Power management

millenium mps 1000 drum moduleI need the name of the sop8 integrated circuit. The ST logo on it says ua gb145. The 8th leg is +12 volt input. The 7th leg is gnd. The 3rd leg is 2t1 smd push button. The 1st leg is out +12. Can you tell me what this integrated circuit is? 

Power flat 8 * 8 package have exposed pad , but resistance from junction to board is high whereas junction to top thermal resistance is less . which makes the package top cooled .Can you update the thermal resistance values. 

Have a quick question. What is the delay time from when the EN is pulled high to when the half bridge becomes non Hi-Z? Similar is disable delay time from when the EN is pulled low? I wasn't able to find this information in the data sheet. We will be operating in single half bridge (parallel) mode if that has any impact. Thanks!

Hi,Working on a project involving the STSPIN840 motor driver connected to a PIC32MK microcontroller,trying to implement current sensing for accurate motor control. The STSPIN840 has the current sensing pins SNSA, SENSEA1, and SENSEA2 for each channel.I would appreciate any advice on the following points:Current Sensing Setup: What is the recommended configuration for using these pins to measure the motor current accurately? RSNS = 330 mohmConnection to ADC: connected the sense pins to the ADC of the PIC32MK. When reading ADC getting current values very high(in 10s of A ) compared

Hello, The AEK-POWBMS63EN is a Battery Management System. I am not sure if I can connect to a voltage lower than 48V, if yes, would it work optimally? What issues I might come into? Please kindly advise  

Hi i'm looking for datasheet and replacement of GP429. Can someone help please ?

Hi, We have integrated the STWLC38 as receiver for our device. We want to know how to read the registers to know the status of charging, voltage and Current. https://github.com/STMicroelectronics/STWirelessCharging-C-Drivers/tree/main this gives patch update of firmware. We need configuration code as we are developing the firmware on Zephyr.

Hi all, I'm using a L6482H on a PCB with STM32F439VIT6 to drive a stepper motor. MCU and driver are connected via SPI. I have an issue with the GetStatus command; when the switch input on the L6482H is closed and the driver receives a GetStatus command, sometimes it moves the stepper motor to order to open the switch input. It does not move the motor everytime, but sometimes it happens. I tested this behaviour by repeatedly sending the GetStatus command with the switch closed (200 ms between every command). If the MCU send a MOVE command and ask the Status continously to test the "Busy" flag, the drive sometimes moves incoerently. It seems to happen when the Status is asked with the switch closed. Is there any relation between the GetStatus and the Switch input? I configured the drive to don't use the switch as "HARD STOP" interrupt (SW_MODE = 1 in CONFIG register) and the ALARM_EN mask the external switch condition   Thank

Dear ST Team, I hope this message finds you well.I am currently working on a new design project for [mention the application or product type if applicable] where we are considering the VNB35N07TR-E component. I have several questions regarding this component, and I would appreciate your expertise in clarifying the following points: Lead Time: Could you please provide the current lead time for the VNB35N07-E? We are looking to integrate this into our design and would like to plan accordingly based on its availability. Product Recommendation: Is the VNB35N07-E a recommended component for new designs, or would you suggest any alternative that may offer similar specifications with potentially better availability or support? Lifecycle and Obsolescence: Could you share any information on the lifecycle stage of the VNB35N07-E and whether there is any anticipated risk of obs

Hello, I purchased this IC and would like to use it to alternately control four different inputs so that the IC’s four outputs can switch sequentially. However, I'm currently facing an issue: I’m only providing input to a single channel, e.g., Ain, but the IC outputs on all four channels simultaneously. Could you please advise on the possible causes? 

LDL212-3.3v DFN (2x2) Running Superhot  With LDL212Heat Dissipation (Power Dissipation)The power dissipation PP can be calculated using the formula:P=(VIN−VOUT)×IOUTP = (V_{IN} - V_{OUT}) \times I_{OUT}Where:VINV_{IN} = 6.65V (input voltage)VOUTV_{OUT} = 3.3V (output voltage)IOUTI_{OUT} = 0.22A (output current)P=(6.65V−3.3V)×0.22A=0.726WP = (6.65V - 3.3V) \times 0.22A = 0.726WJunction Temperature (TJT_{J})The junction temperature can be calculated using the formula:TJ=TA+(P×θJA)T_{J} = T_{A} + (P \times \theta_{JA})Where:TAT_{A} = Ambient temperature (let's assume 25°C)PP = Power dissipation (0.726W)

The datasheet for the VN9D5D20F lists "Reverse battery through self turn-on" as a bullet point under "Protection", while the VN9D5D20FN datasheet does not.  This appears to be one of the major differences between the two parts, but I do not understand what it means and was unable to find a description in the VN9D5D20F datasheet.What does "reverse battery through self turn-on" do?VN9D5D20F:VN9D5D20FN:

 

Hello, we are searching for a USB PD Power Budgeting/ Load Sharing solution. Here an example: Lets say we have 4 USBC PD Ports. All in all they sould be able to source 60W. One port is sourcing 15V/3A=45W, then the remaining 4 should just be able to source 15W. Does ST have a solution for Load Sharing in its portfolio? When I quick searched all datasheets for the USBC PD Chips i havn't found anything. Thanks in advance.

