Hi Richard,
Many thanks for the help.
I have since tried another MOSFET type with a much faster body diode recovery time of 50nS (CSD18537NKCS) but unfortunately the heating problem has persisted. This is with the gate and source connected as before.…
Part Number: LM5109B Other Parts Discussed in Thread: CSD18537NKCS I'm using three IC to drive three half bridges to control and power the BLDC. But everytime the driver circuit was connect to the motor and microcontroller, the ICs and FETs will be broken…
Part Number: UCC27211A-Q1 Other Parts Discussed in Thread: CSD18537NKCS , , UCC27282 Hi,
I'm using UCC27211A-Q1 to drive two N-channel MOSFETs (CSD18537NKCS) synchronously. I want to reduce the ripples for the switching waveform. Please find the attached…
Hello William,
What is needed here is a 'Transient Thermal Impedance' chart, where the x-axis is time in seconds and the y-axis is Effective Zθ(J-C), for this particular package.
While this 'Transient Thermal Impedance' chart is a fairly…
Hello Clinton,
I'm still trying to fix this issue. Yes. If I add a fan blowing directly to the board the current eventually settle out.
I put my design requirements on Webench with a 3.2A output current(tried with 3.4 but it didn't find a suitable…
Hello, thank you for your prompt reply.
We are also considering to use CSD18537NKCS with TPS40170.
On this case, I assume that the required RILIM would be;
RILIM = IOC*RDS(on)/IILIM = 3A*14mohm/9.0uA = 9.3kohm
Please let me clarify whether my understanding…
