LP5910 and TPS61221 as Power Reference Design for devices Interacting with Ultra-Low Voltage MSP430

(ACTIVE) TIDA-00599

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Key Document

Description

The MSP430X09X can operate form ultra-low voltages (ULV) in the range of 0.9V to 1.65V; however most of the devices in the system requires higher voltages. TIDA-00599 provides a solution for those companion devices that requires 1.8V and 3.3V input voltages.

A 3.3V voltage rail is generated from a 0.9V to 1.65 V batteries using the TPS61221 boost converter and a 1.8V voltage rail is generated using a high PSRR LDO (LP5910) connected in series with the boost converter output voltage rail. The combine output current is 100 mA at 1.65V input voltage and 50 mA at 0.90 V input voltage.

This power solution is deal to power sensors and peripherals from the same ultra-low voltage source powering the MSP430 family line.

Features
  • Power management for devices interacting with the ultra-low voltage µController family (MSP430X09X) from a 0.9 V to 1.65 V single battery cell
  • Generates 1.8V and 3.3V voltage rails from an ultra-low voltage source
  • Combine output current
    • 50mA at 0.9V input voltage
    • 100mA at 1.65V input voltage
  • Ripple free and low noise 1.8 V voltage rail
  • Small solution size, with minimum compensation components
  • Cost efficient solution
  • TIDA-00599 provides design guide and design files of the power management solution

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Bill of Materials (BOM)

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LP5910  300mA Low-Noise Low-IQ LDO  Power management  Sample & Buy View Design Kits & Evaluation Modules
MSP430L092  MSP430L092 Mixed Signal Microcontroller  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
TPS61221  Tiny Low Input Voltage Boost Converter  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LP5910 Download -
Download Download
MSP430L092 Download Download
TPS61221 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1224 23 Jun 2015 0
Design files (4)
Title Abstract Type Size (KB) Date Views
ZIP 1625 01 Oct 2015 0
PDF 442 01 Oct 2015 0
PDF 205 01 Oct 2015 0
PDF 114 01 Oct 2015 0

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