Power management

Hello,I looked through the data sheets of multiple efuses and cannot really find reliable values of Iq (quiescent current) values (somtimes only leakage for certain pins is given). Even the product selector does not show any listings of Iq. Every other vendor (TI, AD, Onsemi, etc.) offers that. Or is it that I just couldn't find it?My requirements are:- max 10V input- lowest Iq possible in always on or when disabled- current limit: > 1.2AThank you.Best,Andy

Hello Team    I am looking at how i can buy the reference for evaluation board STEVAL-ISV002V1  or the and the gerber files if possible.  any assistance would be appreciated.    regards joshua   

I am in the process of designing a new grid tie based solar inverter.i am designing it for a load of 1650w approx.Please share some technical documents and reference designs to start my design mainly from STMicroelectronics.

Hello Team,I am planning to use the STDRIVE101 to develop an ESC, and I would like to clarify something before proceeding.Does the STDRIVE101 introduce any jitter in the PWM output? If so, what is the typical jitter value?Thank you for your help.Best regards,Aji

Hi there,I downloaded the gerber file “STDES-2KW5CH48V GERBER ” and found that there is obvious wrong with copper pouring clearance. For example the clearance between main lines and ground is less than 15 mil.

InSTGAP3SXSdatasheet is funny table , input -> output state, the most important thing for a driver - but wrong:btw : 1. Do not care.   -- is perfect here.  

In my project I use a L9826, 6 Outputs are used conventionally 2 outputs are not used. In the same project I need to have 2 digital inputs (SPI) and I would like to know if I could use the two unused outputs of the L9826 as HCMOS inputs via the Fault status register; would this type of unconventional use be possible? Thanks

We designed a buck converter with (300-800) input DC voltage and the output voltage is 24V.  The max load current is 150mA.  We noticed two issues here:1. The device fails when we try to measure VDD pin voltage with reference to Power Ground (DC input ground).  Though the VDD voltage is with reference to device ground (pins 1,2,3,4,6), but why it should fail when we use power ground as a reference with a Digital Multimeter.  This has happened thrice and in all the cases, the device failed silently (no sounds, no physical damage etc.,).  All this happened at 150V DC input voltage itself.2. In the second case, the device failed at 800V DC input when we tried to connect 100mA resistive load.  No probe is connected anywhere in the circuit.  However, we used the same compensation network as given in ST AN 5380 (15V, 1.5W buck converter and could not arrive at the values for 24V output voltage.  If the compensation network is a problem

 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.Lastly, as I said, I can succesfully communicate single IC and I'm using a cable that has low capacitance. 

Hi everyone,we're currently using the L6227Q as a driver for 2 DC motors. Everything seemed to work fine. We put on 3,3V on the VREF_x inputs. Enable the IC with EN_x to high and apply a PWM (100 kHz) at the IN1_x and IN2_x. With the PWM (depending on rotation direction: one PWM signal, the other is low) we can influence the speed of the motors, which works fine.We want to use the shunt as an input for current measurement, so there is an op-amp with some filtering ending in ADC of the MCU.The DC motors have huge filters, recommended by the motor supplier to extend life of the motors to a maximum.We recnognized, the measured current has less to do with the applied PWM and the current measured after the filtering (current input into motor). With this I'm afraid, if the driver is used in the right way?Is it ok, to apply a 100 kHz PWM to INy_x? Or should we use another driver IC like L6226Q (which I found in another thread here in the forum) without R_

Hi, Team   We are facing issues with test process performed at ICT test station. We are testing driving current to detect Zener Clamp diode 8.2V, the units fail with 2.64688 volts, but this line is connected to comparator TS339I pin 5 that is not power up. When disconnect the pint 5 of this comparator, TS339I, our Zener Diode start works and the voltage 8.2V is present.     Our concern is related with this TS339I that something is affecting Zener's test process when the V+/V- of the comparator are absent, probably the current used for the test, partially is going into the comparator. Do you have information about this behavior and recommendations when this device is tested? Or are there some test recommendations or critical aspects that need to be careful when is under test for these comparators?

Hi all.I would like to use the VN5T016AH-E high-side driver and I have some questions.*Are there 8V in the CS pin under fault conditions?*Can it measure max 4.2A with a K about 4240? Why do you specify 4V in the datasheet without knowing the value of the Rsense resistor?*If I don't need latch-off option, is there an autorestart mode after a fault condition?Many thanks. 

