Overview
Description
The RTKA489108DE0000BU evaluation board evaluates the performance of the RAA489108 buck-boost Narrow Output Voltage DC (NVDC) charger.
The RAA489108 is a buck-boost NVDC charger that uses Renesas' advanced R3™ Technology to provide high light-load efficiency, fast transient response, and seamless DCM/CCM transitions for a variety of mobile and industrial applications.
In charge mode, the RAA489108 takes input power from a wide range (3.9V to 30V) of DC power sources (such as conventional AC/DC charger adapters, USB PD ports, and travel adapters) and safely charges battery packs with up to four cells in a series configuration.
The RAA489108 provides serial communication with SMBus/I2C that allows for the programming of critical parameters to deliver a customized solution. The programmable parameters include (but are not limited to) the following: adapter current limit, charger current limit, system voltage setting, and trickle charging current limit.
Features
- Buck-boost NVDC charger for 2-, 3-, 4-cell Li-ion batteries
- Autonomous charging option (automatic completion of charging)
- Pass-through mode in forward direction
- System power monitor PSYS output, IMVP-8 compliant
- PROCHOT# open-drain output, IMVP-8 compliant
- Allows trickle charging of depleted battery
- Adapter current and battery current monitor (AMON/BMON)
- PROCHOT# open-drain output, IMVP compliant
- Ideal diode control in turbo mode
- Two-level adapter current limit available
- Battery ship mode option
- SMBus and auto-increment I2C compatible
Applications
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