Power management

Acoustic Noise L6599

I absolutely do not understand under what conditions and for what reason sometimes during operation of the LLC converter, the power transformer emits audible high-frequency acoustic noise. Some instances work fine, but some make a good audible noise....

SPV1040充电问题，根�?�手册推�??电路图，我画了如下电路测试，在25度晴朗天气的大太阳天，我接入5V太阳能�?�测试，（图中�?焊接的元件用NC表示）然而�?管则么调节R4和R8的阻值，输出电压始终是4.7-5V左�?�，而并�?是计算的4.2V，请问这到底是什么问题，到底是电路出了问题还是怎么回事，麻烦帮解决下，谢谢

is the STSPIN32F0A suitable as a gimbal motor controller without hall sensors(or other sensors)

Im currently looking for a more intelligent replacement driver for our robotics wheels. Currently we use very small BLDC "WITHOUT sensors and it will stay that way" We have typically controlled the BLDC through a "PWM Table array" using 3 PWM chann...

Oscillation in STW88N65M5 transistors

We are testing a 300kW inverter prototype, consisting of 12 modules of 25kW, connected in 3 phases of 4 modules in parallel.Each 25KW module has a full-bridge exit stage of 8 STE88N60M5 transistors, in parallel to 2. The sineworm modulation of the PW...

How to use st flash bootloader for stnrg ic ?

Hi all,I want to configure option byte of stnrgpf01 ic. How do i configure it with st flash loader ?Best Regards.Ferudun..

I am using your BTA24-600BW triac to control a 1.25HP AC motor. Unfortunately, I am unable to maintain enough torque when a load is applied to the motor. Are my design issues due to triac or because motor is on A1 of triac and not A2?

Problem in stm32f103c8t6 while running motor on load condition

Hi friends, I am driving bldc motor using stm32f103c8t6. And i measure the rpm of the motor using the hall sensor pins. While running motor on no load condition....Motor runs good .Rpm is also measured and i monitored in keil debugging session, which...

Wireless transmitter controller IC

Hello,we are building a wireless charger for smart phone charging 5/10W, suggest the suitable Qi transmitter controller.

STBC03: Can the BATMS_EN pin miss getting asserted, or get locked in 'Off' mode?

We're seeing an odd behavior in the STBC03. We keep BATMS_EN asserted at all times, as we are not worried about wasting that little bit of power. Once in a while (1%?), on power up, BATMS_EN is high, the LDO is outputting 3V, the battery is ~4V, but ...

L6566B reset indicating shorted

We designed an AC / DC power supply with the L6566B with the help of the eDesign tool. We manufacture a 5-piece pilot lot and are encountering a problem with two parts that do not start the L6566B.Taking some measurements we realize that at pin 5 (VC...