Power management

We have a new design were we have multiple VN5050AJ high side drivers. We have connected all current sense pins together and want to enable just one current sense per time to save analog inputs. Now it seems that the CS_DIS pin is ignored and the chip always drives the correct current out of the Current_Sense pin and ignoring the CS_DIS. Levels should be fine as we have 0 Volts and 3.3V for the CS_DIS input (Pin 5) which is way above the limits from the Datasheet. 0.9 and 2.1V.  Thanks

Hello ST community! Actually my question is very simple. Is there anybody who worked with IC L9963E and used some calibration for more accurate Vcell measurement? I've found only mentioning in the datasheet about it. and in registers' section.But how to work with it... how to generate the NVM... I couldn't find any description of NVM registers in datasheet. And I couldn't find any other documents refers to these registers. Has anybody generated own NVM file in general? may be does anybody know about embedded calibration mode/process in particular? I suppose to make some recalibration process after PCB assembly process. P.S. I can do it on a high level software but it would be great to have this opportunity inside the HW.

Hi, I see on the datasheet that the external NMOS on the voltage regulator is connected to the positive terminal of the battery stack. Since the VREG voltage is 6.5V, can I connect the external mosfet to a lower tap of the battery stack? I want to do this to reduce the thermal stress of the external mosfet. Thank you.

Hello, where can i find the altium files for steval-1sa170v1?

Hello everyone !I am using STWBC86 and STWLC38 MCUs, using our own custom board.The wireless charging was going well, but the problem is this.[ When charging → put away the RX → put back the RX ] ...▶ the heat comes out from the RX MCU.Any ideas to solve this issue ? Thank you.

Hello,We are evaluating the performance of SiC MOSFET bare die with SiC MOSFET module.Can you share the detailed datasheet and simulation model of SiC MOSFET bare die?Thanks in advance.-BR,Rushi

Hi Team,I'm using STC3115AIQT on one of my projects for a 3.7V Li-Ion battery monitoring. I'm powering the IC by supplying an external 3.3V on the VCC pin (From an LDO) of the IC and giving my battery voltage input on the VIN pin.During the normal operation of the board, I'm getting an expected output from the IC without any issues.But when I'm turning off my external 3.3V LDO, the VCC is still having a voltage of around 650mV-750mV. And I suspect this voltage is coming from the battery (VIN pin) as the voltage goes to 0V when I remove the battery.Why is this happening? Is there any internal connection between the VCC and VIN pins of the IC?Any help is appreciated. Thanks in Advance-Hari

Hello, my device will work in a car and I need to arrange power for the RTC. Is the H750 processor used, is the diagram in the screenshot suitable or are there better technological solutions?

We have an application using an STPSC20H12-Y silicon carbide power Schottky diode in the D²PAK HV package (full MPN STPSC20H12G2Y-TR).  This diode has a No Connect pin that we would like to tie to the Anode pin to simplify board layout and improve thermal performance.  Will this connection degrade the 1200V rating between the Cathode and Anode?  Thank you!

Little confused by the spec of a max 90mV dropout while the Bias voltage needs to be >=1.5V higher than the regulated voltage.So this regulator is only good in the case where that higher voltage is already present in the system?https://www.st.com/content/ccc/resource/technical/document/datasheet/5f/25/d1/3f/f8/25/44/07/DM00123507.pdf/files/DM00123507.pdf/jcr:content/translations/en.DM00123507.pdf

hi, i need to drive & dimm 72 leds (vf=3.2v ;0.35A) + 72 leds (vf=2.2v; 0.3A). i want to use low Vin such as 24-48Vmax There are so many combinations.What is the simplest and cost effective way, for a simple drive and dimmer (by MCU). i want to drive the leds by current, and make sure that each string has the exact same current. i need to control the current value by MCU Thanks in advanceBest regards     

I'm using the STWBC as the IC to control the transmitter of a wireless battery charger. So far the battery is charging fine but I am unable to get foreign object detection working. I am adjusting the FOD parameters using the STWBC GUI application. Is there a documented procedure on how to optimize the FOD values?Either FOD errors occur randomly when there is no foreign object or no FOD error is given when a foreign object is there, depending on the parameter values. The STWBC GUI does show the RX report power drops significantly when I place foreign objects in the way. This leads me to believe it is only the FOD parameters that are the problem.

