Power Supply Reference Design for GPRS Modems using LiSoCL2 Batteries

(ACTIVE) TIDA-01387

Description & Features

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Key Document

Description

This design demonstrates how to power GPRS modems in smart meters using LiSoCL2 batteries. GPRS modems require peak current of up to 2A during transmission. This design reduces the peak load requirements on the battery by using the TPS61021A boost converter and a 20F super capacitor to provide the required transmit current. This reduces the overall cost of the system by allowing the use of lower cost LiCoCL2 batteries while maintaining a 10-year lifetime.

Features
  • 0.7V to 4V input voltage range
  • Small boost converter solution
  • Efficiency is higher than 85% with 3V input voltage
  • More than 2A output current capability with 2.8V input
  • Ouput voltage dip less than 200mV

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Schematic/Block Diagram

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Test Data

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Design Files

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Parametrics
 TIDA-01387
(Output Voltage 1)
Vin (Min) (V).7
Vin (Max) (V)4
Vout (Nom) (V)4
Iout (Max) (A)2
Output Power (W)8
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBoost- Synchronous
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Part Number Status Vin  (Min)  (V)   Vin  (Max)  (V)   Vout  (Nom)  (V)   Iout  (Max)  (A)   Output Power  (W)   Isolated/Non-Isolated   Input Type   Topology  

TIDA-01387:
Power Supply Reference Design for GPRS Modems using LiSoCL2 Batteries

ACTIVE .7   4   4   2   8   Non-Isolated   DC   Boost- Synchronous  

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS61021A  3-A Boost Converter with 0.5-V Ultra Low Input Voltage   Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS61021A 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
PDF 603 27 Apr 2017
Design files (6)
Title Abstract Type Size (KB) Date
ZIP 325 26 Apr 2017
ZIP 1306 26 Apr 2017
PDF 314 26 Apr 2017
PDF 55 26 Apr 2017
PDF 160 26 Apr 2017
PDF 174 26 Apr 2017

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