STEVAL-ISV005V2: MPPT Solar Battery Charger

Summary

For photovoltaic standalone installations, both battery charging management and an efficient solar energy harvesting system are required.

The lead acid battery charging control (which is a key feature, in terms of costs, in off-grid PV installations) must optimize both the charging time and the lifetime of the battery.

To optimize the energy extraction, the solar energy harvesting system needs a power conversion unit which performs an MPPT (max. power point tracking) algorithm.

The STEVAL-ISV005V2 is a demonstration board for users designing an MPPT-based lead acid battery charger using the SPV1020, which is a high efficiency, monolithic, step-up converter, with interleaved topology (IL4) and implementing MPPT.

In addition to the SPV1020, and to prevent battery overvoltage and overcurrent, the STEVAL-ISV005V2 system architecture proposes a solution with the SEA05 (CC-CV: constant current-constant voltage) IC.

Specifications

Manufacturer	STMicroelectronics
Category	Energy Harvesting
Sub-Category	Solar Battery Chargers
Eval Board Part Number	497-11764-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
Application / Target Market	Lighting: LED Solar Streetlight Solar Powered Back-up Traffic Lights
Voltage In	<= Min Battery Voltage
Cell Type	Lead Acid
Voltage Out	24 V
Current Out	1 A
Features	Over Charge Protection Over Current Protection Over Discharge Protection Over Voltage Protection Thermal Protection
Component Count + Extras	42 + 4
Design Author	STMicroelectronics
Main I.C. Base Part	SEA05 SPV1020
Input Power
Current In
Battery Capacity	4 Ah
Date Created By Author	2012-01
Date Added To Library	2012-02