Unseen Beauty

Power Management System For Mobile Application

This was designed for an IOT application with more advanced features. A battery cell can be attached to the circuit. The supported cell chemistry of the system is Li +. Battery cell capacity can be measured using a fuel gauge and it has an I2C interface that can be read using MCU or SOC.

The POWER ON RESET is a key feature of this system. It prevents malfunctioning MCU or SOC.
Active power path management is used in these circuits (BQ24195)

The schematic of the Power Managements circuit is shown below.

Schematic Design

Tool: Altium Designer

Technical Specs:

1. Current Rating: 2A
2. POR.
3. I2C (To measure cell capacity).
4. Voltage output: 3.3V and 1.8V (constant) .
5. Active Power Path Management.
6. Input voltage: 5V

Example Layout (Altium Designer)