I am designing an interface board where there is an ADC that needs two different power supplies (3.3V and 2.5V). To minimize this board, instead of bringing the two power supplies from outside, I would like to bring only the 3.3V one and through a voltage regulator provide the 2.5V one. Could anyone suggest a product that would be useful for this purpose? Thank you.

Hi, I am currently implementing software/firmware for the PowerSTEP01 chip and discovered a inconsistency in data sheet https://www.st.com/resource/en/datasheet/powerstep01.pdf. For parameter INT_SPEED (section 11.1.11 in datasheet) the equation does correspond to the stated limits.It says:i.e. steps/s = INT_SPEED × (2^−18) ÷ (250×10^−9)For smallest possible I

According to the reference circuit, R43 is 75kohm.Also UM2154 User manual said that R43 should be higher than 30kohm.What happens if R43 is 22kohm. Is overcurrent detected by STSPIN32F0?

HelloI need to estimate IFSM for certain current pulse.Does anyone know how to do it?I found this app note :Schottky diode avalanche performance in automotive applications (st.com)But it is not clear the method as intervals are weird :I ^4 x t = Cste for tsin>10 msI ^3 x t = Cste for 20 µs < tsin >10 ms  I ^2 x t = Cste for tsin<20 msand not sure if this is also applicable for standard diodes.In  addition, I wonder how to derate for different temperature in case datasheet does not contain this information.Tks. 

Regarding the shunt resistors connected to the SENSEA and SENSEB pins, the UM1829 has three 0.1 ohm resistors connected. Why is this? The datasheet says one 0.1 ohm resistor.Do I really need three of them?

Hi, Can PD Controller (STUSB4710) act as a DRD?STUSB4710 - Stand-alone USB PD controller (with short-to-VBUS protection) - STMicroelectronicsI believe that STUSB4710 cannnot operate as DRD (Dual Role Data), and can only function as UFP.If there is a way to operate it as DRD, please let me know how to configure it. 

Hey, probably a dumb question, but I couldn’t find it in the datasheet. Can each pin of the VNQ9025AJ handle 30A, or is that the rating for the smart switch as a whole with a limit on each pin? Honestly, I’m hesitant to believe a single pin can handle 30A.

I know this is a really dumb question, but I cannot find a definitive answer in the datasheet for the VNQ9025AJ, Quad channel high-side driver with Current Sense analog feedback for automotive applications.There are 4 pins called INPUT0 to INPUT3. There are 4 output pins called OUTPUT0 to OUTPUT3. I just want to verify that when INPUT0 goes to a logic 1 value, that OUTPUT0 is activated (i.e. current is flowing).I would also like to know if the input/output relationships are independent of each other. In other words, can I have INPUT0 and INPUT1 high at the same time with current flowing in OUPUT0 and OUTPUT1 at the same time? Or, can there only be one active input/output pair at a time?The datasheet says"Voltage controlled input pin with hysteresis, compatible with 3 V and 5 V CMOS outputs; controls output switch state.""controls output switch state" is a bit vague, IMO. it is also confusing to see the 4 CS output states controlled by 2 mu

Hi,When I was trying for DC-DC converter design, I have found this VIPer22A Isolated DC-DC converter design. I am having two queries here,1) Is still this technology in use?2) Can I get the details about the transformer which used here?Is there any new technology for the same DC-DC converter pls suggest for me. It will be better for further development. 

I have come across this part for my product for alternate part. we are using reset function as separate pin, and we generate 8.3ms of low pulse for reset function to the motor driver. On your datasheet STSPIN820 IC they general given an active low to reset and move to low power consumption. but I need to use reset function. what is the progress to do. or give me the time duration of reset.

Hi,We are using the chip PowerSTEP01 in our design. In the datasheet, it is mentioned in the application diagram that the VDDIO pin can be powered from the VREG pin. However, the X-NUCLEO IHM03A1 evaluation board design shows that it is powered externally. Which one is the correct way of doing it? Are there any problems or limitations in powering the VDDIO from the internal regulator? Best Regards,Biju