Hi, I need a inform for given part number "STM32F103RCT6TR". Kindly tell me. which is the interrupt pin for given part number.

Hello,We are using STPM33 IC in our design. I want to measure Harmonic Distortion. Can any one suggest me how to measure Harmonic Distortion?Regards,Kadam

I'm not sure if I've designed the circuit for PWM power control of the hot plate correctly. The PWM output is a 3.3V MCU. I assume the PWM period 200 ms. The hot plate is 1000W, 220V, 50Hz.

Hi all, I would like to ask you about VND9012AJTR/VND9016AJTR.1) When INPUT1 goes high (+5V) through 1k resistor, OUTPUT1 goes to +12V, OUTPUT0 goes to +2V. The same situation is with INPUT0 (=>OUTPUT0 goes to +12V, OUTPUT1 goes to +2V)Why? I want to switch the only one channel!2) We are switching +12V. We want to drive it with MCU with 3V3 high voltage level.Why it is not working?I am able to switch it on only with 5V0 high voltage level, I am using voltage generator with 1Hz frequency.3) When I am switching both switches by only single 5V0 signal from generator, both OUTPUTs have +6V approx. Why? Switch is not digital?  Thanks

Hello ,I'm using the STGAP2SiCD gate driver IC to my application as a power conversion unit.I have some question about VDD pin and each logic input's voltage level.In my application, I connceted 3.3V to VDD and used MCU PWM output pin to INA(3.3V),and BRAKE, SD, iLOCK pin pull high to VDD.but i can't earn any enerage from gate driver IC to let MOS turn on, In datasheet, I observe  the input logic condition  --  Vil and Vihthese pin record the output signal transfer's thershold voltage.it means if this input logic INA greater than 0.72*3.3V(VDD) than output VHA and GON_A pin will short.but I can not gate correct waveform from this driver IC.I think I can fully satisfy this condition. And if I used 5V to VDD,and used same condition MCU PWM output pin to INA(3.3V),it will have correct waveform, but I have some question about this driver IC.in worst case,the INA pin cannot fully satisfy greater than 0.72*5V(VDD).but it have correct waveform

I'm looking for an alternative product to this diode.  I can't find any data sheets to the original product myself, so im hoping you can help me out. 

hi Peter, have looked a lot around but i couldn't found what stand for marking B4.could you please help me? thanks a lot, Michele 

Hi,What would be the consequence if there is a bootstrap diode used from pin 12 (Vcc) to pin 16 (boot), as used in the old days. I know that this should not be necessary because of the internal bootstrap circuit. So, can both "ways of working" used in parallel? Regards,Jacco

Morning everyone, We are planning to control a 30Amps resistive charge using the BTA40 RD91 triac. I have seen that the connector of this faston has the appearance of a male faston connector with a 3.3mm diameter hole. Faston connections are not designed to support 30 Amps, do you know if there are special connector or what kind of connector is used for this 3.3mm diameter hole faston?It is very surprising for me this diamater (3.3mm), faston male connector usually have a shorter diamater. This is the reason why I think this faston is prepared for a specific connector that may support up to 40 A Thank you in advance

How much error will occur in the SOC calculation results if discharge occurs during the initial OCV measurement?Also, is the OCV measurement timing other than the initial stage of charging? At that time, are you looking at the battery current and measuring it when it is 0A?Application specificationsA lithium-ion battery or USB output is used as an input on the application side.The input power on the application side must be uninterruptible.Therefore, the “RSTIO” pin of STC3115 cannot be used.Battery specificationsBattery: Lithium ion battery (3.7V)Capacity: 4000mAhCharging: CC800mA, CV4.1VDischarge current: 360mAGauge IC settingsCurrent sense resistor: Yes. 47mΩCharge Inhibit function: Yes. Connect BATD/CDpin to EN of charging IC

D2/E2 should be 1.95, not 1.7.3x0.55+0.3=1.95https://www.st.com/en/power-management/stod32a.html

Hi all,I recently stumbled upon STBC15 and I am interested in integrating it into our next design. However, I am lacking a critical parameter from the datasheet: what is the typical and maximum allowed current flowing from VBAT to the OUT pin?

We would like to check if we can get the support of STTH30RQ06DY 2k ? Please feedback.