ISL9238EVAL1Z

ISL9238 buck-boost charger evaluation board designed to demonstrate the performance of the ISL9238. The buck-boost Narrow Output Voltage DC (NVDC) charger utilizing 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. It provides all circuits that are required to evaluate the features of the ISL9238. A majority of the features of the ISL9238, such as adjustable output voltage, On-the-Go (OTG) mode, Trickle Charging mode for depleted battery and system power monitor at buck, Boost and Buck-Boost modes are available on this evaluation board. 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, values also can be set by SMBus.

• 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
• SMBus and auto-increment I2C compatible