Power management

i could not receive whitepaper which is titled "How to save space and eliminate unnecessary cabling in space-constrained vehicles" even i filled out the form...please give me support. Whitepaper: How to save space and eliminate unnecessary cabling in space-constrained vehicles – STMicroelectronics

Hi,Is there a SPICE model available for VNF1048F (High-side switch controller)?Many thanks,SMPS85

I having issue addressing L9963E when the device is already awake. Currently my team is working on developing a BMS using two L9963E in a daisy chain configuration. In some instances, we may have to reset our micro controller(eg: Soft Reset, WDT reset). During that period L9963E will already be initialized and awake (Comm timeout is set to 2s). After the soft reset on the micro controller, the program tries to initialize L9963E by first reading DEV_GEN_CFG. I expected that if L9963E already initialized it should give me correct config in DEV_GEN_CFG but all i got is 0xFFFFFFFFFF from both L9963E. Since it isn't the correct config, the program will send the boardcast cmd with the correct chip id and all as mentioned in the datasheet. Then again it will read DEV_GEN_CFG register and again it receives 0xFFFFFFFFFF. The program will tries to initialize L9963E for 3 times if it fail an error is send.Also even though initialization failed in this case, I could

 Hello, I'm trying to set UV OV value of my L9963E. I'm aware that writing "threshVcellOV" and "threshVcellUV" fields in "VCELL_THRESH_UV_OV" register to do that. However, there is no information about which bit values corresponding voltage values. At least I couldn't see.The table 39 just shows the max min voltage values of it. 

我需要一份STWBC2-HP的原理图文件，我已经登陆了，但是我在下载的时候依旧提示我登录我还想问STWBC2-HP这个IC需不需要驱动文件，如果需要的，麻烦一并发给我谢谢。  

Hi All,I have developed my own Evalboard for the STWBC2-HP based on the STEVAL-WBC2TX50. Now i have flashed the stdes-50w2cwbc_FW_v1.0.0.0.hex firmware to the board and the Software shows the following. The power transfer does not work. Do you have any suggestions why that is so? Thank You  

We were designing 24v 1.5 Amp smps using l6562 referring application note AN1059 fig 16. getting the 24 output but fluctuating when load is connected and without load power factor is 1.00 and with load it drops down to 0.2 PF and which configuration is the suitable for my application among those three which I have attached ?also design calculation is attached is anything we're missing ?

Hello!Our company is looking for an ultra-low power solar charging MPPT chip solution. Please recommend some suitable chip models, along with specifications, reference design diagrams, etc.1. The open-circuit voltage of the solar panel is 6V, and the short-circuit current is 12.9mA.2. The charging battery in the subsequent stage is a 4.2V cutoff charging voltage.3. The MPPT needs to supply power to both the battery and the subsequent load. The load voltage is approximately 3V, which means the MPPT must provide a voltage that is adjustable and can be stepped down, and it would be best if it could be separated from the battery charging voltage.4. When our solar panel charges the battery at 6V, it drops to 4.2V. This direct charging efficiency is relatively low, so we have introduced the MPPT, hoping to improve the charging efficiency.5. If the MPPT can monitor overvoltage, overcurrent, undervoltage, and undervoltage of the battery, that would be bes

Hi,I am planning to design a 1.5 kW EV charger based on the STSW-2KW5CH48V reference design. However, I require the source code and related documentation to proceed with the development. Could you please provide the necessary source code and all relevant documents to help implement this design?"An early response would be appreciated."Thank you...

Hello,We use the two products together for a Qi Transmitter (SWTBC86) and Qi Receiver (STWLC38) solution for a single product and it's accompanying charger board. The eval kits of both boards perform much better than our production design, particularly our TX board, and we're wondering why that is the case.Our designs were based off of the reference schematic of both ST products. The coils are the same.Some remarks:1) The transmitter overheats to > 100C in about 15 minutes2) Efficiency nears 45% even at a nominal distance of 2.5mm3) We send about 5.5W across the link and receive 2.1W (desired receive)4) Operational TX voltage is 12v (to try and meet our distance requirement - up to 6mm). Receive voltage is set to 5.0v, that goes into a 3.8v nominal (4.35v charged) li-ion battery charger5) Stock firmware for bothBecause this is for a consumer wearable, the efficiency needs to be

Hello,I am trying to develop my own sensorless motor control using the STEVAL-ESC001V1 Board. The motor used is a 6 poles BLDC motor. I have successfully been able to run the motor in open loop and it’s running well.In order to have feedback and estimate the rotor position, I want to measure back-EMF voltages, however I can’t really tell where is the back-EMF voltage. I have measured the (curr_fdbk1, curr_fdbk2, curr_fdbk3) and (PHASE_1, PHASE_2, PHASE_3) pins and both of them almost have the same output which is the current feedback. I find this weird because, from my understanding the PHASE_x pins should be the back-EMF voltages.So my question is: from the schematics of the board, which point should be measured in order to have the 3 Back-EMF voltages on the oscilloscope?Attached are the adc measurements of the curr_x pins using ADC in open loop as well as screenshots from the relative schematic parts. Attached is

STM32F746G-disco board currently uses a STLD40D led driver. I am switching to an LCD that had 1000 nit output that can draw 150mA.  Looking for a driver that can handle about 200mA with PWM dimming capability.  Any suggestions appreciated. 

