Power management

LD1117 Input & Output Capacitor requirements

I am currently designing a circuit using the LD1117S50CTR.In the recommended circuit in the datasheet, Cin = 100 nF and Cout = 10 µF are specified.For an LDO, I believe Cout is critical, while Cin is not as important.Therefore, I am considering using...

Example Code for VNF1048F

Hello ST Community, i have problems to get the VNF1048F chip to run. It goes every time to the fault state and can not find out, why this problem occurs.The documentation for this chip is not really good and there is not sample application (Source Co...

L4946A gives good PFC in discontinuous mode?

Hi,We wish to do a Boost PFC with L4986A and a 30uH inductor.Power is 2200W and Mains is 85-265VAC.When the mains is at 240VAC, the inductor current would be discontinuous for some 80% of the mains half cycle.Is this OK?Will the L4986A be able to c...

VNF1048F & VNF1248F SPI Communication without VS

Hello, We are developing a design around VNF1048F & VNF1248F products. We are considering a multichannel design with different output settings. In a multichannel design, naturally we are expecting to have control and monitoring capability of individ...

VNF1248F & VNF1048F Functional Safety

Hello,We are developing a design around VNF1048F & VNF1248F products. From the other community posts, we learned that VNF1048F has ASIL - B for functional safety rating.We would like to confirm this information, and we also would like to know if VNF1...

L6494LDTR

Hello I am using the L6494(14PIN) as a driver for a high and low side FET in a half bridge arrangement. My DC volts can be anything from 120Vdc to 220Vdc. and current up to 17AIs there anyway to determine the breakdown mechanism if I do not momentari...

EVLVIPGAN65DF radiated EMI

EVLVIPGAN65DF application note states that the provided reference design is compliant with IEC55022 Class B conducted EMI. How about radiated EMI? Is there any measurement in this regard?

Resolved! L6982CDR application problem.

Hi,We're encountering an issue with the L6982CDR buck converter in our application. Here's the detailed scenario: Configuation: We're using it to convert a 24V input to a 5V output to power the board. Load: The 5V output supplies a load current of ap...