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  • TVS2200: Audio

    Part Number: TVS2200

    HI Sir 

    May I know TVS2200 can used for Audio application or not ?

    Thanks

    Interface forum Interface

  • TPS25730: Schematic review request

    Part Number: TPS25730

    Tool/software:

    Hi TI,

    Can you give me feedback on this simple schematic for TPS25730D sink-only PD?  It is a VBUS-only board with no battery.

    In particular, please note in the top right corner that several of the open-drain outputs are being used to sink LED current up to 3.6mA each (depending on what voltage VBUS is at, which may vary from 5-20V).  Is this acceptable or must I instead use a discrete transistor with each LED to reduce current flowing into the open drain outputs?

    Also, FAULT_IN is pulled up to LDO_3V3 by a 10k.  This will enable the TPS25730D, right?

    Any other feedback is appreciated. 

    Thanks,

    Not shown: VBUS_IN, CC1 and CC2 are coming from the USB-C connector; also not shown is a TVS2200 clamp on VBUS, as suggested in TPS25730 datasheet.

    Mike

    Power management forum Power management

  • TPS25751: VBUS Protection

    Part Number: TPS25751

    Tool/software:

    Dear TI Support,

    I am currently working on a design utilizing the TPS25751 controller for USB-PD implementation, and I would like to follow best practices for this device.

    I am seeking guidance on the most suitable type of protection components (e.g., TVS diodes, MOVs) for safeguarding the VBUS line from voltage surges and transient pulses.

    Our device supports PDOs of 5V and 9V, but it must be resilient to overvoltage protection (OVP) conditions up to 28V.

    We have a snubber circuit near the USB connector is intended for transient damping.

    This device is designed for consumer applications.

    I noticed that the EVM for this controller includes a TVS2200. Could you please advise on the recommended protection strategy for this application and explain the rationale behind it? 

    Thanks a lot for your help!

    Power management forum Power management

  • TPD6S300A: D+ & D- on SBUS OVP, ESD / VBUS ESD / RPD and PD controller

    Part Number: TPD6S300A

    Tool/software:

    Hello,

    I am currently designing a USB 2.0 hub with two USB-C ports capable of pass-through charging using Power Delivery. I am considering using the TPD6S300A chip, but I have some questions and need clarification on a few points:

    1. Since I am not using the SBUS pins, to protect D+ and D- from ESD and OVP, should I connect them to the port intended for SBUS and the ESD protections D1 and D2? This seems redundant to me because the SBUS pins are already protected against ESD along with OVP.

    2. Do the VBUS pins need to be protected against ESD? If so, is it possible to achieve this with the TPD6S300A component, or do I need to add an additional TVS diode?

    3. The resistors on the CC lines for the dead battery mode—won't they interfere with my PD controller, which also has resistors on the CC pins for the same purpose? I am using the VL103R chip from VIA Tech and am having trouble determining if the two are compatible. Would it be better not to connect the RPD pins to the CC lines?

    Thank you for your help.

    Best regards,

    Etienne

    Interface forum Interface

  • TPS65994AD: PA_VBUS pin damaged

    Part Number: TPS65994AD

    Hi,

    We have meet TPS65994AD PA_VBUS pin damaged issue. Fail rate about 6/100.

    Some MB this pin damaged after plug in 20V type-C adapter.

    This port we set in DRP role. we also find 3/100 pcs some IC on PP5V power rail also damaged.

    Would you please add me friend that I can send schematic and pjt file for review?

    Now we only know the major difference with EVM is TVS2200, does it may casued this damaged issue?

    Thanks!

    Jeff

    Power management forum Power management

  • TPS2663: tps26631

    Part Number: TPS2663

    Tool/software:

    hi， We are working on a design related to eFUSE and hope that the rated output can reach 10A. As TPS1686 cannot be ordered yet, we would like to use two TPS26631 in parallel. We would like to further understand some design details in the application notes<<Parallel Operation of TPS2663 eFuses>>'.
    Can you share schematic and layout files for the "Figure 3-1. Evaluation Board with Four TPS26631 Devices in Parallel" mentioned in the notes?
    thank you!

    www.ti.com.cn/.../slvaf13.pdf

    Power management forum Power management

  • TPS25751: VBUS Enable function? Source only

    Part Number: TPS25751

    Tool/software:

    Hey guys,

    we are currently in concept phase for a PD sourcing device.

    The idea is to use TPS25751D with BQ25756.

