TPS544C20: If not use PEC
Part Number:TPS544C20Hi,If I do not use PEC with PMBus control of TPS544C20 / TPS544B20, I understand that register have not to set on PMBus about PEC, is it correct?If the host side does not assume...
View ArticleTPS544C20: CNTL pin and PMBus operation
Part Number:TPS544C20Hi,Could you tell me about questions from our customer?· Can the TPS544C20 / TPS544B20 turn ON / OFF the power only by controlling the CNTL pin?· Is it necessary to set in advance...
View ArticleQuality of IC data sheets
TI data sheets used to be used to be a paragon for the rest of the semiconductor industry to emulate, but now I am seeing the standards slip.This week a couple of our developers got into an argument...
View ArticleLMZ34002: theta Junction-Case top and theta Junction-Case bottom
Part Number:LMZ34002Hello,Can you share the theta Junction-Case top and theta Junction-Case bottom for the LMZ34002RKGR?
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LM5007: current limit function of LM5007
Part Number:LM5007Hi,We tested the current limit function of LM5007 and found it's strange comparing with other chips:When the current limit function was trigged(around 0.7A), the switch frequency...
View ArticleUCC2819A: About abnormal noise (sound)
Part Number:UCC2819AhelloThank you for your response.Well, I sent the waveform on 27th September, but is there a cause of the new sound more than the waveform?Also, Try reducing the bandwidth of CAOUT....
View ArticleLM34936: Required gerber for evaluation board.
Part Number:LM34936Hi,I am planning to use this part in our development. Can you provide gerber files for the evaluation/ Demo board LM34936EVM.
View ArticleBQ25895: on/off control
Part Number:BQ25895Hi,I plan to use a BQ25895 in a new project. This chip is perfect to provide 5V to a cpu and others chips from an external wall adapter or from a li-ion battery in case of external...
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BQ24753A: Some doubts regarding device operation modes
Part Number:BQ24753AThe Circuit is attached . Let's say we are using two cell Li-ion battery 7.4V (Max. voltage 8.4V). As per my understanding while charging this voltage is gradually increases at...
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UCC2897A: The clamp P-MOS waveform isn't right when do the tests of UCC2897A
Part Number:UCC2897AHi team，My customer is using the UCC2897A now. When they do low temperature test -30°C，the waveform is weird. The yellow is Vgs of P-MOS,green is the Vds of P-Mos. The blue is VDD,...
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UCC2897A: The clamp P-MOS waveform isn't right when do the tests of UCC2897A...
Part Number:UCC2897AHi team，My customer is using the UCC2897A now. When they do low temperature test -30°C，the waveform is weird. The yellow is Vgs of P-MOS,green is the Vds of P-Mos. The blue is VDD,...
View ArticleWEBENCH® Tools/LM25118: Low Current output
Part Number:LM25118Tool/software: WEBENCH® Design ToolsHello,Hello, I created the enclosed LM25118 design with Webench: Vin 3.5 to 29.0V Vout 15.0V, Iout 0.2A. For small output currents I get no values...
View ArticleTPS55340-Q1: schematic review
Part Number:TPS55340-Q1Hi team,Could you help review the attached schematic of tps55340-Q1?Design specs: Input: 12V battery, normal range 7-18V, output: 15V/0.5AThanks.Dongbao(Please visit the site to...
View ArticleBQ24070: Input and Output Voltage for BQ24070
Part Number:BQ24070Hi,We are designing a battery charger for our application device and we are planing to use BQ24070 partLet me put forward you the requirement that I haveInput adapter voltage is 5V...
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TPS23523: TPS23523 datasheet spec might need correction
Part Number:TPS23523Hi team,Description:(1) When testing GATE2, I found the really sourcing current is 5mArather than 50uA, please kindly comment on this.(2) Please refer to datasheet Figure. 12. As...
View ArticleCSD87350Q5D: OCP limits
Part Number:CSD87350Q5DHello team,We are using the CSD87350 in a POL application along with the LM27403 controller. We need to characterize the resistance the half-bridge has between the TGR sense...
View ArticleUCC24624: only used in center tapped LLC?
Part Number:UCC24624Hello,I am just wondering if UCC24624 can only be used in center tapped topology in LLC and it can not be used in voltage doubler. Because it only has one shared source sense pin...
View ArticleTPS56628: Datasheet missing package drawing
Part Number:TPS56628I see the recommended sPCB footprint but nowhere can I find the actual dimensions of the part. Normally we would see body dimensions, pitch, etc in a package drawing but I haven't...
View ArticleLM5166: locks out and must be power cycled.
Part Number:LM5166LM5166 locks out and wont restart without power cycle. We have a temperature controller we designed for off road equipment. It controls 2 fans. about 10 % of the controls show this...
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UCC28700: UCC28700 unstable switching during mode transition
Part Number:UCC28700Hi support team,My customer is using UCC28700 to design a wide VIN range aux power supply. We found during the mode transition the switching become unstable and caused audible noise...
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