Part Number: MMBZ30VCL
Tool/software:
Hi,
For USB ESD protection, we selected a protection element based on the following requirements.
-ESD resistance: Contact/air ±20KV
-The latter stage (right side) has a voltage resistance of 24V
-Two types: protection even when VBUS is shorted to 20V, and protection for VBUS 15V
MMBZ30VCL is 24V, so it seems to meet the required specifications.
Is it okay to use it in the opposite direction to the usage described in the datasheet?
And, If there are any other products you recommend, please let me know.
D/S
Customer's circuit
Best regard,
Hiroshi
Hi Board Designers,
Inputs related to PMIC usage and SOC IO supply
Is using a load switch is not a MUST requirement, right? If the current capacity is sufficient, can we use LDO2
Can the PMIC LDO2 be used to supply the 3.3V IO?
Yes, LDO2 (configured as load-switch on TPS6522430-Q1) can be used to supply the 3.3V as long as the total current (including SoC + peripherals) is lower than 400mA.
The external 3.3V power-switch can be removed if the LDO2 (up to 400mA) is sufficient to supply the total 3.3V IO current. If LDO2 cannot supply the total current, then an external 3.3V power-switch must be used. The pre-regulator (PMIC input supply) cannot be connected directly to the SoC. One of the PMIC GPIOs is pre-configured to control the enable/disable of the external power-switch to include the 3.3V domain when executing a cold reset, an I2C OFF request and a power cycle.
A GPIO is typically programmed to control the enable pin of the external power-switch (if LDO2 current is not sufficient). For the TPS6522430-Q1 specifically, since all GPIOs were used for other purposes, the output of the LDO2 can be used to control the enable pin of the external power-switch. Here is the link to request access to the PMIC full datasheet and TPS6522430-Q1 user guide: https://www.ti.com/drr/opn/TPS6522X-DESIGN-RESOURCES
Can the PMIC operate with 3.3V input supply? Why you should not use the input voltage of PMIC as SOC IO supply
Yes, the PMIC can operate with 3.3V input supply as long as it meets the required voltage headroom for the DCDCs, LDOs and load switch. TPS6522430-Q1 can operate with 3.3V input supply which is the pre-regulator voltage used in the EVM.
Connecting any of the processor IO supply without ramping the other supplies for an undefined period of time is not a valid use case. Please refer to the power-down sequence where the IO supply is expected to ramp down before or along with the last supply source.
On of the key reason we do not allow the 3.3V PMIC input as SOC IO supply is the IO supply may be connected for an undefined period in case the PMIC does not start-up due to some fault condition detected by PMIC.
you mentioned that triggering a WDT error or an ESM error is one way to reset the SoC. Could you please explain these methods in more detail?
purposely causing a warm reset (with a WD or ESM error) will pull nRSTOUT low for approximately 10ms. This is documented in the TPS6522430 user guide which can be requested at the following link: https://www.ti.com/drr/opn/TPS6522X-DESIGN-RESOURCES.
Regards,
Sreenivasa
Part Number: TPS7B4258-Q1
Is there a simulation model available for the TPS7B4258-Q1 or TPS7B4259-Q1 ?
I am trying to simulate the current-limiting dynamic behaviour with a pulsating load current
Part Number: TPS25762-Q1
Hi Texas Instruments Team!
On 2026-02-24 i requested access for the Base Firmware Image of the TPS25762-Q1 USB-C PD Controller IC.
We want to design a USB to RJ45 Ethernet Adapter with PD Capability, so we need to enable USB Data in the Firmware Configuration.
Unfortunately my request is still Pending and i cannot start developing.
Can you please help me out?
Best Regards
Chris W.
Part Number: MSPM0G3519-Q1
Hello,
I would like to know if the MSPM0G3518-Q1 and MSPM0G3519-Q1 have similar safety compliance ratings as the MSPM0G3507-Q1.
The product filter on TI's website claims they do not (Filter by Funtional Safety-Compliant in the product finder, www.ti.com/.../products.html), but the specification sheets appear to have all the same safety features.
Could you elaborate on why this is?
Thank you,
Ryan
Part Number: F29P329SM-Q1
Hi all,
My team and I are currently looking for a suitable microcontroller for an automotive grade control unit. We have considered several options, such as the TMS570 series, the AM26x series and the TMS320F28P659DK. Unfortunately they all fall short for some of the project requirements. Untill now we did not consider the F29P329SM-Q1 and F29H859TU-Q1 as they have the 'Preview' status, but upon reviewing the specifications we have become very interested. The only thing that keeps us from choosing one of these microcontrollers is that they are still prototype/experimental parts. Is there any indication when these parts will receive the 'Active' status and when they will be available for purchase at electronics distributors?
Thanks in advance,
Jeffrey
Part Number: DRV8245-Q1
Dear team,
Our customer is investigating an EMC issue related to DRV8245/43 HW variant they are using.
Could you please have a look on below comments and provide feedback? Any possible workaround you could suggest? Thanks!
"We are currently investigating an EMC issue involving the TI motor drivers DRV8243/45.
TI drivers U18 and U19 appear to be contributing to radiated emissions in the 171–245 MHz range. During near‑field probing, we observed distinct narrowband peaks at 176, 196, 216, and 236 MHz when the drivers are powered. These emissions disappear when the driver supply line (I_RDB_INPUT_1) is disconnected, which indicates that the source is internal to the driver.
Could you please support us to identify the potential root causes? What are the recommended mitigation actions (layout, decoupling, configuration, or register settings) that could reduce these emissions.
"
Thanks and rgds, Jose
Part Number: AMC0380R-Q1
Hi exparts,
I want to confirm the defference between AMC0380R-Q1 and AMC0381R-Q1. Datasheet shows AMC0380R-Q1 is for AC input and AMC0381R-Q1 is for DC input, but I couldn't find difference in Functional Block Diagram. Could you tell me about it? Is it possible to use AMC0380 for AC input or PMC0381 for DC input?
Regards,
Hiromu
Part Number: ESD2CANFD36-Q1
Dear TI experts,
Could you explain exact differences between ESD2CAN36-Q1 and ESD2CANFD36-Q1?
first page of the datasheet explains the differences briefly. It looks like ESD2CAN36-Q1 has better performances.
But regarding to just names of the 2 parts, It looks like I should apply ESD2CAN36-Q1 to classic CAN lines, and ESD2CANFD36-Q1 to CAN-FD lines.
So could you explain how can I apply these 2 parts to real system? Is it okay to use ESD2CAN36-Q1 to CAN-FD lines?
Best regards,
Chase
Part Number: TCAN1473A-Q1
Dear TI experts,
Could you check the difference between TCAN1473A-Q1 and TCAN1473-Q1?
It is hard to find the differences based on the datasheets.
Best regards,
Chase