View ArticleForum Post: RE: dcdc converter.
Goodmorning and thankyou sir.I will start assembly and testing of the converter. In the mean time i have a few clarifications.1.values for Rfbb, and R fbt, Rt, snubber for output diode.2. i have not...
View ArticleForum Post: RE: BQ29200 CELL BALANCING QUESTION
Hi Onyx, Thanks for your replies. Could you respond to this one as well:In the data sheet there is a specification for Iin for the VCx pins. For VC1 it seems to be negligible. VC2 however is 2.5uA...
View ArticleForum Post: RE: boost converter in DCM
i already send my contact information. i use breadboard just for early simulation. if my circuit ok i will proceed to make circuit to UV board
View ArticleForum Post: RE: tps61165
Hello,Did the flickering stop?In you diagram, remove the diode and connect Pin 2 and 6 inbetween R6 and C3. Change R6 to a Pot so that you can adjust the frequency.You may want to look at one of the...
View ArticleForum Post: why bq24170evm-610-15v can't charge for 1cell battery?
Something has happended when i use the module "bq24170evm-610-15v" and it can't charge for 1 cell Li battery.Following is the process:According to the page 6-7 of the book SLUU463-2010,i have...
View ArticleForum Post: RE: Solar Micro-inverter solution
Greenja,I am aware of what people would need to do to give me recommendations on my own project, but what about those who have already used particular parts in related (or even unrelated) projects and...
View ArticleForum Post: 110~285VAC to 9VDC 2000mA LED power supply.
Hi,Which driver IC should I use for my LED light? Following are the parameters of power input and output.Input voltage 110~285VACsingle output 9VDC, 2000mA [2x3 LEDs of 1watt each]Thanks.Bhavesh. Nasik.
View ArticleForum Post: RE: lm5576 dc dc converter
I do not see that exact part number anywhere, but LM5576 is a non-synchronous buck regulator with integrated high side switching FET. You do have to place external components for such as input bypass...
View ArticleForum Post: ucc38c42 or uc3842
Hi All,Can I change the UCC38C42 (original from Fuji FA13842) to UC3842?Please answer me a.s.a.p!Thx. Imre
View ArticleForum Post: RE: Symmetric 5v from symmetric 30v supply
My idea of putting a diode after the inductor on the positive side is not only much simpler but also evens out the voltage on the negative side by applying the same v drop on the positive side allowing...
View ArticleForum Post: Input VBUS voltage, OVP maximum rating
Hi everybody,I just bought two bq24210 IC for my new project, a wireless sensor powered by a solar panel with a backup battery. My problem is that I got confuse between the the VBUS volatge range...
View ArticleForum Post: RE: LM3433 Evaluation Board - Not Working
Hello Jebin,Have you tried using a different power supply? What is the output of the power supply during your test conditions?Thanks,
View ArticleForum Post: RE: BQ24079T - Overdischarge Protection Voltage
hello tahar,In our case the protection on the battery is open (overdischarge). so the BAT voltage is below VLOWV. according to your description this would mean that the charger chip would apply a...
View ArticleForum Post: RE: TPS40200 SS pin Voltage
Hi, AnthonyIt seems to be I have got a problem of OC error, but I have already disabled the current limit function. And I have test the voltage on the Vss pin, it reachs 8V when the load is light....
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