Overview
Description
The ISL9238EVAL1Z evaluation board is designed to demonstrate the performance of the ISL9238 buck-boost Narrow Output Voltage DC (NVDC) charger. The default value numbers of the battery in series, the switching frequency, and the adapter current limit charging function can be programmed by the resistor from the PROG pin to GND. Those values can also be set by SMBus.
The ISL9238EVAL1Z showcases the ISL9238's buck-boost NVDC charging capabilities, including support for up to 4-cell battery charging from a wide 4V to 20V input range, Renesas R3™ Technology for high light-load efficiency, fast transient response, and seamless DCM/CCM transitions. It also supports On-the-Go (OTG) operation for 2- and 4-cell battery applications and SMBus/I²C programmability for configuring key charging and system parameters, such as current limits, system voltage settings, and more.
Features
- Buck-boost NVDC charger for 1-, 2-, 3-, 4-cell Li-ion batteries
- End of Charge (EOC) option
- System power monitor PSYS output, IMVP-8 compliant
- PROCHOT# open-drain output, IMVP-8 compliant
- Allows trickle charging of depleted battery
- Optional ASGATE FET control
- Ideal diode control in turbo mode
- Reverse buck, boost, and buck-boost operation from battery
- Two-level adapter current limit available
- Battery ship mode option
- SMBus and auto-increment I²C compatible
Applications
Design & Development
Software & Tools
Software Downloads
Videos & Training
Learn how to set up the ISL9237 evaluation board and connect the EVB to the GUI interface. Add an electrical load and measure output voltage and phase voltages without the need for a Li-Ion battery or emulator.
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