TPS54622: RT pin connection
Part Number: TPS54622Hi Team,Here are two questions on RT pin 1. from the block diagram in datasheet, RT pin is connected to Vsense through " OSC with PLL" , not sure on the reason why the it needs to...
View ArticleLM5146-Q1: LM5146
Part Number: LM5146-Q1hello,we designed 12V buck Convertor based on LM5146.After Connecting Inductor (Pi filter C_L_C)input side of chip i am getting Oscillation of input voltage.After removing...
View ArticleLM46000-Q1: Problems with proper startup
Part Number: LM46000-Q1Hi,I got a problem with the simple switcher LM46000-Q1. When I apply the target input voltage on the Vin pin in one step (0V->24V) the LM46000-Q1 does not work properly. The...
View ArticleBQ40Z50: bqstudio
Part Number: BQ40Z50I used bq40z50 and bqstudio.When I download the bq parameter to chipset, I don't want to overwrite lifetime parameter.Is it possible? Please teach me about method.Thank you.Best...
View ArticleBQ25619: Boost mode and Default mode
Part Number: BQ25619Hi,I have trouble with Default mode of BQ25619. I don't understand that during default mode, boost mode works or not. In other words, can BQ25619 work in both default mode and boost...
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LMR33630-Q1: LMR33630-Q1 heating calculation
Part Number: LMR33630-Q1Hi，LMR33630-Q1 heating calculation.Is LMR33630-Q1 similar to TPS54331-Q11 heating calculation?
View ArticleTPS43330A-Q1: How to calculate the power dissipation of bootstrap resistor on...
Part Number: TPS43330A-Q1Hello Team,My customer asked how to calculate the power dissipation of bootstrap resistor(Rboot) when adding a Rboot resistor in series with a bootstrap capacitor(Cboot) of...
View ArticleUCC256404: LLC wide range voltage output solution
Part Number: UCC256404Dear experts,My customer is considering changing L6599 to UCC25640x, do we have better solution based on UCC25640x to improve wide voltage output operation performance? Vout can...
View ArticleTPS65631W: AMOLED driver that supports Single Wire protocol
Part Number: TPS65631WHi E2E,Good day.Our customer is looking for an AMOLED display driver which supports S-wire protocol. Initially, they consider using the TPS65631WDSKR however, checking the...
View ArticleCompiler/BQ34110: SOC has not update automatically.
Part Number: BQ34110Tool/software: TI C/C++ Compilersir /ma'ami am using Bq34110 chip with communicate Host device & using Lead Acid battery 7Ah.Q1. in my device SOC not update automatic and drawn...
View ArticleUCC28780: high power application
Part Number: UCC28780Dear experts,My customer is wondering if UCC28780 can be applied to high power application like 200W-300W without sync rectify? Do we have reference design or successful story to...
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UCC2897A: Facing issues in emi emc testing due to switching noise.
Part Number: UCC2897Ahi,I am facing a issue in emi/emc testing as i have POE based Design using Ic TPS2373-3RGWR with switching IC UCC2897ARGPR as the switching noise is coupling over the Ethernet...
View ArticleTPS62400: TPS62400 SW-gnd resistance gets very low
Part Number: TPS62400The resistance between SW2(pin10) and gnd(pin8) of TPS62400 could be very low, like several hundred ohms to even several ohms. Total failure rate is 0.11%(70/63000).The SW2...
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BQ24230: Quiescent Current BQ24230
Part Number: BQ24230Hello,We use the Charger BQ24230. We have to decrease the quiescent current of the whole system to reach an acceptable storage time of the device.We measure a quiescent current...
View ArticleUCC256403: About the data sheet table
Part Number: UCC256403For UCC256403 I want the same table as UCC256303 Table 7. Waveform Generator State Machine Internal Counter and Timers.
View ArticleLP87564-Q1: LP87564 about Inductor selection criteria
Part Number: LP87564-Q1The LP87564 data sheet contains recommended inductors.I think, it is necessary to select the optimum inductor according to the output voltage and output current.Can I use the...
View ArticleUCC28810: Transformer design
Part Number: UCC28810Hi,I was designing led drivers of 54,1200ma and 36v,1200ma. So iwas stuck at how to select cores or these. and next is how to get number of turns in primary and secondary. Please...
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TPS54160: PMLK using issue
Part Number: TPS54160Hi,I meet an issue while using TPS54160 in the PMLK book, related to Ts.As the datasheet shows: Rrt=504kΩ, can calculate fsw=250kHz, Ts=1/fsw=4us. But in the experiment, as you can...
View ArticleBQ40Z50-R2: Incorrect Capacity Readings
Part Number: BQ40Z50-R2Hi EveryoneI have a design using a BQ40Z50R2 and a single cell battery 4000mAh capacity 4.2 volt.When I first start up the system with a fully charged battery I sometimes see...
View ArticleLM5066IEVM-626: PI commander make errors when selecting LM5066 or LM5066I
Part Number: LM5066IEVM-626The PI-Commander software make error and closed application soon I select an LM5066 or LM5066I device. It works fine select other device(LM2506,LM25062,LM5056 ..).I installed...
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