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Evaluation Board for SPV1050 ULP Energy Harvester and Battery Charger - Buck-Boost Configuration
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The STEVAL-ISV020V1 is an evaluation board based on the ultralow power energy harvester and battery charger SPV1050. For any detail related to the SPV1050 features and performances please refer to the datasheet.

The evaluation board implements the buck-boost configuration of the DC-DC converter and has the purpose of enhancing the SPV1050 based applications development by testing the silicon performance thanks to many jumpers and test points, and by helping to find out the best system configuration to make the SPV1050 device working at the most of efficiency.

The STEVAL-ISV020V1 board is optimized to:

Harvest energy from PV panels supplying 2.6 V ≤ VMP≤ 9 V and 10 μA ≤ IMP≤ 20 mA.

Charge a battery with the 3.7 V undervoltage protection threshold (VUVP) and 4.2 V end of charge voltage threshold (VEOC).

Nevertheless, few easy changes on the application components (input and output resistor partitioning, CINcapacitor) allow to use a different PV panel and source (like TEG), and battery, by setting the VMPP_SET, the VUVPand the VEOCthresholds according to the source and load. More in detail, operating ranges can be extended as follows: VMPfrom 150 mV up to 18 V, IMPup to 100 mA, VUVPdown to 2.2 V and VEOCup to 5.3 V.

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Data Brief

Key Features

  • First startup at Vin = 2.6 V
  • Input voltage working range: 150 mV ≤ Vin ≤ 18 V
  • End of charge battery voltage: VEOC= 4.25 V
  • Battery undervoltage protection: VUVP= 3.7 V


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB2134: Evaluation board for SPV1050 ULP energy harvester and battery charger – buck-boost configuration
2.0 322 KB

Application Notes

Description Version Size
AN4397: Evaluation board for SPV1050 ULP harvester (buck-boost architecture)
1.0 592 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ISV020V1 gerber files
1.0 84 KB

Bill of Materials

Description Version Size
2.0 116 KB

Schematic Pack

Description Version Size
STEVAL-ISV020V1 schematics
2.0 58 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISV020V1ActiveSPV1050Buy Direct39.2Distributor reported inventory date: 2016-02-08
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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