Part Number: TPS3430 Hi Tis, I want to find a watchdog IC, the feed dog time should be over 30s, if Tps3430 is a good choice. Or pls give me some advice。 thanks a lot.
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Forum Post: TPS3430: Is a tps3430 good choice?
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Forum Post: BQ78350-R2-DEVICE-FW: Problem with parameter setting, the learned full charge capacity decreases by value we set in FCC learn down
Part Number: BQ78350-R2-DEVICE-FW Hi, I'm posting this question on behalf of my customer. It appears they're having trouble with the EVM of the BQ78350-R2. we have a problem with the parameter setting of BQ78350-r2. After each cycle the learned full charge capacity decrease by the value we set in FCC learn down. The design capacity is 15042 mAh. Normally the pack capacity should be about 1000 mAh above this value, but every time we discharge the pack the learned full charge capacity drop by the specified FCC learn down. What can be done to correct this? Thanks, Lauren
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Forum Post: ISO5852S: PCB layout considerations for ISO5852S.
Part Number: ISO5852S Dear sir, ISO5852S design layout suggest to proceed with 4 layer pcb. Due to urgency, we are planning to design the ISO5852S based inverter gate driver board based on two layer PCB. What are the effects we Will face in the two layer PCB? Shall we try with two layer pcb for inverter application or do we need to proceed with only 4 layer pcb. Kindly request to guide us to proceed further. Thanking you. Thanks & regards, Rajasekaran.
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Forum Post: BQ25890: Logic Level Confirmation
Part Number: BQ25890 I am sure to a lot of people this will be a silly question, therefore it should be very quick and easy to answer (I hope) :) I have the BQ25890 implemented into a design that has a 3V3 MCU connected directly to the I/O pins on the BQ25890 chip. With a varying LiPo battery voltage of 3.2V - 4.2V, will the logic pins (STAT, INT, OTG etc) ever feed more than 3.3V into my MCU and damage it? Or, do these pins only ever see a max of 1.8V internally when floating? Thanks in advance for (hopefully) a simple confirmation!
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Forum Post: BQ25890: OTG / VBUS Feedback
Part Number: BQ25890 Hopefully a simple and easy to answer question but I want to be 100% clear: If 5V is introduced onto the VSYS rail (from the charger) when the OTG is activated and producing 5V internal from the battery, what does the chip do? -Prefer the incoming 5V? -Block the incoming 5V? -Shut-down the OTG? Should I design some kind of filter for this to block the potential of incoming 5V or does the chip handle this with adequate safety?
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Forum Post: TPS2378: Connect to UPoE PSE
Part Number: TPS2378 Hi Team, Our customer can not get power when using TPS2378 *2+ UCC2897A connect with PoE switch(CISCO Catalyst 9407), and can get power if using PoE injector( POE-173 / PD-9501GR ). I'm not sure CISCO Catalyst 9407 is bt solution or UPoE solution, so... 1. If CISCO Catalyst 9407 is a UPoE solution, in previous thread, TI mention that there are only two ways to do UPOE. Through LLDP using a single signature PD or through Forced UPOE using a dual signature PD, so can I asume that CISCO's switch useing LLDP to do UPoE and that's why PD( TPS2378 ) can not get power? 2. follow question1, if not, then what should be the reason? 3. follow question1, if yes, then what can I do for CISCO's switch for geting power? Any setting to modify? 4. If CISCO Catalyst 9407 is a bt solution, then it will not provide power for UPoE PD ( TPS2378 *2), am I right? # The white paper of CISCO's switch for reference: https://web.archive.org/web/20171128140727/http:/www.cisco.com/c/en/us/products/collateral/switches/catalyst-4500-series-switches/white_paper_c11-670993.html Best regards, C.T.
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Forum Post: TPS3808: TPS3808 MR_B MAX Internal Pull Up Resistor Value
Part Number: TPS3808 Would e2e "TPS3818 - pull-up resistor to Vdd" at https://e2e.ti.com/support/power-management/f/196/t/108036?tisearch=e2e-sitesearch&keymatch=TPS3808%20MR%20max%20internal%2090K%20resistor%20value also apply to TPS3808 ?
