Part Number: PMP21697 Why does the Buck Synchronous Rectifier switch ( Q3 ) not have a parallel FET but all the other switches are parallelized? Also, what's the purpose of the R19 & C19 and R20 & C20 strings?
Part Number: LM5060 Other Parts Discussed in Thread: LM5121 , LM5122 , LM74502-Q1 , , LM74502 Hi Team,
My customer is considering two concepts with a boost for 18~30VIN to 32~53VOUT (500W).
1. LM5121 (disconnection switch control is integrated)
2. LM5122 …
Other Parts Discussed in Thread: MOTOR-DRIVE-FET-LOSS-CALC Hello Ti,
I found this MOTOR-DRIVE-FET-LOSS-CALC tool from Ti web site which is very useful.
for a low side MOSFET switching loss only considered for the electrical frequency of the motor and neglected…
Hi Amaresh,
Thank you for your patience.
While it would be possible to forgo the bootstrap capacitor if you are using a P-FET on the high side of the gate driver, it is not recommended as the device was designed with the intention of being used with 2…
Part Number: CSD88599Q5DC Other Parts Discussed in Thread: CSD88584Q5DC I discovered this spreadsheet recently and am trying to use it. I'm interested in the CSD88599 but it doesn't seem to give that as an option when I select FET Config, it only gives…
Part Number: LM51231-Q1 Tool/software: Hello,
I am trying to calculate losses for the synchronous MOSFET. In table 2-2, the body diode conduction loss uses a term of (Vload*Fsw)/2. This results in a very high calculated loss. I think the voltage should…
Part Number: LP8866-Q1 Hello,
Could you please provide a brief guideline of how to select the boost FET? What critaria will be applicable to the boost FET for "VGD/(RDS_ON + total resistance to gate input of SW FET) must not be higher than 2.5 A"?…
Part Number: LM5143DESIGN-CALC Other Parts Discussed in Thread: LM5143-Q1 , LM5145 Hi team,
here is two confusing items of LM5143q design:
1.there is a descripton as following in the datasheet what seems not to make sense, actually it suppose that there…
Part Number: LM5140ADESIGN-CALC Other Parts Discussed in Thread: LM5143-Q1 , LM5140-Q1 Hi Experts,
the LM5140ADESIGN-CALC seem to always recommend the same FET. Even when Vin is exceeding the max voltage of the IPC50N04. Is there an issue or is this part…
Part Number: DRV8316C-Q1 Tool/software: Hi,
I want to estimate losses while using the BLDC driver mentioned.I found this excel sheet for calculation.Do we have an application note to understand the equations provided in this excel sheet
www.ti.com/.…
