Hello,
Thank you for your thermal question.
Here is the equation:
(8V-5V) x 1A = 3W, (3W x 32.5 degC/W) + 40 C = 137.5 C, where 32.5 degC/W is the thetaJA datasheet value.
This device goes into thermal shutdown at 170 deg C, so there should not be a concern…
hello nikhil
I check the API appMemGetDmaBufFd() in app_mem_qnx.c and find the fd is a physical address actually:
physAddr = g_app_mem_bufs [ i ]. buf . phy_addr ;
so I just need transfer the fd to another process and use it as demo right?
Best…
Hi Tao, Thank you for your reply.
So, does auto PFM mode mean that it's PFM when the output is 100mA, and PWM when the output is 1A? In other words, do these curves show the transition from PFM to PWM to PFM?
I'm checking whether the transition from…
Part Number: LM5020 Tool/software: Hi,
Vin=36-75V
Vout1=12V
Iout1=1A
Vout2=12V
Iout2=3A
Fsw=100KHz
We are using the LM5020 as a flyback converter. The MOSFET seems to be trying to turn on during the off period, and the voltage across the drain-to-source…
Part Number: UCC28951-Q1 Other Parts Discussed in Thread: UCC28951
Tool/software:
Hello Mike,
Two output windings are connected in series. Output is regulated to 26V.
Below waveform is before it enters regulation, voltage is around 300VDC, load current…
Hi Miguel,
Miguel Aguirre said: We are working on an application were the power line must be a square or sinusoidal wave between 50KHz to 100KHz (under development yet)
The THVD8000 has a bandpass filter on its receiver, so if you do use the 5MHz carrier…
Thanks for your support in your answer.
The Qg of the FET I used is 80nC and I connected 2 of them in parallel. I calculated the Idrive as follows.
Idrive_source = 80nC * 2 in parallel / 200nS = 0.8A Idrive_sink = 80nC * 2 in parallel / 100nS = 1.6A
I…
Part Number: BQ25720
Tool/software:
As we know，BQ25720 supports both IinDPM and Two-Level Adapter Input Current Limit(Peak Power Mode)，so what‘s the difference and relationship between them？
If the IinDPM is set to 1A，and the ILIM1 in the feature…
Part Number: CC2340R2 Tool/software: Hi Team,
We are creating a project for the LE core complete design using QDID 201833, which is listed in SIG by Texas Instruments Incorporated. The QDID 201833 covers the LL and GATT layers, and product owner has…
28V is the minimum input voltage to ensure a monotonic startup at heavy loads (DC at 0.9 instead of 0.99 is the major limiting factor). Does it mean DCDC is powered up with heavy load, isn't it? If so, this is not the case because being variable, it always…
