TIDA-00720 Reference Design

Texas Instruments

Power Cycling Reference Design to Extend Battery Life Using an Ultra-Low IQ LDO and Nano Timer

Description

The TIDA-00720 reference design shows a method to extend battery life by power cycling. The power cycling concept consist in time interval period that enables the power management devices for just enough time for the microcontroller to execute the program: transmit data or collect data. Some of the MCUs have sleep modes with low stand-by currents: but the power management devices will continue to dissipate power if they are left enabled. The current leakage is higher during the enabled mode and will add up to the total power waste during the MCU sleep cycles.This design is ideal for systems that operate for various years without replacing the battery; these systems do not need to run constantly instead they operate in periodic intervals of seconds: minutes or even an hour in between operating time.

Features
  • Prolonged battery life by using power cycling. Sleep mode has an ultra-low quiescent (typically 44nA).Time intervals can be adjusted from 10ms to 2h with an external resistor.Ultra-low noise and ripple free 1.8V output voltageFast power-up voltage supply. Power supply is disabled as soon as the MCU sends a process completion signal.Cost efficient solution with only a few compensation componentsTIDA-00720 provides a design guide and design files of the power management solution.
Applications
  • Wireless environmental sensor
  • Glass break detector
  • Process analytics
  • Door & window sensor
Product Categories
  • Power management

Parts

Part Number Name Companion Part
LP38693 LP38693 Buy Datasheet

Bill Of Materials

Download the bill of materials for TIDA-00720 Download

Schematic

Quickly understand overall system functionality.

Download the schematic for TIDA-00720

Test Data

Get results faster with test and simulation data that's been verified.

Download the test file for TIDA-00720

Other Documents

Title Updated Type Size (KB)
TIDA-00720 Gerber 14 Oct 2015 ZIP 1224
TIDA-00720 PCB 14 Oct 2015 PDF 476
TIDA-00720 BOM 14 Oct 2015 PDF 207
TIDA-00720 Schematic 14 Oct 2015 PDF 190