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DC2044A

ADIDC2044A

Analog Devices Inc.
LTC4020 - Battery Charger Power Management Evaluation Board

Overview

The DC2044A is a high-voltage demonstration board featuring the LTC4020, a buck-boost multi-chemistry battery charger with PowerPath management. It provides a complete power solution for charging batteries from a wide range of input voltages, even when the input is higher, lower, or equal to the battery voltage. The board is designed to handle various chemistries including Li-Ion, LiFePO4, and Lead-Acid.

Why Choose This Part

The LTC4020-based design eliminates the need for multiple converters by providing seamless transition between buck and boost modes. It features a proprietary PowerPath topology that prioritizes power to the system load while managing battery charging independently. The board supports precise charge current and voltage regulation with a wide 4.5V to 55V input range.

Applications

Industrial Handheld Instruments
Provides reliable charging and power management for portable diagnostic tools that operate across wide input voltage ranges.
Solar Powered Systems
Utilizes the buck-boost architecture to manage fluctuating solar panel outputs for efficient battery charging.
Automotive Emergency Power
Manages charging of backup battery packs from automotive rails that experience significant voltage swings.
High-Power Mobile Equipment
Supports high-current charging requirements for large multi-cell battery packs in mobile workstations.

Key Specifications

Type Power Management
Contents Board(s)
Function Battery Charger
Utilized IC / Part LTC4020

Getting Started

To evaluate the LTC4020, connect a power supply to the VIN and GND terminals and the battery pack to the VBAT and GND terminals. Ensure the onboard jumpers are configured for the target battery chemistry and float voltage as specified in the DC2044A manual. Use an oscilloscope to monitor the switching waveforms and PowerPath transition during varying load conditions.