Forum Post: RE: TPS2501 Rilim resistor is not functioning and power up...
"First, Rilimthe Rilim resistor is not functioning and we don’t understand why. We’re using a 121K ohm resistor, which calculates to an iosmin of 150mA and iosmax of 319mA. Yet we pull 450mA and it...
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Forum Post: RE: Simple lipo charger
By the way, if I used the bq24060/64 , could I just ignore the Power Good pin, and wire it as shown? [quote user="Jeff Binns"]Hi there, I'm a newbie to electronics. I'm looking at getting a pcb made up...
View ArticleForum Post: I2C LED driver TLC59108
Hello,Thank you in advance for any help offered. I am working with a software engineer who will help this end, but am currently am stuck for solutions.Our circuit consists of 3x TLC59108 devices in a...
View ArticleForum Post: Testing TPS62621
I have designed a Power Supply Unit that feeds to MSP430F5438A and PAN1326 module from a 12V supply.For 3.3V - TPS62172 is usedFor 1.8V - TPS62621 is usedThe input to TPS62621 is given from the 3.3V...
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Forum Post: TLC59711
Hi!I build up a test circuit with the LED-Treiber tlc59711 and four SMD LEDS from CREE. They are powered by 3 AA batteries with 1.5 V per each.Now I have got some problems in the behaviour of theLEDs....
View ArticleForum Post: RE: Detecting device being charged has been unplugged using TPS2511
(1) Regarding your solution, not clear how to work, but regarding TPS2511, please note that it integrate 3 modes (divider 2, 1.2V on D+/D- and shorted mode), default mode is divider 2, when plug in...
View ArticleForum Post: sin wave freq divider
HiI am not sure I post it in the right forum but if not please tell me whree to publish it and I will move it.I have ~10KHz sin wave amp 2V that I want to convert into 10Hz sin wave on load of...
View ArticleForum Post: RE: TPS61251 problem in 100% duty cycle mode
No, (I'm using in the lab a power supply).The 12Hz is seen while the RF is not operating.In any case when working in BOOST mode (like when Vin is 2.5v) I don't see the low frequency noise.
View ArticleForum Post: RE: LM5119
I got the below aditional question:I have another technical issue regarding the LM5119:In my design I have an auxiliary 8.8V which is always valid (even before the LM5119 turns on).I'm using this...
View ArticleForum Post: RE: bq34z100 with chemistry ID 0162
Information about the chemistry contained in the region, which is copied to the file SENC.To clone the chip - read and save new file SENC then load file to new chip.After cloning recommend run calibrate.
View ArticleForum Post: RE: TLC59116 Global Dimming (GRPPWM) problem
I was able to get the TLC59116 (not TLC59116F) working on my board, using the same code as posted above. It dimmed as programmed using the code above, using GRPPWM. I am seeing the "erratic flashing"...
View ArticleForum Post: RE: Spice and Tina averaging models
I've been looking at so many equations based on a freewheeling architecture, I forgot it was synchronous! Thanks,Matt
View ArticleForum Post: RE: Receiver for Powermat and Qi
Dear John,thank you for your answer. So we will going on to use your receiver chip.Is there any possibility to stay informed about your new product in wireless charging. Best regardsRuediger
View ArticleForum Post: USB charger for 3 x NiMH cells in series
I am designing a charger which takes input power from computer USB port and fast charge for 3 NiMH cells(1.2V each, 300mAh) connected in series. I noted that somebody suggested BQ2002 in this forum...
View ArticleForum Post: LM3404 Output Impedance
Hi,I have a question about output impedance of LM3404.An attached file is a schematic around LM3404. This board is connected to the light guide panel with using UL1007/AWG24/1000mm.For impedance...
View ArticleForum Post: Upgrade bq 27410 V1.01
Hiiisorry for my english...I need to upgrade the bq27410evm because the last soft version is V1.03.So, I download the bq27410G1_1_03.senc but I don't know how can instal it on the evm? (need...
View ArticleForum Post: LM22676
HiI use the chip LM22676-adjMy inputs: Vinmin=9V, Vinmax=32V, Vout=5V, Iout=2A, t=70 CI have a few questions on this chip: 1. The datasheet contains the formula for calculating the inductance...
View ArticleForum Post: RE: LM5009A as inverting output
It seams the converter now is stable after I have added the decoupling to the -15VA.Thank you all for the input.
View ArticleForum Post: RE: Regarding BQ24103 Why charge current is reducing in the CC Mode?
Hello Jake,If I understand your question correctly, you want to know why your diagram isn't exactly the same as the one found on page 13 of the data sheet?From your graph, it looks like the device is...
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Forum Post: Unloaded LMZ14202H problem
Hi,we are developing a power module 36v in / 24v out 2 A . When the external 36V is turned off a battery system is activated with cca 26 volt supply voltage. Our goal is to keep the regulator working...
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