STEVAL-ISV006V2: Solar Charger up to a 5W Cell

Summary

The SPV1040 is a high efficiency, low power and low voltage DC-DC converter that provides a single output voltage up to 5.2 V. Startup is guaranteed at 0.3 V and the device operates down to 0.45 V when coming out from MPPT mode. It is a 100 kHz fixed frequency PWM step-up (or boost) converter able to maximize the energy generated by few solar cells (polycrystalline or amorphous). The duty cycle is controlled by an embedded unit running an MPPT algorithm with the goal of maximizing the power generated from the panel by continuously tracking its output voltage and current.

The SPV1040 guarantees the safety of overall application and of converter itself by stopping the PWM switching in the case of an overcurrent or overtemperature condition.

The IC integrates a 120 mΩ N-channel MOSFET power switch and a 140 mΩ P-channel MOSFET synchronous rectifier.

Specifications

Manufacturer	STMicroelectronics
Category	Energy Harvesting
Sub-Category	Solar Battery Chargers
Eval Board Part Number	497-11286-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
Application / Target Market	Audio: MP3 Players Cell Phones Digital Cameras Medical Portable Devices RF / Wireless RF: Metering RF: Remote Controls RF: Wireless Sensor
Voltage In	0.3 ~ 5.5 V
Cell Type	Nickel Metal Hydride, NiMH Super-Capacitor
Voltage Out	1.25 ~ 5.2 V
Current Out	1 A
Features	Over Current Protection Reverse Polarity Protection Shutdown, Enable, Standby Soft Start Status Indication Thermal Protection
Component Count + Extras	28 + 0
Design Author	STMicroelectronics
Main I.C. Base Part	SPV1040
Input Power	5 W
Current In	1.5 A
Battery Capacity
Date Created By Author
Date Added To Library	2012-01