Part Number: BQ76952 Hi Team,
I am currently designing a BMS including the new BQ76952 chip. For external communication I am using a RS485-Transceiver with current consumption of approx. 50 mA. Additionally I need to supply a SAMD10 with approx. single…
Hi Cherry,
You are correct in that this application will need significant cooling to achieve this load current. Even a thermally saturated PCB design will be unlikely to keep this device cool enough, as thermally saturated PCB's can usually only provide…
Hi Shyam,
We have options for you. The TPS7A88 is good but we can do much better. Please review the switching frequency you are trying to filter and assess if the PSRR in these curves will work or if you need even more PSRR in your system. Let me know…
Hello Bhuvaneshwari,
I used an excel-based load switch tool available at the link below to calculate the conduction losses in the FETs. This tool does not allow for paralleling FETs but you can simply divide the current by the number of parallel FETs…
Hi Justin,
Please ask if you have any questions on this topic at all. If you would like me to help design your parallel LDOs, I can do that if you provide me with your system requirements:
Shown below is a representative schematic to parallel the TPS7A84A…
Hi Justin,
Yes, chip resistors are fine. I usually start at 0805 or 0603. Depending on your ambient temperature and the power dissipation, you may be able to select an 0402. You need to review the derating curve in the resistor datasheet to verify you…
Part Number: LM1085 Other Parts Discussed in Thread: TPS7A47 Hello,
I'm trying to convert 20V/5A SMPS power to 18~19V for my noise sensitive application. I couldn't find a good buck converter for my design.
I came across High-Current Low-Noise…
Hi Mark,
That inductor would only be used if you needed additional filtering after the LDO, and you also had a shunt capacitor in parallel with D4 and R14. This additional filtering would complement the PSRR specification of the LDO. 60Hz ripple is not…
Hi Wiebren,
There are new papers on parallel LDOs that I wanted to share with you:
A Scaleable, High-Current, Low-Noise Parallel LDO Reference Design
Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast Resistors
Parallel…
Kelsey, Yes, the 100uF capacitor is as you have shown it, across the output and parallel to the 1uF ceramic. I am concerned as the result of information in application notes such as AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors , which indicates…