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Smart Solar Battery Charger

Overview

Description

Using the green energy of solar to charge a battery is a very popular application. Solar cells produce a challenge, however, due to the wide variability of the output voltage depending upon the amount of solar energy directed at the panel, temperature and the load on the panel. This solution helps overcome these challenges while protecting and maximizing battery life.

System Benefits:

  • MPPT Algorithm maximizes power usage from solar panel
  • Buck-boost architecture charges the battery even when the solar panel's voltage is below the battery voltage
  • Programmable charge rates to support various modes such as fast-charge and trickle-charge
  • Up to 60V input and adjustable output voltage of 0.8V to 60V
  • Monitors battery status and protects the battery from damage caused by over-charging

Comparison

Applications

  • Dock-side charger for boating
  • Battery maintenance/trickle charge
  • Charging at any remote location without AC power

Winning Combinations Interactive Diagram

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4:3 ratio Sheet.583 Sheet.1 Sheet.2 Sheet.3 Sheet.4 US011 US011 US011 DC/DC BUCK DC/DC Buck DC/DC Buck Sheet.398 Sheet.374 Sheet.379 Sheet.380 Sheet.381 Sheet.382 Sheet.383 Sheet.384 Sheet.385 Sheet.387 Ground (earth) Sheet.391 Sheet.392 Sheet.393 Sheet.394 Antenna Array Sheet.403 Sheet.404 Sheet.405 Sheet.406 Sheet.407 Sheet.408 Sheet.409 Sheet.410 Sheet.411 Sheet.412 Sheet.413 Sheet.414 Sheet.415 Sheet.416 Sheet.417 Sheet.418 Sheet.419 Sheet.420 Resistor - Fixed Resistor - Fixed.422 OPTIONAL: Recommended for VIN above 36V on the ISL81601 to improve efficiency and minimize the thermal dissipation on the internal LDO. OPTIONAL: Recommended for VIN above 36V on the ISL81601 to im... OPTIONAL: Recommended for VIN above 36V on the ISL81601 to improve efficiency and minimize the thermal dissipation on the internal LDO. 4.5 to 60V 4.5 to 60V 4.5 to 60V CH ON CH ON CH ON Sheet.509 Sheet.425 Sheet.426 Sheet.427 Sheet.428 Sheet.429 Sheet.430 Sheet.431 Sheet.432 Sheet.433 Sheet.434 Line.435 Left arrow.436 Line.437 Sheet.438 Connector 1.439 Connector 1.440 Sheet.441 Sheet.525 Connector 1.156 Sheet.527 Sheet.528 Sheet.529 Sheet.530 Sheet.531 Connector 1.156.532 Connector 1.156.533 Connector 1.156.534 Sheet.535 Sheet.536 Resistor Divider Resistor Divider Resistor Divider Connector 1.156.538 8-12V 8-12V 8-12V Sheet.540 Sheet.541 Sheet.542 Sheet.543 Sheet.544 Sheet.545 Sheet.546 Sheet.570 Sheet.571 5.0V 5.0V 5.0V Sheet.574 Sheet.576 Sheet.577 CH_ON CH_ON CH_ON Sheet.579 Sheet.580 Sheet.581 Sheet.582 Sheet.584 Sheet.585 Sheet.586 Resistor - Fixed.587 Connector 1.156.589 Connector 1.156.590 5.0V 5.0V 5.0V Sheet.593 Sheet.594 Sheet.595 Resistor Divider Resistor Divider Resistor Divider Connector 1.156.597 Resistor - Fixed.598 Sheet.603 Connector 1.604 Sheet.605 Sheet.606 Gate Circuit Gate Circuit Gate Circuit Sheet.636 Sheet.637 Connector 1.639 *Cell balancing and safety built into Li-Ion Battery; Only algorithm changes. *Cell balancing and safety built into Li-Ion Battery; Only al... *Cell balancing and safety built into Li-Ion Battery; Only algorithm changes. Ground (earth) Sheet.628 Sheet.629 Sheet.630 Sheet.631 MOSFET MOSFET MOSFET MOSFET Sheet.206 Sheet.207 Sheet.208 Sheet.209 Sheet.210 Sheet.211 Sheet.212 Sheet.213 Sheet.214 Sheet.215 Sheet.216 Sheet.217 Line.308 Line.311 Left arrow.312 Line.313 Sheet.222 Sheet.223 Sheet.224 Sheet.225 Sheet.226 Sheet.227 Sheet.228 Sheet.229 Sheet.230 Sheet.231 Sheet.232 Sheet.233 Sheet.234 Line.308 Line.311 Left arrow.312 Line.313 Sheet.239 Sheet.242 Sheet.243 Sheet.244 Sheet.245 Sheet.246 Sheet.247 Sheet.248 Sheet.249 Sheet.250 Sheet.251 Sheet.252 Sheet.253 Line.308 Line.311 Left arrow.312 Line.313 Sheet.258 Sheet.259 Sheet.260 Sheet.261 Sheet.262 Sheet.263 Sheet.264 Sheet.265 Sheet.266 Sheet.267 Sheet.268 Sheet.269 Sheet.270 Line.308 Line.311 Left arrow.312 Line.313 Sheet.275 Sheet.276 Sheet.278 Sheet.279 Q1 Q1 Q1 Q2 Q2 Q2 Q3 Q3 Q3 Q4 Q4 Q4 Sheet.588 Op Amp Op Amp Op Amp OpAmp Op Amp Op Amp Op-Amp Op Amp Op Amp MCU MCU MCU MCU ADC ADC ADC PWM PWM PWM PWM PWM PWM ADC ADC ADC PWM PWM PWM ADC/CMP ADC/CMP ADC/CMP GPIO GPIO GPIO VDD VDD VDD ADC/CMP ADC/CMP ADC/CMP Buck/Boost Buck/Boost Controller Buck/Boost Controller Buck/Boost Controller VIN VIN VIN EXTBIAS EXTBIAS EXTBIAS IMON_OUT IMON_OUT IMON_OUT VCC5V VCC5V VCC5V ISEN+/- ISEN+/- ISEN+/- CS+/- CS+/- CS+/- VOUT VOUT VOUT FB_OUT FB_OUT FB_OUT FB_IN FB_IN FB_IN IMON_OUT IMON_OUT IMON_OUT Non-Renesas Component Battery Lead Acid / Li-Ion* Battery Lead Acid / Li-Ion* Sheet.893 Sheet.894 Sheet.895 Sheet.896 Sheet.897 Sheet.898 Sheet.899 Sheet.900 Sheet.901 Sheet.902 Sheet.903 Sheet.904 Sheet.905 Sheet.906 Sheet.907 Connect.46 Sheet.909 Sheet.910
Exiting Interactive Block Diagram