Part Number: TPS40041 Hi Team
Let me ask about SCP.
Is the detection of SCP the ON resistance of the high side FET or low side FET?
I found in the datasheet, ”the SN0805016 uses the RDS(on) of the upper MOSFET switch as the current sensing,
…
Part Number: TPS40041 Hi Team
Regarding design hint in total gate charge
=>It is mentioned in datasheet that "The upper switch MOSFET’s gate charge should be no less than 60% of the synchronous rectifier’s gate charge...."
Q1). Is synchronous…
Part Number: TPS40041 Other Parts Discussed in Thread: TPS64203 , LM5169 , LM5164
Hi,
I'm in need of a synchronous (for high efficiency) DC-DC buck converter with a 120V (max) input and 3V output. Is it possible to use TPS40041 where VDD is initially…
Hello Na,
I am also having similar kind of problem with TPS40041 that COMP pin is showing rectangular pulse wave continuously which has frequency 450Hz and amplitude around 350mV. Gate drive waveform seen indicates that MOSFET are not getting switched…
Hi Joachim,
For compensation calculation, there is not only one correct answer. Different engineers may have his/her own way to design the compensation. The difference of using 68pF and 270pF for C3 is the location of the second compensation pole. Using…
Hi Joachim,
From your description, it's possible that the SW ringing cause the error in short-circuit trip point. Due to the small gate charge of the IRF7910, the turn-on speed of high-side FET is too fast. The fast di/dt on the parasitic inductance…
Other Parts Discussed in Thread: TPS40041 I have some issue which no start up at full load(5Vin 3.3Vo 20A), the circuit has two same FET in upper and bottom side.
The start up is ok at 50% load condition, but fails at full load, so I am wondering it…
Part Number: TPS62101 Other Parts Discussed in Thread: TPS62110 , TPS62097 , , TPS54610 , TPS40041 , TPS40057 I would like to run simulations with this part, but I cannot find it in PSPICE for TI.
As shown below, there is a jump from TPS62097 to TPS62110…
Hi,
I think that is a typo. Looking at the block diagram I do not see any DCM operation blocks.
Description from datasheet:
The TPS40040 (300 kHz) and TPS40041 (600 kHz) are fixed-frequency voltage-mode synchronous buck controllers. In operation…
Other Parts Discussed in Thread: TPS40041 HI,
in dm8168 platform,when i debug avs driver, voltage changed form 1.01v to 1.025v in noload;i think that voltage shoule decrease in noload,is right?
RDK is DVRRDK_04.01.00.02, environment is the same as…
