Questions tagged [power-management]
The power-management tag has no usage guidance.
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Managing Solar Power, battery, and load for raspbery pi - designing power management system
So, I am working on a scientific instrument that measures air quality. It uses a raspberry pi with a couple of sensors. Essentially, this instrument is going to be deployed in an Urban area in a ...
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Why is the BQ25895 default system voltage 3.5V not 3.3V?
Why is the default system voltage 3.5V, not 3.3V even though, for example, the STM32 maximum voltage is 3.6V, but nominal is 3.3V?
BQ25895 datasheet.
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Why the peripheral devices won't completely power off
I'm working on a project that requires efficient power management, specifically the ability to shut off power to some peripheral circuits to save energy. My setup involves using a TPS65261 triple ...
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Programmable current-limit/e-fuse (+current monitoring?)
Short version:
How best to make either a current limiting circuit or an e-fuse (both options are fine to me) so that I can set the limit from software (and not through a fixed resistor as usual)?
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Power management for components on a PCB
I’m a begineer in PCB designing and I'm designing a circuit where I have 4 ICs connected in parallel. I have used JW5068A IC which have output voltage of 5 V and max current of 8 A for whole circuit.
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Trying to understand IP5306 battery manager
The manufacturers datasheet of the IP5306 Battery manager IC doesn't explicitly explain how the charger works. I would like to know from which pin of the IC goes out the current to charge the battery ...
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What is an efficient way for distributing equal power to multiple audio amps?
I'm working on an audio system prototype that requires cables passing through active speakers in series. As cables will have different lengths, I'm counting on voltage drops along the way. Is there an ...
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Over voltage and backflow protection
I'm drawing up a MCU based device for my bike to control light etc. The power comes from the dynamo, and at higher speeds it will produce a lot more voltage than the circuit can handle, so protection ...
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How can overproduction of electric power be a problem to the grid? [closed]
Recently, in Brazil, we had a major shutdown of the electrical grid of the entire country (wich is mostly interconnected across the majority of the states). After official investigation, the culprit ...
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Gate-source connected MOSFETs for voltage division
Currently, I am engaged in the design of a Thermal Shutdown circuit for an LDO regulator. In this endeavor, I have obtained a circuit schematic from a senior colleague, which utilizes three NMOS ...
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Powering a microcontroller during sleep periods
In general, what is the best practice for powering a battery-powered uC during its sleep periods? I have a uC driven system that does a bunch of stuff for perhaps 10% of the time, and spends the rest ...
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A circuit which charges and uses a lithium ion battery
I am designing a circuit which will utilise a lithium ion battery. The circuit would ideally be plugged into a power source the majority of the time, butI would also like it to be portable. I have ...
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Supplementing USB power with batteries
I am designing a custom USB hub for a project that will be primarily connected to a Surface Pro or laptop. One of the peripherals that I am using is a camera that consumes quite a bit of power from ...
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How to connect in serial two 2S Battery pack but charge them seperately?
I want to create a circuit that has input 12V DC and uses this voltage both charging two 2S (7.4V Li-Ion without balancing wire with BMS Circuit on the pack) batteries and at the same time supplying ...
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How to integrate action variables of logic type into the split range control structure?
I have following control task. I have to limit a current drawn from a source of power in a grid where I have following power consumptions:
battery charger
variable frequency drive
aux power ...
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