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Forum Post: BQ79606A-Q1: Sample code
Part Number: BQ79606A-Q1 Hi TI team: Do you provide libraries or sample code for the IC? Thanks, Sebastian.-
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Forum Post: LMR16006: Best practice for unused device
Part Number: LMR16006 Hello! Our DRV832xR uses an internal LMR16006X to provide a buck output in case the customer wants it. Some customers buy the Buck included version but won't be using it at all. I have been told by some that simply routing the SHDN to GND is enough, others have told me that all 6 pins of the buck should be routed to GND. What is the official best way to keep the buck off/safe if the buck will never be used? Regards. -Adam
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Forum Post: BQ27GDK000EVM: latest FW version
Part Number: BQ27GDK000EVM What is the latest FW (firmware) image version for the GDK (not the EV2400 FW)? Is it 4478.GDKFW_V1_06_ INA220 .txt? 2) and please provide a download link. Thanks, Corey
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Forum Post: TPS92641: Shunt dimming FET
Part Number: TPS92641 Hi team, My customer is considering to use the TPS92641. Could you support the following question? Could you let me know how to select the shunt dimming FET? Does a current flow to the shunt dimming FET same as LED current? What specifications does the shunt FET need? Regards, Yamaguchi
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Forum Post: TPS62811-Q1: RC snubber from SW node to GND is needed or not
Part Number: TPS62811-Q1 Hi team, May I know if TPS62811-Q1 need to add RC snubber from SW pin to GND or not? If snubber can't be used for this device, to reduce SW node spike of TPS62811-Q1, as I know besides input 0402 MLCC decoupling cap, any ways you think we can propose? Thanks. Regards, Allen
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Forum Post: TPS92512: PDIM (PWM) frequency
Part Number: TPS92512 Hello Customer used TI/TPS92512 for LED driver control, Since they need to drive 0.7A current for LED control. Could customer used 250 Hz for PWM frequency design ? Thank you. BR Patrick
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Forum Post: LP8556: LP8556
Part Number: LP8556 Hi Sir, We can configure the current max register via A1h. But can’t configure the LED current via A0h. When we config A1h; A0h data will be copied as A1h, is something setting wrong here? Below is our present setting, A1h -> 9Fh A5h -> F4h A7h -> F6h A9h -> 80h 01h -> 9Bh Thanks, Ian.
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Forum Post: BQ25570: BQ25570 VOUT Output voltage is unstable
Part Number: BQ25570 Hello my question is I set the voltage output is set to 3.3V.My system is a BQ25570 powering a system(MCU) at 3.3V. The system is on the regulated VOUT net of the BQ25570 (on the buck step-down). But sometimes the built-in Lbuck of bq225570 will have a voltage below 1V. Sometimes using the meter to measure the voltage and return to normal 3.3V The following is my circuit diagram TPS62737 is not on the piece (Please visit the site to view this file)
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Forum Post: BQ40Z60: NRND
Part Number: BQ40Z60 Hi, I recently noticed the bq40z60 became NRND (Not Recommended for New Design: http://www.ti.com/product/BQ40Z60 I already have designed a standard battery management block for several products using this IC in our company. I worry that I should change the strategy of battery management hardware. Question: 1) Could you claim the reason why this decent IC became NRND? Difficulty to use, covert flaw, or low yield, etc. 2) Would you introduce an alternative or eligibles for a new design? Thanks again, Joshua Kim
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Forum Post: LM5176: LM5176: output ripple
Part Number: LM5176 Dear Sir, Please refer below picture, customer's output ripple different with EVM. Please you kindly provide improve suggestion. Electric spec: Vin=10V~36V, Vo=12V/10A Thanks! Steven
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Forum Post: BQ25570: BQ25570 VOUT Output voltage is unstable
Part Number: BQ25570 Hello my question is I set the voltage output is set to 3.3V.My system is a BQ25570 powering a system(MCU) at 3.3V. The system is on the regulated VOUT net of the BQ25570 (on the buck step-down). But sometimes the built-in Lbuck of bq225570 will have a voltage below 1V. Sometimes using the meter to measure the voltage and return to normal 3.3V The following is my circuit diagram TPS62737 is not on the piece
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Forum Post: TL1431-Q1: ESD Rating of TL1431QDRQ1
Part Number: TL1431-Q1 What ESD rating of TL1431QDRQ1? Although we checked datasheet and we confirmed with TI Customer support center,we could not find any information. Best regards.
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Forum Post: LM5164-Q1EVM: LM5164-Q1 EVM: gerber file
Part Number: LM5164-Q1EVM Dear Sir, Can kindly share LM5164-Q1 EVM gerber file? my customer would refer it. Thanks! Steven
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