TPS54620: Vsense lead length
Part Number:TPS54620We have a design where it's better for us to put the TPS54620 on a daughter board, where the load (FPGA) is on the mother board. One approach is to use a bunch of pins on the...
View ArticleTPS65217: connecting VDC3 to VLDO1 after programming it for 3.3V operation
Part Number:TPS65217Hi,We have a prototype design using the TPS65217C PMIC powering a Compute Module (raspberry pi) and associated peripherals (like LAN9514 and wifi chip).We also use an STM32L4 to...
View ArticleQuestion of TPS54325
We have a question.Please tell us the current to set EN=High.In datasheet, the voltage of EN pin is 1.6V to set EN=High.Does this IC have the condition about current of EN pin?Best regards,Takahiro...
View ArticleBQ27542-G1: How to fix the SOC
Part Number:BQ27542-G1Hi,Sir: For the test purpose, we want to fix the SOC value,How to fix it?Thanks!
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LM74700-Q1: LM74700-Q1 N-MOS Drive Question
Part Number:LM74700-Q1Hi Team,My customer is trying to use the LM74700-Q1 for an ORING design. The part of it can be seen as below:However, when the circuit started working, we captured the voltage...
View ArticleLM3464A: About the LED drive power supply
Part Number:LM3464ADear all: Please find an existing LED drive power supply project:Input characteristics: 1. Input voltage: 120v-277vac frequency: 47-63hz; 2.2. Harmonic (THD):THD 15%...
View ArticleVariable high voltage/high current DC buck converter
Hi,I have a need to design a buck converter that can step down from 400 Vdc to variable output from 40 to 300 Vdc. The source supply is 1KW, so the current can be up to 2.5 A. The control voltage is...
View ArticleLM5145EVM-HD-20A: high current consumption at 0A loading
Part Number:LM5145EVM-HD-20AHi expert,My customer used LM5145 at their industrial design. They used two LM5145 EVMs to achieve two phase Buck topology. But when they tested with single EVM board, they...
View ArticleUCC2895: VCC is shorted to GND
Part Number:UCC2895when debugging the PSFB circuit with UCC2895, it is founded that VCC pin is shorted to PGND pin.could you advise possible reasons can result the phenomenon? TKS.
View ArticleBQ25898: BQ25898 thermal question
Part Number:BQ25898Hi,Customer did the thermal measurement with BQ25898.We found the max temperature of the chip is 91 degree C during 3A charging.The spec. of max operation temperature is 85 degree...
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TPS54340: TIDA-IPAD-AUTOMOTIVE-CHARGER-REFERENCE-DESIGN
Part Number:TPS54340Dear Sir,My customer would refer this reference design, he would know D100 function ?Thanks!Steven
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TPS7A63-Q1: TPS7A63-Q1 ESD Sensitive & pcb Layout problem
Part Number:TPS7A63-Q1Dear TI: Custom use tps7a6350-q1 for ESD Test, But it fauiled ----nReset pin output low voltage.and external light blink one time.the output cap is 10uf*3=30uf. I Double may...
View ArticleTPS22916: Auick discharge of TPS22916
Part Number:TPS22916HiPlease let me ask you a question about TPS22916 just in case.I think this device has quick output discharge.Does this function operate under disabled and no input?Best regards,Yokota
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UCC256302: UCC256302 VCR capacitance is set, the calculated value and the...
Part Number:UCC256302Problem: When the VCR is set, the calculated value and the theoretical value are deviated. VCR is divided into capacitance, according to calculation, cl2 47pF, cl9 10nF This set of...
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TPS8268090: TPS8268090 Inductor Body and Substrate clearance
Part Number:TPS8268090Hi TI Experts,We need to know what is the gap ( minimum height ) under the inductor component between inductor body and substrate, please refer picture below :The concern is we...
View ArticleUC3843: DC/DC 12Vdc to 280Vdc 400W
Part Number:UC3843Hi Sir,We are designing DC/DC power supply. Spec requirement as below. Input : 12VdcOutput : 250Vdc -280Vdc , 400W1) Could you please recommend suitable IC or reference design ? 2)...
View ArticleTPS92661-Q1: For unused LED pins
Part Number:TPS92661-Q1Hi team,Can you please reply the following quetion?In TPS92661-Q1, the datasheet recommends "When configuring for connections having fewer than 12 LEDs, the LEDs should be...
View ArticleUCC5310: UCC5310M
Part Number:UCC5310Hi,In our design we are using UCC5310MCDR gate driver IC but this is non-Automotive part.Please recommend the Automotive alternate part for the same.Specifications:Temp: -40 to 125...
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TPS22965: Non functioning of TPS22965NQWDSGRQ1 load switch
Part Number:TPS22965We are using two load switches TPS22965NQWDSGRQ1(U202) and TPS22965QWDSGRQ1 (U203) in our design.Please refer the attached images (Sch1 and Sch2) for design reference.Design Details...
View ArticleBQ78350-R1: the LEDs display wrong at low temperature
Part Number:BQ78350-R1Hello: First fully charge the batteryunder and at low temperature （-30℃），the battery can discharge more than 2 hours!Fully charge the battery ,then discharge the battery...
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