Power management

Discuss power management solutions. Ask questions and find answers on voltage configurations, short circuit protection, and programming.

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How to calibration fomula of CT for STPM34 ?

Hi All; I would like to calculate CT. I have formula below.I factor = VREF / (AI * CALIB_I * DPOW * KSI * KINT )   VREF = 1.18 from datasheet AI = 16 from datasheet CALIB_i = 0.875 from datasheet DPOW = removed KSI = Rshut = 0.05 ohm when I calcurat...

Gz by Senior
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How to set load capacity for L6470?

I m using L6470 which is working fine without load, but when load is applied the motor stuck. Which parameter i should consider for it?also how to reduce stepper motor noise?My current configuration are like thiswrite_buffer[0]=CMD_SETPARAM |REG_MAX_...

PDhak by Associate
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Can I have the reliability data for the part BU931P?

Hi all, I'm currently using the ST micro BU931P. I need reliability information on this part, life tests, thermal cycles, HAST, etc, the ESD level, MSL level, FIT and MTBF. Can you share these information with me?Thanks very much in advance for your ...

AEvar by Associate
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Selecting SPV1050 for energy harvesting from solar cell

Hi,This is John from Qmax Systems, We are designing a product - energy harvesting from solar cell. Our application requires a boost converter to convert 0.5V to 4.2V with an output current of min 100 mA. Do you think SPV1050 will support this applica...

JFran.18 by Associate
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How to adjust driving current with STSPIN820

I use STSPIN820 to drive the stepper motor, which is noisy when it runs at low speed. I tried to reduce the supply voltage and the noise problem improved, but still could not meet the use scenario, although I reduced the voltage to the chip allowable...

JShi by Associate
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Troubleshooting with spv1040 panel shunting

Hi!We developed a device using the SPV1040 as a DC-DC converter connected to the PV panel (5V MPPT 0.150A sc)When the no-load voltage of the panel is less than 2 volts, but the same panel when connected to the converter produces a much lower voltage....

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Why do the output of the bridge rectifier shoot above 1KV when an inductor is placed as a filter in series with it?

Hi,I am designing an inverter using ST's application note AN2794.I have customized the application note which was designed for 1KW power to 1.65KW.The problem i am facing now is that when i probe the output of the bridge rectifier placed at the outpu...

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Amal Babu by Associate III
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