Hello,I am looking for an IC to monitor cell voltages of a 12s lipo battery.I found the L99BM114 IC. To get started, I bought the STEVAL-BMS114TX.Currently, I have connected 12 resistors in series to my lab supply with 48v. In between these resistors, I soldered cables and connected them to the Connector 7 (P1). On Connector 5 (CN1) I connected an STM32 Development MCU. With that MCU, I try to communicate via SPI. On Connector 2 (CN3) I connected my MCU: GND to GND, VIO to 3V3 and VDD to 5V. My Problem is that I don't get any sings of life from that board via SPI. The Cellcoltages mea

Can anyone help me understand the basic power consumption of L9963E before and after wakeup?

Hi, i made up a set up of 4 cells and I connected them to the connector of eval-l9963e-mcu. I already changed 4 cells, cause it seems like there is a dissipation for the cells. When I active the balance by GUI i don't see that the cells are balancing, oyherwise they seem like are discarge fast.Can I know if there is someone that have used the GUI and if he as find problems like mineThank you so much

Our application requires charging a laptop at 65W via USBC with USB data passthrough to the laptop as well.  A tablet computer is typically used to communicate with the laptop while it is charging.  The roles would be aligned with the laptop acting as a device while charging.  Does the STUSB4700 negotiation support data along with power delivery?  If so, is this an NVM default configuration or would microprocessor intervention be required?

I want to design a USB4 Hub where one UFP USB C port has data connection and charging capabilities for a DFP, but can also get charge from a STUSB4710 that I'll supply with a DC voltage externally. So my hub would have a DC input and a USB C data I/O with DFP charging. I'm fairly new to USB C design so I don't really know how I can manage CC from both the STUSB4710 and from the DFP USB C for simultaneous UFP charging and data transmission. Any help would be appreciated.

Hi Sir/Madam, My application is photoelectric sensor object detection or object sensing. I am using the L7805 ST make. Positive voltage regulators output voltage is 5V, and I am giving the input voltage as 24V, and the maximum DC voltage is up to 30V DC. The regulator input and output decoupling capacitor value is 10uF/50V_0805. Our main problem is decoupling capacitor failure, either input or output decoupling capacitor. And also, we added the series 10E before the decoupling capacitor; still, we are facing the decoupling capacitor failure (capacitor short). If anyone knows the reason, just tell me.

hi all,     i am designing flyback converter based on the l6566bh. i have 2 outputs on the secondary side, both are separate windings (different ground potential) in transformer. can i short together for shared ground reference if isolation is not necessary.

Hello ST team,I would like to have SPICE model for STGHU30M65DF2AG and for STGSH80HB65DAG. I've advised to try with eDSim, however I did not find the model in that. BR,Siva

I'm using a single L9963E and it works fine. However, I couldn't start daisy chain connection. When I consider BMS architectures in datasheet, all of them has L9963T transceiver to communicate with further IC. My custom PCB doesn't provide L9963T. So I have two question: 1- Do I really need a transceiver for USE MULTİPLE l9963E slaves ? 2- Can I use the transceiver on EVAL-L9963E-MCU for this purpoeses? Bear in mind, I'm using an external MCU, not built in SPC MCU chip. As I said, I can succesfully communicate single IC and I'm using a cable that has low capacitance. doesn't Lastly, according to datasheet the first node of chain can be one of these:"The daisy chain and dual access ring topologies are based on a chain of BMS evaluation boards. The chain first node can be an AEK-POW-BMSWTX, an AEK-POW-BMSNOTX or an AEK-POW-BMSWTX. The remaining nodes must be all AEK-POW-BMS63EN evaluation

Dear all, I received a LED PCB with 16 STCS2A constant current LED drivers in parallel, each powering 4 LEDs. Vcc=12V, for the PWM signal a 5V signal is used, which is supplied as follows: 24V PWM output of PLC is coupled to an optocoupler which is connected to a 5V power supply, the 5V output of this optocoupler is fed to the PWM input of the STCS2A drivers. When testing the system the 5V PWM signal shows high current values up to 1A, luckily this was protected with a glass fuse. What could be causing this problem? Happy to hear any idea's or useful things to test, the PCB is not my own production and I am trying to explain/solve the issue. Best,   

Hello,I’m designing a 1 kW converter using a push-pull topology with 24 V input and 400 V output. While doing so, I referred to the transformer design guidelines in your document AN2794. Unfortunately, I believe there are some inconsistencies or errors in a few of the equations. I would appreciate your assistance on the following points:The “RMS Input Current” value shown in Table 3 seems to be derived from Equation 9. However, shouldn’t the value be derived from Equations 6 or 8 instead?Regarding Equation 32, is it correct to assume that if the calculated Kg value in this equation is greater than the one calculated in Equation 31, then the selected core is

We are currently evaluating two ST IPM modules for our motor drive applications — STGIB8CH60TS-E and STGIB15CH60TS-L. Upon reviewing both datasheets, we noticed that although the two devices share the same functional pin descriptions where (STGIB8CH60TS-E have max current of 12A @ 25°C) and (STGIB15CH60TS-L  have a max current of 20A @ 25°C) but package types are different, the physical layout of certain pins, specifically Pin 19 (NV), differs between the two modules.We would appreciate your clarification on the following points:What is the technical reason for the difference in Pin 19 layout between the STGIB8CH60TS-E (Type E package) and STGIB15CH60TS-L (Type L package)?

Hello- I am working on simulating a resonant converter based on stgwa50ih65. Can you please share its PLECS model? I am unable to find it on its website. Thanks!