Solar charge controller

Products and reference designs

Solar charge controller

Block diagram

Overview

Our integrated circuits and reference designs help you create smarter and more efficient solar charge controllers, effectively converting power from a solar system with MPPT, safely charging various battery chemistry types and accurately controlling power flow.

Design requirements

Solar charge controller designs often require:

  • Accurate measurement of voltage, current and temperature.
  • Compatibility with various solar panels and battery types.
  • High efficiency and power density.

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Block diagram

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Solar charge controller

Solar Panel Input Solar PanelInput Load Output LoadOutput Output Enable Power Stage Output Enable Power Stage MOSFET MOSFET Gate Driver Gate Driver MPPT/Charger Digital Controller MPPT/Charger Digital Controller MCU MCU Environmental Monitor Environmental Monitor Temp Sensor Temp Sensor User Interface User Interface Keypad Keypad LCD LCD LEDs LEDs Wired Interface Wired Interface USB USB RS-485 RS-485 RS-232 RS-232 Non-Isolated DC/DC Converter Non-Isolated DC/DC Converter Wide Vin Buck Wide Vin Buck Input Enable Power Stage Input Enable Power Stage MOSFET MOSFET Gate Driver Gate Driver Battery Input Protection Battery Input Protection Protection Controller Protection Controller MOSFET MOSFET Charge Current and Voltage Sense Charge Current and Voltage Sense Current Sensor Current Sensor AMP AMP AMP AMP MPPT Power Stage MPPT Power Stage Power FET/IGBT Power FET/IGBT Gate Drivers Gate Drivers Input Current and Voltage Sense Input Current and Voltage Sense Current Sensor Current Sensor AMP AMP AMP AMP Output Current Sense Output Current Sense Current Sensor Current Sensor AMP AMP

Technical documentation

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Type Title Date
Technical article A bite-size gate drive: replacing BJTs with an integrated solution PDF | HTML 29 Jun 2023
White paper Impact of an isolated gate driver (Rev. A) 28 Feb 2019
Application brief How GaN Improves Solar Charge Controllers PDF | HTML 26 Jun 2024
Application note Digitally Controlled HV Solar MPPT DC-DC Converter Using C2000 Piccolo MCU 23 Feb 2015
Application brief Low-Side Gate Drivers With UVLO Versus BJT Totem-Pole 20 Mar 2019
White paper Demystifying high-voltage power electronics for solar inverters 18 Jun 2018
Application note Using a Single-Output Gate-Driver for High-Side or Low-Side Drive (Rev. B) PDF | HTML 08 Sep 2023
Application brief Understanding Peak IOH and IOL Currents (Rev. A) 01 Apr 2020

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