Part Number: LMR33630 Tool/software: WEBENCH® Design Tools So I designed a 5V supply using LMR33630ADDR, switching frequency is 400kHz. We expect the input voltage would be as high as 36V, since that is what the chip is rated. In testing, the chip would…
Hi Alex,
Could you recommend a set-up based on this information?
Since you have on the board are 24, 12, 5, 3.3VDC power rails, I would recommend to create a negative -5V supply rail from switched-capacitor voltage inverter, such as LM2776 , LM27761 , LM26…
Frequenz = 100K for now. later will be 400k Sorry i can not Change to LSF because my prototype PCB the foodprint may not fit. If there would be some comment in the datasheet that it don´t work with I2C then i would have used diffrent part. Testing…
Melbin,
My only questions/concerns with your schematics are regarding the components connected to the EN pin.
The 100k resistor between EN and GND should not be required as there is an internal 400k pull down resistor present on this pin when the EN…
Hi Venkatavel,
Can you short the ADC inputs together to a mid-supply voltage and see if you are getting the datasheet noise performance at various filter, data rate and gain settings? This will tell you if there is an issue with the ADC or if the noise…
Part Number: LM73605 Hi Team,
We are penetrating our LM73605 in my customer side. Customer need us to provide some thermal test data.
The PCB size is not a problem but the efficiency and thermal maybe problem for customer. So we penetrated our 400KHz…
Part Number: BQ25703A Other Parts Discussed in Thread: BQ24610 , BQ24773 I have some question about BQ25703A;
1- I am using 1 cell 18650 Li-Ion battery( max 4.2V) and my input voltage is 5V-21V. So, I will use it in buck mode every time. Is it possible…
Hi Issii-san,
For example, if you use a DCDC converter for 5V power supply, if DCDC frequency = 400k Hz, then on the output voltage may have 400kHz, <30mV ripple depending on your output cap/inductor.
If the DCDC loop is not stable or due to other…
Part Number: LP38798 Other Parts Discussed in Thread: TIDA-01371 , , LM317 , LMS8117A , LM1117 , TLV431 Hi,
I am trying to design a low noise, high voltage linear regulator. It is being used to clean up a switching boost converter operating at 400kHz. I've…
Katelyn-san, Thank you for your response and support. I conducted a short circuit test with evm to check the behavior of the soft saturation current pattern. I will write test conditions. And Attach the test situation. □Vin=19.5V,Vout=5V,Fsw=500kHz, L: FDSD0420…