Forum Post: RE: Test Automation for BQ20Z45-R1
Hi Jake,Here are some additional files that you might find helpful.(Please visit the site to view this file)thanksOnyx
View ArticleForum Post: TPS23753 Oring Power OFF
Hi, I was reading the application report SLVA306A about the advanced adapter Oring solution using the TPS23753 and I can't seem to find an option where the gate drive continue switching while the...
View ArticleForum Post: RE: WriteSMBUSbytearray() function not working on BQ20z65-R1 for...
Deckerg,Since no one has replied, may i suggest an approach?Did you try sending the same sequence of commands/data through the Pro functionality of bqEVSW? That can confirm if the procedure is correct...
View ArticleForum Post: LM4040 as negative reference
Can the LM4040 series voltage references be used in a reverse mode to create a negative reference as you could with a standard zener?
View ArticleForum Post: RE: TPS23753 Oring Power OFF
ORing issues and some considerations are also discussed at a high level in the TPS23753A datasheet and the TPS23754A datasheet. There are a few fundamental limitations that you might run into in...
View ArticleForum Post: RE: LM317LC current limit delay.
Yes, I have heard of this phenomenon before. Root cause is unknown.Additionally, this start-up delay time reportedly varies noticably between different manufacturers of LM117.One unconfirmed solution...
View ArticleForum Post: RE: LM5007 with negative input voltage
Hi Eng,Is the input voltage fixed and regulated? Remember that the equivalence of 12V is with respect to RTN pin. So the VIN and VOUT relation will be something like:VIN(VOUT)-63...
View ArticleForum Post: RE: LM4040 as negative reference
Dan,Yes it can be used for a negative reference.This is an advantage of floating shunt regulators.
View ArticleForum Post: Regarding bq24075 Li-ion charger with System Load
I am considering this part bq24075 for my load 5V with 1.2A peak. The Vin is 5V with 1.5A peak.I want to have the battery charging and 5V output at the same time, when there is a 5V Vin. But I need to...
View ArticleForum Post: RE: LM3642 / Test condition at VIH (Input Logic High)
Hi Sami-san,Thank you for your response. I understand that the 1.2V spec is guaranteed at 2.5V to 4.2V, and it will be high at larger range 2.5V to 5.5V. I will show the 1.25V as just for reference,...
View ArticleForum Post: RE: Outputting Individual Cell Voltages from the bq77910a to...
The bq77910A is a standalone protector and does not have any way to allow access to the voltages used for internal comparisons.To read out voltages, consider a battery fuel gauge with protection...
View ArticleForum Post: TPS65217B Battery charging
Hi, I am using TPS65217B as PMIC for AM3352 processor. The design is a battery operated device. I would like to know the details about the time required for charging the battery with 1200mAh...
View ArticleForum Post: RE: bq20Z45-R1 DSC Fet Drive Problems
Hello Mark,You are right to expect that the charge-pump should supply gate voltage at least 8V above the source. Perhaps an over-current PF flag has been set, and that is inhibiting the charge-pump...
View ArticleForum Post: LM5575 vs. LM5005
Hello,I am looking for 5VDC@1.5A step down switcher with high voltage input. Most of the spec for LM5575 (1.5A, 16pin) and LM5005 (2.5A, 20pin) look the same. Yet, LM5575 is more expensive. Am I...
View ArticleForum Post: mini dcdc converter.
Dear all,i have arequirement to design and develop a mini dcdc converter with the following spec: Input 9...... 18vDc. Output +/_ 5v @ 100....200mA with isolated ground. kindly specify a sch with...
View ArticleForum Post: RE: could TPS54231 use for inverting boost with swift
John,I can`t get the suggestion scematics from SWITCHPRO or POWERSTAGE,could any schematics do for Vin=5V to Vout: -21.5 I=0.2A please?thank you very muchREGARDS
View ArticleForum Post: +3 V to -60 V for bias PIN photodiode
Helpwith a simplesolution to convert + 2.7-5V to negative - 60V( - 50 V to - 60 V)for biasingthe pindiode.
View ArticleForum Post: Improving accuracy of TPS7A4700 with Opamp
I would like to improve on the output voltage accuracy of the TPS7A4700 using an external reference. I am thinking of using an opamp to control one of the voltage setting pins. Is this OK? I will...
View Article