Forum Post: RE: bq24272 External NTC Monitoring datasheet clarification
The 272 is uses JEITA. The datasheet needs to be updated. Please refer to the bq24160 datasheet in the meantime.The EVM resistor values are for use with the onboard potentiometer and not intended to...
View ArticleForum Post: RE: How to disable bq25504?
Great, I think i will use a N channel mosfet to short Vin pin using a msp430 pin to activate it, or perhaps Vbus from the usb connector without expending one microcontroller output for that.Thank you...
View ArticleForum Post: RE: how to power the tps65070 if only the AC5V input
Hi Qin,POWER_ON is an input so, the TPS65070 should not pull the POWER_ON pin down. Are you sure that the is 5V at the AC pin? At 5V biased, a 100k pull up should provide enough current to the power_on...
View ArticleForum Post: RE: LM2936M-5.0
I have just received some of the Taiyo Yuden ceramic capacitors recommended in the Webbench designs for this regulator.They have a very low ESR.Unfortunately these capacitors have made no difference.Is...
View ArticleForum Post: LM3481 - Boost Converter
Currently trying to use a LM3481 on an msop-10 adapter to put it on a protoboard. We are trying to build a 24 to 0.8A 48V boost converter for our design project at school. We got the design off of the...
View ArticleForum Post: LMZ10501SE
Hi!We recently reworked a few LMZ10501SE parts that had failed with LMZ10501SH parts, and yesterday we had a puzzling failure.It was reworked last week as a 5V/3.3V and yesterday the board died. When...
View ArticleForum Post: TPS84621 value of internal pull-up
Let me ask about TPS84621.This IC's INH/UVLO pin has internal pullup from datasheet page 4(4).How much voltage is it pullup with?Tsuguhiko Asai (Macnica FAE)
View ArticleForum Post: Is it possible to switch of all DCDC outputs in TPS65070?
In our product we are using TPS65070 PMIC to supply OMAP L138 and MSP430.We are trying to switch off TPS65070 PMIC outputs DCDC1, DCDC2, DCDC3 and LDO2. We need only LDO1 output supply always ON. It...
View ArticleForum Post: RE: Buck PSU - 10~32VIN with FSW = 600KHz (TPS54240 / TPS63020...
Hi Jeferson,All your calculations look correct. I did not notice any errors or unusual results.A feed forward capacitor is not necessarily required but could be used if you would like to speed up the...
View ArticleForum Post: Inductor recommendations for smallest footprint
I will be using LM20134 to provide few voltages in my design (couple of core voltages and IO for several FPGAs), and wanted to run inductor choice by you to see if there are any issues.The datasheet...
View ArticleForum Post: RE: TPS40170 start up issues
Hi Ramnath,Thank you for the screenshots on each pin. The switching waveform and high-side gate drive are very odd.I now noticed the ILIM resistor of 191kΩ is very large. This puts the ILIM voltage...
View ArticleForum Post: BQ24070 schematic review
Please find attached schematic diagram. I have some doubt about DPPM programming. Also should all the pullups be connected to VBUS or system voltage (2.8V). Please review this circuit and send me some...
View ArticleForum Post: BQ24070 schematic-Please review
Please find attached schematic diagram. I have some doubt about DPPM programming. Also should all the pullups be connected to VBUS or system voltage (2.8V). Please review this circuit and send me...
View ArticleForum Post: LM5006 strange behavior in DCM
I am using the LM5006 with the flyback diode to allow the regulator to take advantage of DCM when there is no load.On one of my boards, every so often the SW ON pulse lasts longer than normal, allowing...
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Forum Post: Enable/Diable control for DCDC2 converter of TPS65070
Hi,I have encountered an peculiar problem while working on TPS65070. One of our use case with this is device is switch OFF DCDC1,DCDC2,DCDC3 and LDO2. so the only device which is operation is LDO1.This...
View ArticleForum Post: RE: BQ76PL536A fault signals without uC
Currently, Z100 can't communicate with PL536. As you mentioned above, PL536 is SPI communication which Z100 doesn't support.As of today, Z100 can't work with PL536.We don't have Z100+PL536 solution.We...
View ArticleForum Post: UL standard number of TPS2042BDGN,TPS2552DRVT-1
About The File number E169910 of UL, please tell me the certification in which standard when I received the certification because the UL standard number is unidentified.Target devices are...
View ArticleForum Post: Junction temperature of LM3414, ePSOP-8
Dear All,From TI datasheet, it mentioned LM3414, ePSOP-8, can be up to 125 deg.C of junction temperature. But this is impossible to measure. Is there any where provided the maximum case...
View ArticleForum Post: RE: TPS659113 with DM8148 RTC time error issue
Hi ,We have the same problem.http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/242890.aspxJiger
View ArticleForum Post: Bq25504 in a WSN
Hi,We are working in a sensor nodes that aim to be similar to that it is shown in http://www.ti.com/lit/ml/slyt472/slyt472.pdf. It is intended to make use of the depicted devices, but we are having...
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