SPV1050

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Ultra low power energy harvester and battery charger with embedded MPPT and LDOs

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Product overview

Description

The SPV1050 is an ultra-low power and high-efficiency power manager embedding four MOSFETs for boost or buck-boost DC-DC converter and an additional transistor for the load connection/disconnection. An internal high accuracy MPPT algorithm can be used to maximize the power extracted from PV panel or TEG. The internal logic works to guarantee tight monitoring of both the end-of-charge voltage (VEOC) and the minimum battery voltage (VUVP) by opening the pass-transistor at triggering of the VEOC threshold or at triggering of the VUVP threshold to preserve the battery life. Both the VEOC and VUVP thresholds can be trimmed by external resistors connected between the STORE rail and the EOC and UVP pins, respectively. In boost configuration (CONF pin connected to the supply source), the IC requires 550 mV and 30 μA to Cold start; while after the first start-up the input voltage can range between 150 mV and VEOC. In buck-boost configuration (CONF pin connected to ground), the IC requires 2.6 V and 5 μA at Cold start; while after the first start-up input voltage can range between 150 mV up to 18 V. The STORE pin is available as unregulated voltage output (e.g. to supply by external LDO a micro-controller), while two fully independent LDOs (1.8 V and 3.3 V) are embedded for powering other companion ICs like MCU, sensors or RF transceivers. Both LDOs can be independently enabled through the related pins.

  • All features

    • Transformerless thermoelectric generators and PV modules energy harvester  
    • High efficiency for any harvesting source
    • Up to 70 mA output current
    • Fully integrated MOSFETs for Boost or Buck-boost configurations
    • Selectable enable/disable MPPT functionality
    • Programmable MPPT by external resistors
    • 2.6 V to 5.3 V trimmable output overvoltage level (± 1% accuracy)
    • 2.2 V to 3.6 V trimmable output undervoltage level (± 1% accuracy)
    • Two fully independent LDOs (1.8 V and 3.3 V output)
    • Enable/disable LDO pins
    • Load disconnect function (by-pass transistor open) prior the first start-up (Cold Start) to avoid battery lifetime shortening
    • Battery Connected and DC-DC switching open drain indication pins

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STMicroelectronics - SPV1050

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
SPV1050-WST
Preview
TESTED USWF Industrial N/A
SPV1050TTR
Active
VFQFPN 20 3x3 Industrial Ecopack2

SPV1050-WST

Package:

TESTED USWF

Material Declaration**:

Marketing Status

Preview

Package

TESTED USWF

Grade

Industrial

RoHS Compliance Grade

N/A

SPV1050TTR

Package:

VFQFPN 20 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 20 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com 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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SPV1050-WST Preview

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Part Number:

SPV1050-WST

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors