Power management

Do you have any advice which voltage regulator should I use?

Hi to All,I want to make a pcb card which which work with 3.6V. I wil use a voltage regulator to drop down voltage from 10V-17V batteries to 3.3V. Do you have any advice which voltage regulator should I use. I am trying to make a system with lowest p...

MTBF of STPM32

Doubts SPV1020, power optimizer

Hello, I am studying DC-DC converters, power optimizers for grid-connected PV.I saw some work with the SPV1020, but it seems to be discontinued. Do you know why? Is there a new version?I would also be grateful if I indicated any evaluation module, th...

Is there a way to default the STSpin840 motor driver to completely shut down the motor from turning upon power up?

I am currently using the X-NUCLEO-IHM15A1 Shield with the NUCLEO_F401RE MCU board to evaluate the use of the STSpin840 Motor driver using a single 12VDC motor. During the programming and debug process the motor will automatically start turning. Beca...

What do I connect pin 2 (VREFB) of the STSPIN840 to when I want to run the two outputs in parallel for higher current capability?

I am currently designing a PCB that will control a single motor using the STSPIN840 (X-NUCLEO-IHM15A1 Shield). The datasheet is pretty good about explaining how to connect things if you want to run the outputs in parallel mode but it neglets to tell...

How to use the L6472 for step mode control using the STCK pin

We are trying to set up a L6472 for step mode control using the STCK pin with limited success. Here is our setup of the registers.CONFIG: 0xFE80Status: 0xFE02STEP_MODE: 0x1CWe are trying to drive the STCK pin with 3.3V LVTTL from a PIC32 at 1250 Hz.T...

Can I replace 5 ohm NTC from circuit of application note AN2097 ?

I am trying to replicate the circuit given in application note AN2097 which is a 10W SMPS at 12V.I am stuck 5 ohm NTC used in the circuit. Can you tell me the wattage of it. It is very expensive also, please tell me any way to replace it. Please find...

Anybody knows about the control of BLDC motor using two hall sensors and how to find out the exact mechanical angle between the hall sensors

We know that. when using three hall sensors, the 3 Hall sensors should be spaced across the printed-circuit board (PCB) so that they are 120° electrical degrees apart. From the center of the motor axis, the number of degrees each sensor should be spa...

DEAR Sir/Mam I have purchased your X-NUCLEO-IHM07M1Three-phase brushless DC motor driver expansion board based on L6230 and i am driving this by using lpc2138 evaluation board. Can you please tell me that how to drive this card.

DEAR Sir/MamI have purchased your X-NUCLEO-IHM07M1Three-phase brushless DC motor driver expansion board based on L6230 and i am driving this by using lpc2138 evaluation board.Now the problem is that i can't find any input data for driving this motor ...

L7987L - negative (or inverting) buck-boost schematic example

In the datasheet of the L7987L there is an application schematic for a negative converter (p36), here the VCC is connected to VIN with a 10 Ohm resistor and a capacitor to the generated negative rail (I guess is to filter the power for the low power ...