A Highly Efficient Solar Lantern by Texas Instruments

A Highly Efficient Solar Lantern Block Diagram

TI had designed solar lantern solution specifically for Indian rural market with circuit protections, more shelf life, user control interface with dimming feature and the most important thing, very high power efficiency providing great backup time.

Key Solution Features:  

Boost Drive Stage for 3W (3 LEDs in Series)

Stand-by current < 500uAReverse

Polarity protection for Battery and Panel

4 Stage Charging profile for Battery

User interface in form of Keys and Indication LEDs

Under-voltage Cutoff

TI Hero Products in this Solution

MSP430G2231

TLV70433

TPS61165

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Article by

Dept. of ECE

Jaya Prakash Narayan College of Engineering

Jaya Prakash Narayan College of Engineering