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Hey,so I was trying to use the VND7020AJ as a driver to loads,and wanted to power the load to 7.2V while powering the high side driver with 12V.Im using a stm32f103rb,and using an outpin pin timer to control the pulse width to the input pin on the driver.It works fine when not connecting the driver to the load,but when I connect it jumps to 12V.Is it possible to pulse width the output or not?Is there a specific frequency that I am supposed to use?The input pin is still under 60%pulse(around 1.9V).Ive tried modifying the pulse while connected to the load but it didnt change anthing on the output.The code is pretty simple,Ive only set the input pin and controlled it:__HAL_TIM_SET_COMPARE(&htim3,TIM_CHANNEL_3,3000);Clock(8Mhz)Prescaler(8-1)CounterPeriod(10000-1) 

The L9369 is dual channel solution for two rear wheels brakes actuators, but we need only 1 channel for one motor.  Is there special design to combine two channels to drive one motor? If there is single channel EPB driver chip similar to L9369, L9369S? could you share its datasheet? Thanks!

Hi I have some queries regarding the current measurement function for L9963E. @AScha.3 1) Can we change the gain of current sense or is it a fixed gain and what is the gain error ?2) What is the % overcurrent measurement error ? Can we set the overcurrent limits for both positive and negative values and can we change the limits during the battery pack operation dynamically (i.e during charge and discharge) ?3) In the datasheet it says in 4.6.1 "In the range of [-1500 A, -600 A) and (+600 A, +1500 A], the accuracy of ±5‰ is chosen ". so the current measurement error is 5% ?

Looking for a spice model for STN83003. Any help?

Hi,The part# LD56020M180R Marking is 5618, is it correct? because i unable find the marking info from datasheet for this part, please see the photos of product below, thanks.  

Hello everyone, I am working on a wireless charger based on the STEVAL-WBC86TX, but we cannot find availability for the transmitter coil reference 760308111 among its components. We would like to know which other references would be compatible with the STWBC86 chip. Thank you for your attention.

Hello, I would like to use the converter SPV1050 in a new product of my company but I have some doubts. First of all, the application I need is to feed a harvesting device, which includes a supercapacitor of 5F and 5V. So, I need an output from the SPV1050 to feed my electronic device, let's say I just need a positive pin and negative pin with an output of 5V. Where I should connect the positive pin of my electronic? In BAT or STORE pin?Another question is how I can configure the output to 5V.If you could tell me the configuration I need to perform if I use the STEVAL-ISV019V1I would be very gratefull. Thank you.

Hello,We are using the STEVAL-L99615C board and encountered an issue while testing the Demo1, Demo2, and Demo3 examples. After running the demos, the board became unresponsive. We suspect the issue might be related to the FUSE mechanism described in the L9961 datasheet.According to the datasheet:The FUSE pre-driver can activate under certain permanent failure conditions, such as severe undervoltage (UV), overvoltage (OV), overcurrent, or persistent short circuits.Once triggered, the FUSE pre-driver disconnects the battery pack for safety. Recovery involves issuing commands like GO2SHIP or GO2SLP through I2C.Before performing any tests, we want to confirm the proper steps and conditions to safely diagnose and recover the board.Here are our questions:Reading the FUSE Status Registers:Which specific registers or flags should we read via I2C to confirm if the FUSE mechanism has been triggered?Are there additional diagnostic reg

I am working with the L9961 IC for battery management, and I have a question regarding how the charging (CHG) and discharging (DCHG) FETs are turned on or off when faults occur.From the datasheet, I understand that:The FAULTN pin is used to signal fault conditions.Specific faults, such as cell undervoltage or overvoltage, cause the IC to disable either the CHG or DCHG outputs.The IC can also latch fault conditions, and the FETs can be controlled externally.My question is:When a fault condition occurs, how exactly does the L9961 decide to turn the CHG and DCHG FETs off?Are there specific registers or internal logic that determine this behavior, or is this purely based on the FAULTN pin state?How can the MCU (or external controller) override or reset these FET states after the fault condition is resolved?

Please confirm, for enable deassertion by long press, PB need to be pressed or both PB and SR needs to be pressed. The datasheets mention two things, Note: I need to achieve EN deassertion

I am planning to use the STM6601 in my design, which involves powering on with a single press and powering off with a long press. However, my device only has one button. I want to implement a long press to turn off the device, but based on the diagram below, it seems that both SR and PB need to be pressed simultaneously for the EN pin to deassert. 1. Here please confirm whether can I connect both SR and PB to same one button and achieve power on by single press and power off by long press?2. SR needs to be high when P

While programming the STPMIC1A with the USBSTICK – I2C to USB interface, I logged the I2C communication with an oscilloscope. This showed a command "Write, 66, DC 0C" that was send to the STPMIC just before the command to write the shadow registers to the NVM ("Write, 66, B9 01").Exact logged I2C communication:Write, 66, F8 EC 1A C2 08 FA 00 0E 33,Write, 66, DC 0C,Write, 66, B9 01,However I was not able to found such command "DC 0C" on the STPMIC documentation.Could you please explain what is this command used for? Is this command necessary when we are programming the STPMIC via the microprocessor in the application?Thank you very much.