Power management

How to calculate the right Capacitor for Qi charging coil?

Dear Forum,currently I'm implementing a design with the STWLC33 and in the datasheet is a reference design for a coil with L = 8 uH and a C = 3.9 nF. I calculated the resulting resonance frequency and got about f = 90 kHz (with Cser and Cpar). Shoul...

Overcurrent protection function of L6470h

Hi,I designed a board with ​L6470h and tested it. I am confused with the Overcurrent protection function. It is shown that the capability of L6470h is 7.0 A peak current (3.0 A r.m.s.), but the MAX overcurrent threshold can be set to 6A in register...

How to use STEVAL-ISB044V1 in EPP mode (15 watt ) with input voltage 5V only and no D+ or D- provided

STEVAL-IPFC01V1 capacitor bank problem

Dear all,we are evaluating STEVAL-IPFC01V1 board which is a PFC converter and we are experiences problems when we change capacitor bank to larger value. At default board is equipped with4x470uF, which we later changed to 4x1000uF plus 4x470uF. If we ...

STPM34 Minimum measurement time for U/I RMS values

Hi.I have a load switched by Triac, on which I perform a measurement with STPM34.I need to perform a very quick U/I RMS measurement (load is switched on/off)RMS computation is said to be performed on a 200ms window.But it seems I need to perform a ùe...

Can anyone please confirm ESD(HBM) ratings, MSL and Terminal finish material for LM217MDT & LM317MDT Parts?

how to collect the parameters of the motor (the speed at which the motor is running, the current flowing in the motor) using steval esc001v1. Thanks in advance.

How can i modify torque/flux Kp and Ki value to let the value of Iq and Ip to be stable

Due to i want to produce the max torque value, so i set Iq reference to be nominal current value and Id to be zero, but after checking the value by MC_GetIqdMotor1() ==> to get the current Iq and Id valueMC_GetIqdrefMotor1() ==> to get the reference ...