Original Variant¶
The original version of the SuperPower Board consists of an ESP32 as microcontroller and it tries to fulfill most of the requirements. We tried to find the best components to fit the requirements with ultra low power.
Schematics
Top View
Charging Module
Charger IO
RTC cut-off
Regulator
Battery and Protection
MCU
BOM¶
Component |
Description |
Datasheet |
|
|---|---|---|---|
1 |
LM3671 |
2-MHz, 600-mA Step-Down DC-DC Converter |
|
2 |
TPS61032 |
96% Efficient Synchronous Boost Converter With 4A Switch |
|
3 |
LTC4162-L |
35V/3.2A Multicell Lithium-Ion Step-Down Battery Charger with PowerPath and I2C Telemetry |
|
4 |
RV-3028-C7 |
Extreme Low Power RTC Module 45nA@3V |
|
5 |
AP9211 |
Single chip protection solution specially designed for 1-cell Li+ |
|
6 |
CP2102N |
highly-integrated USB-to-UART bridge controller |
|
7 |
MCP23009 |
8-Bit I2C I/O Expander with Open-Drain Output |