    We will not have a Battery as a source but a System delivering 12/24V (stil thinking about the Voltage) to source the BQ25756.

    Also the system will deliver 5V and 3.3V to supply all the internals of our device.

    There will be environmental circumstances in which the System will not be able to supply the full 100W PD for several seconds.

    The idea now was, in these seconds, to shut down VBUS over some kind of enable Signal/PIN. We dont want to turn of the whole BQ and TPS chip by cutting their supply voltage as the TPS also will be used for SSMUX control etc.

    We only want to signal the PD arrangement, that in these seconds the system does not have the Power to source PD.

    Also I am still trying to figure out how to tell the setup that it should be source only. No Sink at any time. Either by Hardware or Software. Maybe I just didnt read it but the documentation is a lot and sometimes you just get lost in it =D

    Thank you i advance.

    Power management forum Power management

  • TPD1S414: USBC 20V VBUS with 26V abs max. Which TVS should I use?

    Part Number: TPD1S414

    Tool/software:

    I have a customer designing a high volume product with USBC, but only 5V VBUS (no PD). They would like to protect against the case of a non-compliant USBC cable that presents a hot 20V to the system. The downstream components have an absmax of 26V, and surge testing has shown spikes exceeding 26V. 

    My question:

    • TVS2200 is the one I normally think of first for USBC VBUS, but it doesnt clamp until beyond 26V so in this case it wont work. 
    • TVS1800 seems to clamp near 20-21V, so I worry a hot 20Vdc cable would just burn this thing up. 

    you agree with those two statements? Is the TPD1S414 the best device for this condition?

    Thanks,

    Brian

    Interface forum Interface

  • TPS25983: Protecting TPS25983 from Transients on 24V rail

    Part Number: TPS25983

    Tool/software:

    Hi,

    I'm working on a compact board that uses both 14V and 24V rails. It has three voltage rails, one for 24V and two for 14V and needs protection against over-current, over-voltage, under-voltage, and possibly reverse current.

    I'm considering using three TPS25983 devices as fuses (one for each connector) with reverse-blocking MOSFETs. I'm also planning to add TVS diodes on the outputs for transient and ESD protection.  The 14v rails have a max current of 6 amps and the 24v rail has a max current of 4 amps.

    Here's my issue:

    • 24V Rail Protection: The TPS25983 has a max voltage rating of 30V, which doesn't leave much room for TVS diode selection. I considered the TVS2700 flat clamp, but its max clamping voltage is 32V—above the TPS25983's limit.  However I think The 14V rails are fine with the TVS2200.

    • Space Constraints: The board is very tight on space, so adding ideal diode controllers and MOSFETs instead of the TPS25983 might not be feasible because of size.

    • It seams to me the issue mainly arises when the reverse-blocking MOSFET is on. If it's off, the TVS2700 would be acceptable due to the MOSFET's higher voltage rating.

    My Questions:

    1. Any suggestions for protecting the TPS25983 from transients at 24V, considering its 30V max rating of TPS25983?

    2. Is there a way to tweak the circuit to get proper transient protection without exceeding voltage limits?  Maybe adding a comparator to the reverse blocking diode to detect transients and quickly shutdown the reverse blocking mosfet?

    3. Are there compact alternatives to the TPS25983 that could fit within my space constraints?

    I chose the TPS25983 mainly for its small size and integration with the reverse-blocking MOSFET. But given the space limitations, I'm open to other ideas.

    Thanks in advance for any advice!

    Power management forum Power management

  • BQ24074: TVS diode for BQ24074

    Part Number: BQ24074

    Hi,

    I need help to choose a TVS diode to protect a BQ24074. I'm not sure what clamping voltage is required.

    I am making a small bluetooth household consumer electronics product (a baby motion sensor). It's powered by a 300mAh Lipo and charged at 100mA from USB VBUS.I'd like it to be capable of passing UL testing and I believe they test with VBUS set to 24v. Ideally I'd like the product to tolerate these voltages without damage and to fail safely otherwise.

    The BQ24074 datasheet says the BQ24074 is tolerant of voltages up to 26V (28V max) and it has some inbuilt ESD protection.

    Would the TVS2700 be a good choice? (https://www.ti.com/product/TVS2700)

    Or the TVS2200? (https://www.ti.com/product/TVS2200)

    any help is greatly appreciated.

    My power section looks ilke this 

    Power management forum Power management

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