Questions tagged [charger]
A device which controls the voltage and current being delivered to a capacitor or battery.
1,022 questions
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Making a USB battery charger + boost converter
I have a problem with this circuit. This is already my 3rd iteration of the design, this time I nailed the boost part of it, but now I am having issues with the charger bit (TP4057+DW01+FS8205A).
It ...
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Leakage path and UVLO threshold limits in linear charger IC
I have this Battery charger IC - MCP73831
On page 13, UVLO section, it reads, "*The UVLO circuit places the device in Shutdown mode
if the input supply falls to within +50 mV of the battery
...
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TP4056 + back-to-back P-MOSFETs as power-path / battery backup – is this configuration correct?
I am designing a small battery-powered device and would like a review of my power backup / load sharing circuit.
Requirements
USB (5 V) is the main power source when connected
A single-cell Li-ion ...
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How to isolate a Li-ion battery from charging pads
I am sitting on a small project which at first glance seemed easy, but I just can't solve it.
As a general background, I have a LIR1220 coin battery that is charged via charging pads with a 4.2 V and ...
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MCP73812 is not charging the battery in this power-path design
Here is a 'powerpath' design that is intended to run a pair of RGB LEDs, either from a Li-ion battery or from a 5 V USB-C source.
I based the design on a reference circuit I found online. I calculated ...
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How to use either USB voltage or Li-ion battery voltage on an Adafruit Micro-Lipon Charger
I have a project that I'm powering primarily via a Li-ion battery pack via an Adafruit MicroLipo charger. I added a connector to it so I can run the output of the charger to my microcontroller, charge ...
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Battery Charger IC Power Path Management control
In this Battery Charger IC, there is the power path for the system load (OUT) and a path for the battery charging (VBAT).
When the CE pin is low, on page 16, we can see that the path from the input ...
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Li-ion charger TP4056 protections
The attached picture is the Li-ion charger with TP4056 IC.
It has:
Li-ion battery protection for over-charge and over-discharge
USB-C protection for over-voltage and over-current
Cable orientation ...
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Parallel charging of NiMH cells with balancer [closed]
How to charge a NiMH battery on parallel not on series?
Because I got a battery tray which is on series...
Now I printed a battery tray for parallel charging and I want to add a balancer... But I don'...
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MPPT charger reverse blocking diode
For a small project I'm designing a PCB with the CN3791 (pseudo) MPPT charger and a small panel of 6V, 1W.
This is the typical circuit, from the CN3791 datasheet:
Would it be ok to replace D1 (to ...
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Linear charger MCP73842-8.4 P-FET selection
I want to use the MCP73842 as a linear charging regulator for a 2S Li-ion battery (8.4 V). In the manufacturer’s application note, they use the IRLMS6702 MOSFET, which is no longer available. MOSFETs ...
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Effect of low-side Rsense shifting battery ground for MCP73842 charger and MAX17205 fuel gauge
I am designing a board powered from a 9 V DC supply, with a 2S lithium battery as backup.
The battery is charged by an MCP73842-8.4, and the fuel gauge IC is a MAX17205G+T.
The fuel gauge requires an ...
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Request for Review: DPR Type-C Power Bank Circuit
This is the first circuit I have ever designed.
The circuit is altered from the 'Typical Application' of the IP5310 datasheet to allow the type-C port behave as both Input and Output.
I plan on PCB ...
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Implementing Temperature Cutoff for Lead-Acid Charging with BQ24450
I'm designing a circuit to charge a 12V lead-acid battery using the BQ24450 IC.
Key charging parameters are:
Float voltage: ~13.8 V
Boost voltage: ~14.7 V
Maximum charge current: ~300 mA
Pre-charge ...
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Powering 3 charge controllers from 1 solar panel
I need to charge three car batteries with slightly different specifications from a single solar panel.
Since I don't think I can connect the batteries together, I tried making the following wiring ...
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