The uninterruptible power supply module with battery charging and protection, for building smart devices with power paths' redundancy
Designed by IoT-devices, LLC in United States of America
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Purpose and compatibility PS4IoT is an uninterruptible power supply module with battery charging and protection, for building smart devices with power paths' redundancy, with 3.0 to 6 volts and 3V3, …
Read More…PS4IoT is an uninterruptible power supply module with battery charging and protection, for building smart devices with power paths' redundancy, with 3.0 to 6 volts and 3V3, 5V, or 12V output voltages, with total power up to 5 watts. The module is designed for use in electronic devices based on any microcontroller platform, such as ESP8266, ESP32, Arduino, STM32, and derivative boards (ESP12.OLED, NodeMCU, etc.) as an autonomous or software-controlled power supply unit.
This tiny module may surprise you with many important and interesting functions. PS4IoT_V1 with basic settings provides:
The module can provide the following profiles for autonomous and controlled use as part of a smart device:
Online Uninterruptible Power Supply Unit module
As you can see from our "formula", you can simultaneously power one or more payloads, connect a controller with any functionality to the module according to your design idea - in other words, you can create the most demanding portable and stationary devices using the PS4IoT_V1 module. This module is a versatile component that will provide reliable power, observability, and controllability for your DIY or even commercial product.
PS4IoT acts as an intelligent intermediary between the load and all available power sources. This power supply automatically protects the device and the battery, providing consumers with the ease and simplicity of using the end device in a way that is only found in high-quality and high-tech smartphones.
| Automatic mode | Managed by MCU mode | |
|---|---|---|
| Battery-free operation | Yes, auto | Yes, auto |
| Starting with a deeply discharged battery | Yes, auto | Yes, auto |
| Simultaneous battery charging and power supply of loads | Yes, auto | Yes, auto |
| Automatic battery charging | Yes, auto | Yes, auto. Or by means of the controller via CEset |
| Choice of power supply paths | Yes, auto | Yes, auto |
| Battery charging enable and disable control | Yes, with a jumper | Yes, by means of the controller via CEset |
| Disabling the built-in status indicators | Yes, with a jumper | Caution! It is forbidden to switch on the status LEDs in managed by MCU mode |
| Electronic main switch | Mechanical, manual only | Mechanical, manual only |
| External power failure detection | Yes, with built-in indicators | Yes, by means of the controller using the status signals CC, CP, CEset.1 |
| Automatic mode | Managed by MCU mode | |
|---|---|---|
| Battery overheating protection | No | Possible by controller means via an optional I2C, NTC, or 1-Wire battery thermometer using the 4-pin AUX pass-through interface |
| Deep discharge protection | Yes, auto when below 2.3V | Yes, auto. Or by monitoring the battery voltage level via the ADC of the controller and switching to deep sleep mode |
| Battery overcharge protection | Yes, auto when exceeding 4.2V | Yes, auto. Or controlled by the controller |
| Battery charge termination | Yes, auto | Yes, auto. Or controlled by the controller |
| Temperature compensation feedback of the charging current regulator | Yes, auto | Yes, auto |
PS4IoT_V1 has a number of signal lines that allow the main controller to monitor the charging process status, temperature, and battery voltage programmatically.
For example, if a mismatch is detected, such as exceeding the charging time or battery temperature, the controller can programmatically stop or restore the charging process.
In addition, these mechanisms in combination with the sleep mode are reasonable to use in the charge/discharge control software algorithm to extend battery life.
Note. The PS4IoT_V1 version of the module does not support connecting an NTC battery thermistor directly to the charging controller. Therefore, temperature monitoring can be implemented by connecting an additional temperature sensor to the main controller using I2C bus or other interfaces such as 1-Wire, SPI, NTC-thermistor, etc. Thus, through the Charge Enable signal (see CEset.2) the controller can prohibit or allow charging depending on the battery temperature.
It is recommended to design the case of the device where you plan to install PS4IoT_V1 so that the bottom edge of the PS4IoT module board touches one of the outer sides of the case, as shown in the pictures. In that case
can be used to organize a convenient interface to control the entire device through the user-provided mounting holes in the housing.
Attention! Use quality batteries to obtain the declared technical characteristics of the product.
Attention! Use quality AC/DC adapters with appropriate cables capable of withstanding 5 volts with a load of up to 2 amps.
Attention! Maximum permissible load current:
! The maximum total load on the charger and outputs is up to 5 Watts.
Note: In this version, these connectors are soldered to the board and are ready to use with the appropriate cables.
Attention!. AC/DC adapter(s), battery pack, solar panel, and temperature sensor are not included.
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