BQ24740EVM for Multicell Synchronous Notebook Charger Status: ACTIVE

Product Information

Description

The bq24740 evaluation module is a complete charger module for evaluating a multi-cell synchronous notebook charge and path selection solution using the bq24740 devices. It is designed to deliver up to 6 A of charge current to Li-ion or Li-polymer applications. The charge current is programmable by external voltage input. The bq24740 has a highly integrated battery charge controller designed to work with external host commands. The battery voltage, charge current, input current limit, and other system parameters are pin programmable. The dynamic power management (DPM) function modifies the charge current depending on system load conditions, avoiding ac adapter overload. High-accuracy current sense amplifiers enable accurate measurement of the ac adapter current, allowing monitoring of overall system power.

Features

• Evaluation module for bq24740
• High-efficiency NMOS-NMOS synchronous buck charger with 300 kHz frequency
• Battery/adapter to system power selector function
• User-selectable 2-cell, 3-cell, or 4-cell Li-ion battery voltage
• User-programmable battery regulation voltage with external voltage source (4.2 V/cell by default)
• User-programmable charge current with external voltage source (3 A by default)
• User-programmable input current limit with external voltage source (4.5 A by default)
• Pin-programmable interface for control and status communications with host
• AC adapter operating range 18 V to 22 V
• LED indication for control and status signals
• Test points for key signals available for testing purpose. Easy probe hook-up
• Jumpers available. Easy to change connections