UCC29002: UCC29002 transient response
Part Number: UCC29002Hello I am considering using the UCC29002 load share controller to parallel two buck converters. The controller is accurate enough for my requirements in steady-state, however, I...
View ArticleClik here to view.
TPS63002: Circuit configuration for starting up with an input voltage of 3.6V
Part Number: TPS63002Dear all,I would like to ask a quesiton about this deviceOur customer is planning to start with an input voltage of 3.6V with the following circuit diagram (R3 = R4 = 2kΩ).However,...
View ArticleClik here to view.
TPS62173: Unstable under both load and no-load conditions
Part Number: TPS62173Hello,I have a TPS62173 that is being used to power only the digital interface section of two I2C devices. After the devices showed signs of constant POR conditions, I probed the...
View ArticleBQ25570: Load Connection
Part Number: BQ25570A very simple question, after reading the datasheet. In section 7.3.2 it says that "For the VBAT_UV Feature to function properly, the system load should be connected to the VSTOR...
View ArticleBQ24105: a negative Rt2 value calculated for a different Rth_cold of 10C
Part Number: BQ24105Hi,I'm using a 103AT 10K NTC type thermistor and would like to set Rth_cold and Rth_hot to 10 and 45C instead of 0 and 45C as per your example in the datasheet. I worked through...
View ArticleTPS7H2201-SP: Minimum current limit
Part Number: TPS7H2201-SPHi team,Working with a customer on TPS7H2201-SP as a current limiter. What is the minimum current it can limit? We are looking at very small, 0.02 amps.Thanks!
View ArticleClik here to view.
TPS56121: Start up behavior - EN/SS to GND
Part Number: TPS56121Hi Team,my customer whats to understand the start up behavior of TPS56121 better. For a LED application they need a as fast as possible slew rate of the output voltage.Looking at...
View ArticleBQ40Z50: How to understand Offset Error parameter?
Part Number: BQ40Z50Hi,Per bq40z50 Technical Reference document, one of QMax Update disqualified conditions is Offset Error.I don't understand it well, could you please help me to understand it better:...
View ArticleClik here to view.
ISO5451-Q1: Noise issue on top gate signal
Part Number: ISO5451-Q1I have the following:4 switch 3-phase interleaved bi-directional buck boost converter (please refer to TMS320F280049: CMPSS query to implement peak current mode control of a 4...
View ArticleClik here to view.
BQ24296M: F Acing issue in BQ24296M based desin
Part Number: BQ24296MHI,We are using below implementation in our design. Our goal is to get 5V@1.5A output .Case1: When 5V@1.5A Dc adapter is connected at VBUS ( When DC jack inserted, We are...
View ArticleBQ76920EVM: Boot button not working
Part Number: BQ76920EVMHi, I am having trouble with the boot button on one of the bq76920EVM devices that we ordered. The dashboard shows the EV2400 is connected but the bq78350 is grayed out on...
View ArticleClik here to view.
TPS82150: Buck converter functions correctly briefly then shuts off
Part Number: TPS82150I just received my card card from manufacturing with the following buck converter using a TPS82150. I inspected the workmanship and it appears good. I did some static IRC checks to...
View ArticleBQSTUDIO: My version of BQSTUDIO doesn't have the Chemistry icon.
Part Number: BQSTUDIOI'm running BQStudio v1.3.86 but there is no Chemistry icon to select. The program auto-detected my BQ27441GB and I have a Jauch single cell no.246521 battery, the datasheet says...
View ArticleBQ40Z80: Disabling FET_EN in the Field for Manual FET Control
Part Number: BQ40Z80Hi,My customer would like to know if they can disable FET_EN in the field in order to control the FETs manually. My concern was that it disables charge and discharge per the TRM,...
View ArticleTPS65131EVM-839: 3D model (STEP file) request for this board
Part Number: TPS65131EVM-839Hi Team,We have a customer requesting for the 3D model (STP file) for TPS65131EVM-839.Please let me know if it is possible to request this file for this board.I will send...
View ArticleBQ2005: Reference Schematic
Part Number: BQ2005Hello,Do we happen to have a reference schematic for BQ2005? It seems that the datasheet doesn't have a typical application circuit nor do we have an EVM or reference design that...
View ArticleLM2611: Which component values to adjust to avoid pulse-skipping mode?
Part Number: LM2611I'm implementing a +5V to -20V regulator with an output current requirement around 10-20 mA. Because of the low current, I'm anticipating that pulse-skipping mode may kick in, which...
View ArticleBQ76940: Getting started with 12S design
Part Number: BQ76940Hi, I'm getting started with a new battery management design. I am getting through a lot of the datasheet material and starting the schematic. I have a few questions. Here are a...
View ArticleBQ24090: Not consistently signalling !CHG when charging
Part Number: BQ24090Hi,We've been using the BQ24090 for years in a few designs and it's been pretty solid, with thousands of units in the field. With a new design variant I'm seeing some weird...
View ArticleTPS1H200A-Q1: TPS1H200A-Q1
Part Number: TPS1H200A-Q1I have another question on this high-side driver in regard to the DELAY pin and operation modes attached to it.In regard to the Latch-Off mode, the description appears clear....
View Article